X-Git-Url: https://pd.if.org/git/?p=pdclib;a=blobdiff_plain;f=functions%2Fstdio%2Ffscanf.c;h=da64a9d74e39b655d8e6715c51b81a677f155c88;hp=17b0dca4c9add00de4e45f667628696d137f3c5e;hb=5522316811fdce2216c4d1320af68dd54909aed5;hpb=0c316ee3b4dc0712797877f5dc0f4a789646154d

diff --git a/functions/stdio/fscanf.c b/functions/stdio/fscanf.c
index 17b0dca..da64a9d 100644
--- a/functions/stdio/fscanf.c
+++ b/functions/stdio/fscanf.c
@@ -27,7 +27,2008 @@ int fscanf( FILE * _PDCLIB_restrict stream, const char * _PDCLIB_restrict format
 #include <_PDCLIB_test.h>
 
 #include <string.h>
+#include <limits.h>
+#include <_PDCLIB_aux.h>
 
+#if 0
+#define CHECK_TRUE( a ) do { if ( a == 0 ) { fprintf( stderr, "Unexpected failure in " _PDCLIB_symbol2string( __LINE__ ) ": '" #a "' evaluated to false.\n" ); } } while ( 0 )
+#define CHECK_FALSE( a ) do { if ( a != 0 ) { fprintf( stderr, "Unexpected failure in " _PDCLIB_symbol2string( __LINE__ ) ": '" #a "' evaluated to true.\n" ); } } while ( 0 )
+#define CHECK_EQUAL( a, b ) do { int x = a; int y = b; if ( x != y ) { fprintf( stderr, "Mismatch in " _PDCLIB_symbol2string( __LINE__ ) ": result is %d, expected %d.\n", x, y ); } } while ( 0 )
+#define CHECK_FEQUAL( a, b, T, F ) do { T x = a; T y = b; if ( x != y ) { fprintf( stderr, "Mismatch in " _PDCLIB_symbol2string( __LINE__ ) ": result is " F ", expected " F ".\n", x, y ); } } while ( 0 )
+#endif
+
+#define CHECK_TRUE( a ) TESTCASE( a != 0 )
+#define CHECK_FALSE( a ) TESTCASE( a == 0 )
+#define CHECK_EQUAL( a, b ) do { int x = a; int y = b; TESTCASE( x == y ); } while ( 0 )
+#define CHECK_FEQUAL( a, b, T, F ) do { T x = a; T y = b; TESTCASE( x == y ); } while ( 0 )
+
+// literal matches, character matches, and basic integer matches
+void suite_one( void );
+// decimal integer matches
+void suite_two( void );
+// hexadecimal integer matches
+void suite_three( void );
+// octal integer matches
+void suite_four( void );
+// string matches
+void suite_five( void );
+
+int main()
+{
+    suite_one();
+    suite_two();
+    suite_three();
+    suite_four();
+    suite_five();
+}
+
+// literal matches, character matches, and basic integer matches
+void suite_one()
+{
+    FILE * file;
+    if ( ( file = fopen( "tmpfile", "wb+" ) ) == NULL )
+    {
+        puts( "Failed to open tmpfile for writing." );
+        return;
+    }
+    fprintf( file, "1234567890" );
+    fprintf( file, "1%c3-5+7%c9%c", 0, 0, -1 );
+    fprintf( file, "2 4 6 8 0%c", 255 );
+    fprintf( file, "1 \011 5%%%%  0" );
+    CHECK_EQUAL( ftell( file ), 40 );
+
+    // -----------------------------------------------------------------------
+    // Literal matching
+    // -----------------------------------------------------------------------
+    {
+    // matching six characters literally
+    // checking via %n
+    // should report six characters read
+    fseek( file, 0, SEEK_SET );
+    int n;
+    CHECK_EQUAL( fscanf( file, "123456%n", &n ), 0 );
+    CHECK_EQUAL( n, 6 );
+    CHECK_EQUAL( ftell( file ), 6 );
+    }
+    {
+    // matching a character, three whitespace chars, and another character
+    // checking via %n
+    // should report five characters read
+    fseek( file, 30, SEEK_SET );
+    int n;
+    CHECK_EQUAL( fscanf( file, "1 5%n", &n ), 0 );
+    CHECK_EQUAL( n, 5 );
+    CHECK_EQUAL( ftell( file ), 35 );
+    }
+    {
+    // matching three characters, not matching whitespaces, and matching another three characters
+    // checking via %n
+    // should report six characters matched
+    fseek( file, 0, SEEK_SET );
+    int n;
+    CHECK_EQUAL( fscanf( file, "123  456%n", &n ), 0 );
+    CHECK_EQUAL( n, 6 );
+    CHECK_EQUAL( ftell( file ), 6 );
+    }
+    {
+    // matching a character, two '%' characters, and two whitespaces
+    // checking via %n
+    // should report five characters matched
+    fseek( file, 34, SEEK_SET );
+    int n;
+    CHECK_EQUAL( fscanf( file, "5%%%% %n", &n ), 0 );
+    CHECK_EQUAL( n, 5 );
+    CHECK_EQUAL( ftell( file ), 39 );
+    }
+    {
+    // seeking to last character in file, trying to match that char and a whitespace
+    // checking via %n
+    // should report one character matched and EOF
+    fseek( file, -1, SEEK_END );
+    int n;
+    CHECK_EQUAL( fscanf( file, "0 %n", &n ), 0 );
+    CHECK_EQUAL( n, 1 );
+    CHECK_TRUE( feof( file ) );
+    CHECK_FALSE( ferror( file ) );
+    CHECK_EQUAL( ftell( file ), 40 );
+    }
+    {
+    // seeking to end of file, trying to match a -1
+    // checking via %n
+    // should report error, not executing %n
+    fseek( file, 0, SEEK_END );
+    int n = -1;
+    CHECK_EQUAL( fscanf( file, "\377%n", &n ), -1 );
+    CHECK_EQUAL( n, -1 );
+    CHECK_TRUE( feof( file ) );
+    CHECK_FALSE( ferror( file ) );
+    CHECK_EQUAL( ftell( file ), 40 );
+    }
+
+    // -----------------------------------------------------------------------
+    // Character matching ('%c')
+    // -----------------------------------------------------------------------
+    {
+    // reading a char array of specified width, including zero bytes
+    // should report the characters read, no zero termination of the array
+    fseek( file, 10, SEEK_SET );
+    char buffer[ 8 ];
+    memset( buffer, '\177', 8 );
+    CHECK_EQUAL( fscanf( file, "%7c", buffer ), 1 );
+    CHECK_FALSE( memcmp( buffer, "1\0003-5+7\177", 8 ) );
+    CHECK_EQUAL( ftell( file ), 17 );
+    }
+    {
+    // reading a char array of unspecified width when positioned at -1 value 
+    // should default to width one, read the -1 value, no zero termination of the array
+    fseek( file, 19, SEEK_SET );
+    char buffer[ 2 ];
+    memset( buffer, '\177', 2 );
+    CHECK_EQUAL( fscanf( file, "%c", buffer ), 1 );
+    CHECK_FALSE( memcmp( buffer, "\377\177", 2 ) );
+    CHECK_EQUAL( ftell( file ), 20 );
+    }
+    {
+    // reading a char array of specified width 1 when positioned at (non-space) whitespace
+    // should read the whitespace (literally), no zero termination of the array
+    fseek( file, 32, SEEK_SET );
+    char buffer[ 2 ];
+    memset( buffer, '\177', 2 );
+    CHECK_EQUAL( fscanf( file, "%1c", buffer ), 1 );
+    CHECK_FALSE( memcmp( buffer, "\011\177", 2 ) );
+    CHECK_EQUAL( ftell( file ), 33 );
+    }
+    {
+    // reading a char array of specified width 2 when positioned at last char of file
+    // should read the character, and report EOF
+    fseek( file, -1, SEEK_END );
+    char buffer[ 2 ];
+    memset( buffer, '\177', 2 );
+    CHECK_EQUAL( fscanf( file, "%2c", buffer ), 1 );
+    CHECK_FALSE( memcmp( buffer, "0\177", 2 ) );
+    CHECK_TRUE( feof( file ) );
+    CHECK_FALSE( ferror( file ) );
+    CHECK_EQUAL( ftell( file ), 40 );
+    }
+    {
+    // reading a char array of specified width 1 when positioned at last char of file
+    // should read the character, and NOT report EOF
+    fseek( file, -1, SEEK_END );
+    char buffer[ 2 ];
+    memset( buffer, '\177', 2 );
+    CHECK_EQUAL( fscanf( file, "%1c", buffer ), 1 );
+    CHECK_FALSE( memcmp( buffer, "0\177", 2 ) );
+    CHECK_FALSE( feof( file ) );
+    CHECK_EQUAL( ftell( file ), 40 );
+    }
+    {
+    // reading a char array of specified width 1 when positioned at EOF
+    // should report input error before any conversion (-1)
+    fseek( file, 0, SEEK_END );
+    char buffer[ 2 ];
+    memset( buffer, '\177', 2 );
+    CHECK_EQUAL( fscanf( file, "%1c", buffer ), -1 );
+    CHECK_FALSE( memcmp( buffer, "\177\177", 2 ) );
+    CHECK_TRUE( feof( file ) );
+    CHECK_FALSE( ferror( file ) );
+    CHECK_EQUAL( ftell( file ), 40 );
+    }
+
+    // -----------------------------------------------------------------------
+    // Integer matching ('%d')
+    // -----------------------------------------------------------------------
+    {
+    // reading a whitespace-terminated integer
+    fseek( file, 20, SEEK_SET );
+    int i;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%d%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 2 );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 21 );
+    }
+    {
+    // reading a -1 terminated integer
+    fseek( file, 18, SEEK_SET );
+    int i;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%d%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 9 );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 19 );
+    }
+    {
+    // reading a EOF terminated integer
+    fseek( file, -1, SEEK_END );
+    int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%d%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 40 );
+    }
+    {
+    // trying to read an integer when positioned at whitespace
+    // should skip whitespaces
+    fseek( file, 32, SEEK_SET );
+    int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%d%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 5 );
+    CHECK_EQUAL( n, 3 );
+    CHECK_EQUAL( ftell( file ), 35 );
+    }
+    {
+    // trying to read an integer when positioned at -1 value
+    // should report matching failure
+    fseek( file, 19, SEEK_SET );
+    int i = 0;
+    int n = -1;
+    CHECK_EQUAL( fscanf( file, "%d%n", &i, &n ), 0 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, -1 );
+    CHECK_EQUAL( ftell( file ), 19 );
+    }
+    {
+    // trying to read an integer when positioned at EOF
+    // should report reading failure
+    fseek( file, 0, SEEK_END );
+    int i = 0;
+    int n = -1;
+    CHECK_EQUAL( fscanf( file, "%d%n", &i, &n ), -1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, -1 );
+    CHECK_EQUAL( ftell( file ), 40 );
+    }
+    {
+    // reading a '-'-prefixed integer
+    fseek( file, 13, SEEK_SET );
+    int i;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%d%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, -5 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 15 );
+    }
+    {
+    // reading a '+'-prefixed integer
+    fseek( file, 15, SEEK_SET );
+    int i;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%d%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 7 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 17 ); 
+    }
+
+    fclose( file );
+    remove( "tmpfile" );
+}
+
+// decimal integer matches
+void suite_two()
+{
+    FILE * file;
+    if ( ( file = fopen( "tmpfile", "wb+" ) ) == NULL )
+    {
+        puts( "Failed to open tmpfile for writing." );
+        return;
+    }
+    fprintf( file, "-0 +0 -128 +127 +255 -32768 +32767 +65535\n" );
+    fprintf( file, "-2147483648 +2147483647 +4294967295\n" );
+    fprintf( file, "-9223372036854775808 +9223372036854775807 +18446744073709551615\n" );
+    CHECK_EQUAL( ftell( file ), 142 );
+    {
+    // reading 0, d
+    fseek( file, 1, SEEK_SET );
+    signed char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhd%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading -0, d
+    fseek( file, 0, SEEK_SET );
+    signed char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhd%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading +0, d
+    fseek( file, 3, SEEK_SET );
+    signed char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhd%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 5 );
+    }
+    {
+    // reading -128, d
+    fseek( file, 6, SEEK_SET );
+    signed char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhd%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, -128 );
+    CHECK_EQUAL( n, 4 );
+    CHECK_EQUAL( ftell( file ), 10 );
+    }
+    {
+    // reading 127, d
+    fseek( file, 12, SEEK_SET );
+    signed char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhd%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 127 );
+    CHECK_EQUAL( n, 3 );
+    CHECK_EQUAL( ftell( file ), 15 );
+    }
+    {
+    // reading +127, d
+    fseek( file, 11, SEEK_SET );
+    signed char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhd%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 127 );
+    CHECK_EQUAL( n, 4 );
+    CHECK_EQUAL( ftell( file ), 15 );
+    }
+    {
+    // reading 0, u
+    fseek( file, 1, SEEK_SET );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading -0, u
+    fseek( file, 0, SEEK_SET );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading +0, u
+    fseek( file, 3, SEEK_SET );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 5 );
+    }
+    {
+    // reading 127, u
+    fseek( file, 12, SEEK_SET );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 127 );
+    CHECK_EQUAL( n, 3 );
+    CHECK_EQUAL( ftell( file ), 15 );
+    }
+    {
+    // reading +127, u
+    fseek( file, 11, SEEK_SET );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 127 );
+    CHECK_EQUAL( n, 4 );
+    CHECK_EQUAL( ftell( file ), 15 );
+    }
+    {
+    // reading 255, u
+    fseek( file, 17, SEEK_SET );
+    unsigned char i = 0;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 255 );
+    CHECK_EQUAL( n, 3 );
+    CHECK_EQUAL( ftell( file ), 20 );
+    }
+    {
+    // reading +255, u
+    fseek( file, 16, SEEK_SET );
+    unsigned char i = 0;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 255 );
+    CHECK_EQUAL( n, 4 );
+    CHECK_EQUAL( ftell( file ), 20 );
+    }
+    {
+    // reading 0, i
+    fseek( file, 1, SEEK_SET );
+    signed char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhi%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading -0, i
+    fseek( file, 0, SEEK_SET );
+    signed char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhi%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading +0, i
+    fseek( file, 3, SEEK_SET );
+    signed char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhi%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 5 );
+    }
+    {
+    // reading -128, i
+    fseek( file, 6, SEEK_SET );
+    signed char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhi%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, -128 );
+    CHECK_EQUAL( n, 4 );
+    CHECK_EQUAL( ftell( file ), 10 );
+    }
+    {
+    // reading 127, i
+    fseek( file, 12, SEEK_SET );
+    signed char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhi%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 127 );
+    CHECK_EQUAL( n, 3 );
+    CHECK_EQUAL( ftell( file ), 15 );
+    }
+    {
+    // reading +127, i
+    fseek( file, 11, SEEK_SET );
+    signed char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhi%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 127 );
+    CHECK_EQUAL( n, 4 );
+    CHECK_EQUAL( ftell( file ), 15 );
+    }
+    {
+    // reading 0, d
+    fseek( file, 1, SEEK_SET );
+    signed short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hd%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading -0, d
+    fseek( file, 0, SEEK_SET );
+    signed short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hd%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading +0, d
+    fseek( file, 3, SEEK_SET );
+    signed short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hd%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 5 );
+    }
+    {
+    // reading -32768, d
+    fseek( file, 21, SEEK_SET );
+    signed short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hd%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, -32768 );
+    CHECK_EQUAL( n, 6 );
+    CHECK_EQUAL( ftell( file ), 27 );
+    }
+    {
+    // reading 32767, d
+    fseek( file, 29, SEEK_SET );
+    signed short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hd%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 32767 );
+    CHECK_EQUAL( n, 5 );
+    CHECK_EQUAL( ftell( file ), 34 );
+    }
+    {
+    // reading +32767, d
+    fseek( file, 28, SEEK_SET );
+    signed short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hd%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 32767 );
+    CHECK_EQUAL( n, 6 );
+    CHECK_EQUAL( ftell( file ), 34 );
+    }
+    {
+    // reading 0, u
+    fseek( file, 1, SEEK_SET );
+    unsigned short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading -0, u
+    fseek( file, 0, SEEK_SET );
+    unsigned short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading +0, u
+    fseek( file, 3, SEEK_SET );
+    unsigned short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 5 );
+    }
+    {
+    // reading 32767, u
+    fseek( file, 29, SEEK_SET );
+    unsigned short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 32767 );
+    CHECK_EQUAL( n, 5 );
+    CHECK_EQUAL( ftell( file ), 34 );
+    }
+    {
+    // reading +32767, u
+    fseek( file, 28, SEEK_SET );
+    unsigned short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 32767 );
+    CHECK_EQUAL( n, 6 );
+    CHECK_EQUAL( ftell( file ), 34 );
+    }
+    {
+    // reading 65535, u
+    fseek( file, 36, SEEK_SET );
+    unsigned short i = 0;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 65535 );
+    CHECK_EQUAL( n, 5 );
+    CHECK_EQUAL( ftell( file ), 41 );
+    }
+    {
+    // reading +65535, u
+    fseek( file, 35, SEEK_SET );
+    unsigned short i = 0;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 65535 );
+    CHECK_EQUAL( n, 6 );
+    CHECK_EQUAL( ftell( file ), 41 );
+    }
+    {
+    // reading 0, i
+    fseek( file, 1, SEEK_SET );
+    signed short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hi%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading -0, i
+    fseek( file, 0, SEEK_SET );
+    signed short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hi%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading +0, i
+    fseek( file, 3, SEEK_SET );
+    signed short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hi%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 5 );
+    }
+    {
+    // reading -32768, i
+    fseek( file, 21, SEEK_SET );
+    signed short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hi%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, -32768 );
+    CHECK_EQUAL( n, 6 );
+    CHECK_EQUAL( ftell( file ), 27 );
+    }
+    {
+    // reading 32767, i
+    fseek( file, 29, SEEK_SET );
+    signed short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hi%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 32767 );
+    CHECK_EQUAL( n, 5 );
+    CHECK_EQUAL( ftell( file ), 34 );
+    }
+    {
+    // reading +32767, i
+    fseek( file, 28, SEEK_SET );
+    signed short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hi%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 32767 );
+    CHECK_EQUAL( n, 6 );
+    CHECK_EQUAL( ftell( file ), 34 );
+    }
+    {
+    // reading 0, d
+    fseek( file, 1, SEEK_SET );
+    signed int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%d%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading -0, d
+    fseek( file, 0, SEEK_SET );
+    signed int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%d%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading +0, d
+    fseek( file, 3, SEEK_SET );
+    signed int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%d%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 5 );
+    }
+    {
+    // reading -2147483648, d
+    fseek( file, 42, SEEK_SET );
+    signed int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%d%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, -2147483648 );
+    CHECK_EQUAL( n, 11 );
+    CHECK_EQUAL( ftell( file ), 53 );
+    }
+    {
+    // reading 2147483647, d
+    fseek( file, 55, SEEK_SET );
+    signed int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%d%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 2147483647 );
+    CHECK_EQUAL( n, 10 );
+    CHECK_EQUAL( ftell( file ), 65 );
+    }
+    {
+    // reading +2147483647, d
+    fseek( file, 54, SEEK_SET );
+    signed int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%d%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 2147483647 );
+    CHECK_EQUAL( n, 11 );
+    CHECK_EQUAL( ftell( file ), 65 );
+    }
+    {
+    // reading 0, u
+    fseek( file, 1, SEEK_SET );
+    unsigned int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%u%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading -0, u
+    fseek( file, 0, SEEK_SET );
+    unsigned int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%u%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading +0, u
+    fseek( file, 3, SEEK_SET );
+    unsigned int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%u%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 5 );
+    }
+    {
+    // reading 2147483647, u
+    fseek( file, 55, SEEK_SET );
+    unsigned int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%u%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 2147483647 );
+    CHECK_EQUAL( n, 10 );
+    CHECK_EQUAL( ftell( file ), 65 );
+    }
+    {
+    // reading +2147483647, u
+    fseek( file, 54, SEEK_SET );
+    unsigned int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%u%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 2147483647 );
+    CHECK_EQUAL( n, 11 );
+    CHECK_EQUAL( ftell( file ), 65 );
+    }
+    {
+    // reading 4294967295, u
+    fseek( file, 67, SEEK_SET );
+    unsigned int i = 0;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%u%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 4294967295, unsigned int, "%u" );
+    CHECK_EQUAL( n, 10 );
+    CHECK_EQUAL( ftell( file ), 77 );
+    }
+    {
+    // reading +4294967295, u
+    fseek( file, 66, SEEK_SET );
+    unsigned int i = 0;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%u%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 4294967295, unsigned int, "%u" );
+    CHECK_EQUAL( n, 11 );
+    CHECK_EQUAL( ftell( file ), 77 );
+    }
+    {
+    // reading 0, i
+    fseek( file, 1, SEEK_SET );
+    signed int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%i%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading -0, i
+    fseek( file, 0, SEEK_SET );
+    signed int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%i%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading +0, i
+    fseek( file, 3, SEEK_SET );
+    signed int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%i%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 5 );
+    }
+    {
+    // reading -2147483648, i
+    fseek( file, 42, SEEK_SET );
+    signed int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%i%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, -2147483648 );
+    CHECK_EQUAL( n, 11 );
+    CHECK_EQUAL( ftell( file ), 53 );
+    }
+    {
+    // reading 2147483647, i
+    fseek( file, 55, SEEK_SET );
+    signed int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%i%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 2147483647 );
+    CHECK_EQUAL( n, 10 );
+    CHECK_EQUAL( ftell( file ), 65 );
+    }
+    {
+    // reading +2147483647, i
+    fseek( file, 54, SEEK_SET );
+    signed int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%i%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 2147483647 );
+    CHECK_EQUAL( n, 11 );
+    CHECK_EQUAL( ftell( file ), 65 );
+    }
+    {
+    // reading 0, d
+    fseek( file, 1, SEEK_SET );
+    signed long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%ld%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0l );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading -0, d
+    fseek( file, 0, SEEK_SET );
+    signed long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%ld%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0l );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading +0, d
+    fseek( file, 3, SEEK_SET );
+    signed long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%ld%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0l );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 5 );
+    }
+    {
+    // reading -2147483648, d
+    fseek( file, 42, SEEK_SET );
+    signed long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%ld%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, -2147483648l );
+    CHECK_EQUAL( n, 11 );
+    CHECK_EQUAL( ftell( file ), 53 );
+    }
+    {
+    // reading 2147483647, d
+    fseek( file, 55, SEEK_SET );
+    signed long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%ld%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 2147483647l );
+    CHECK_EQUAL( n, 10 );
+    CHECK_EQUAL( ftell( file ), 65 );
+    }
+    {
+    // reading +2147483647, d
+    fseek( file, 54, SEEK_SET );
+    signed long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%ld%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 2147483647l );
+    CHECK_EQUAL( n, 11 );
+    CHECK_EQUAL( ftell( file ), 65 );
+    }
+    {
+    // reading 0, u
+    fseek( file, 1, SEEK_SET );
+    unsigned long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0ul );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading -0, u
+    fseek( file, 0, SEEK_SET );
+    unsigned long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0ul );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading +0, u
+    fseek( file, 3, SEEK_SET );
+    unsigned long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0ul );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 5 );
+    }
+    {
+    // reading 2147483647, u
+    fseek( file, 55, SEEK_SET );
+    unsigned long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 2147483647ul );
+    CHECK_EQUAL( n, 10 );
+    CHECK_EQUAL( ftell( file ), 65 );
+    }
+    {
+    // reading +2147483647, u
+    fseek( file, 54, SEEK_SET );
+    unsigned long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 2147483647ul );
+    CHECK_EQUAL( n, 11 );
+    CHECK_EQUAL( ftell( file ), 65 );
+    }
+    {
+    // reading 4294967295, u
+    fseek( file, 67, SEEK_SET );
+    unsigned long i = 0;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lu%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 4294967295ul, unsigned long, "%lu" );
+    CHECK_EQUAL( n, 10 );
+    CHECK_EQUAL( ftell( file ), 77 );
+    }
+    {
+    // reading +4294967295, u
+    fseek( file, 66, SEEK_SET );
+    unsigned long i = 0;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lu%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 4294967295ul, unsigned long, "%lu" );
+    CHECK_EQUAL( n, 11 );
+    CHECK_EQUAL( ftell( file ), 77 );
+    }
+    {
+    // reading 0, i
+    fseek( file, 1, SEEK_SET );
+    signed long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%li%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0l );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading -0, i
+    fseek( file, 0, SEEK_SET );
+    signed long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%li%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0l );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading +0, i
+    fseek( file, 3, SEEK_SET );
+    signed long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%li%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0l );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 5 );
+    }
+    {
+    // reading -2147483648, i
+    fseek( file, 42, SEEK_SET );
+    signed long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%li%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, -2147483648l );
+    CHECK_EQUAL( n, 11 );
+    CHECK_EQUAL( ftell( file ), 53 );
+    }
+    {
+    // reading 2147483647, i
+    fseek( file, 55, SEEK_SET );
+    signed long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%li%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 2147483647l );
+    CHECK_EQUAL( n, 10 );
+    CHECK_EQUAL( ftell( file ), 65 );
+    }
+    {
+    // reading +2147483647, i
+    fseek( file, 54, SEEK_SET );
+    signed long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%li%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 2147483647l );
+    CHECK_EQUAL( n, 11 );
+    CHECK_EQUAL( ftell( file ), 65 );
+    }
+    {
+    // reading 0, d
+    fseek( file, 1, SEEK_SET );
+    signed long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lld%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0ll );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading -0, d
+    fseek( file, 0, SEEK_SET );
+    signed long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lld%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0ll );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading +0, d
+    fseek( file, 3, SEEK_SET );
+    signed long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lld%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0ll );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 5 );
+    }
+    {
+    // reading -9223372036854775808, d
+    fseek( file, 78, SEEK_SET );
+    signed long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lld%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, LLONG_MIN, signed long long, "%lld" ); // should be literal -9223372036854775808ll but GCC balks.
+    CHECK_EQUAL( i < 0ll, 1 );
+    CHECK_EQUAL( n, 20 );
+    CHECK_EQUAL( ftell( file ), 98 );
+    }
+    {
+    // reading 9223372036854775807, d
+    fseek( file, 100, SEEK_SET );
+    signed long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lld%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 9223372036854775807ll, signed long long, "%lld" );
+    CHECK_EQUAL( n, 19 );
+    CHECK_EQUAL( ftell( file ), 119 );
+    }
+    {
+    // reading +9223372036854775807, d
+    fseek( file, 99, SEEK_SET );
+    signed long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lld%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 9223372036854775807ll, signed long long, "%lld" );
+    CHECK_EQUAL( n, 20 );
+    CHECK_EQUAL( ftell( file ), 119 );
+    }
+    {
+    // reading 0, u
+    fseek( file, 1, SEEK_SET );
+    unsigned long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%llu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0ull );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading -0, u
+    fseek( file, 0, SEEK_SET );
+    unsigned long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%llu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0ull );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading +0, u
+    fseek( file, 3, SEEK_SET );
+    unsigned long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%llu%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0ull );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 5 );
+    }
+    {
+    // reading 9223372036854775807, u
+    fseek( file, 100, SEEK_SET );
+    unsigned long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%llu%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 9223372036854775807ull, unsigned long long, "%llu" );
+    CHECK_EQUAL( n, 19 );
+    CHECK_EQUAL( ftell( file ), 119 );
+    }
+    {
+    // reading +9223372036854775807, u
+    fseek( file, 99, SEEK_SET );
+    unsigned long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%llu%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 9223372036854775807ull, unsigned long long, "%llu" );
+    CHECK_EQUAL( n, 20 );
+    CHECK_EQUAL( ftell( file ), 119 );
+    }
+    {
+    // reading 18446744073709551615, u
+    fseek( file, 121, SEEK_SET );
+    unsigned long long i = 0;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%llu%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 18446744073709551615ull, unsigned long long, "%llu" );
+    CHECK_EQUAL( n, 20 );
+    CHECK_EQUAL( ftell( file ), 141 );
+    }
+    {
+    // reading +18446744073709551615, u
+    fseek( file, 120, SEEK_SET );
+    unsigned long long i = 0;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%llu%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 18446744073709551615ull, unsigned long long, "%llu" );
+    CHECK_EQUAL( n, 21 );
+    CHECK_EQUAL( ftell( file ), 141 );
+    }
+    {
+    // reading 0, i
+    fseek( file, 1, SEEK_SET );
+    signed long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lli%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0ll );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading -0, i
+    fseek( file, 0, SEEK_SET );
+    signed long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lli%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0ll );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 2 );
+    }
+    {
+    // reading +0, i
+    fseek( file, 3, SEEK_SET );
+    signed long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lli%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0ll );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 5 );
+    }
+    {
+    // reading -9223372036854775808, i
+    fseek( file, 78, SEEK_SET );
+    signed long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lli%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, LLONG_MIN, signed long long, "%lli" ); // should be literal -9223372036854775808ll but GCC balks.
+    CHECK_EQUAL( i < 0ll, 1 );
+    CHECK_EQUAL( n, 20 );
+    CHECK_EQUAL( ftell( file ), 98 );
+    }
+    {
+    // reading 9223372036854775807, i
+    fseek( file, 100, SEEK_SET );
+    signed long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lli%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 9223372036854775807ll, signed long long, "%lli" );
+    CHECK_EQUAL( n, 19 );
+    CHECK_EQUAL( ftell( file ), 119 );
+    }
+    {
+    // reading +9223372036854775807, i
+    fseek( file, 99, SEEK_SET );
+    signed long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lli%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 9223372036854775807ll, signed long long, "%lli" );
+    CHECK_EQUAL( n, 20 );
+    CHECK_EQUAL( ftell( file ), 119 );
+    }
+    
+    fclose( file );
+    remove( "tmpfile" );
+}
+
+// hexadecimal integer matches
+void suite_three()
+{
+    FILE * file;
+    if ( ( file = fopen( "tmpfile", "wb+" ) ) == NULL )
+    {
+        puts( "Failed to open tmpfile for writing." );
+        return;
+    }
+    fprintf( file, "-0x0 -0x000 -0x7f 0x80 0xff -0x7fff 0x8000 0xffff -0x7fffffff 0x80000000 0xffffffff\n" );
+    fprintf( file, "-0x7fffffffffffffff 0x8000000000000000 0xffffffffffffffff -0x\n" );
+    CHECK_EQUAL( ftell( file ), 146 );
+    {
+    // reading 0, x
+    fseek( file, 3, SEEK_SET );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhx%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 4 );
+    }
+    {
+    // reading -0x0, x
+    fseek( file, 0, SEEK_SET );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhx%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 4 );
+    CHECK_EQUAL( ftell( file ), 4 );
+    }
+    {
+    // reading -0x, x
+    fseek( file, -4, SEEK_END );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhx%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 3 );
+    CHECK_EQUAL( ftell( file ), 145 );
+    }
+    {
+    // reading 0x000, x
+    fseek( file, 5, SEEK_SET );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhx%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 6 );
+    CHECK_EQUAL( ftell( file ), 11 );
+    }
+    {
+    // reading 0x0, i
+    fseek( file, 0, SEEK_SET );
+    signed char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhi%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 4 );
+    CHECK_EQUAL( ftell( file ), 4 );
+    }
+    {
+    // reading 7f, x
+    fseek( file, 15, SEEK_SET );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhx%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 127 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 17 );
+    }
+    {
+    // reading -0x7f, x
+    fseek( file, 12, SEEK_SET );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhx%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, -127, unsigned char, "%hhu" );
+    CHECK_EQUAL( n, 5 );
+    CHECK_EQUAL( ftell( file ), 17 );
+    }
+    {
+    // reading 0x80, i
+    fseek( file, 18, SEEK_SET );
+    signed char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhi%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, -128, signed char, "%hd" );
+    CHECK_EQUAL( n, 4 );
+    CHECK_EQUAL( ftell( file ), 22 );
+    }
+    {
+    // reading ff, x
+    fseek( file, 25, SEEK_SET );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhx%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0xff );
+    CHECK_EQUAL( n, 2 );
+    CHECK_EQUAL( ftell( file ), 27 );
+    }
+    {
+    // reading 0xff, x
+    fseek( file, 23, SEEK_SET );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhx%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 255 );
+    CHECK_EQUAL( n, 4 );
+    CHECK_EQUAL( ftell( file ), 27 );
+    }
+    {
+    // reading 0xff, i
+    fseek( file, 23, SEEK_SET );
+    signed char i = 0;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hhi%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, -1 );
+    CHECK_EQUAL( n, 4 );
+    CHECK_EQUAL( ftell( file ), 27 );
+    }
+    {
+    // reading 0, x
+    fseek( file, 3, SEEK_SET );
+    unsigned short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hx%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 4 );
+    }
+    {
+    // reading -0x0, x
+    fseek( file, 0, SEEK_SET );
+    unsigned short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hx%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 4 );
+    CHECK_EQUAL( ftell( file ), 4 );
+    }
+    {
+    // reading -0x, x
+    fseek( file, -4, SEEK_END );
+    unsigned short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hx%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 3 );
+    CHECK_EQUAL( ftell( file ), 145 );
+    }
+    {
+    // reading 0x000, x
+    fseek( file, 5, SEEK_SET );
+    unsigned short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hx%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 6 );
+    CHECK_EQUAL( ftell( file ), 11 );
+    }
+    {
+    // reading 0x0, i
+    fseek( file, 0, SEEK_SET );
+    signed short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hi%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 4 );
+    CHECK_EQUAL( ftell( file ), 4 );
+    }
+    {
+    // reading 7fff, x
+    fseek( file, 31, SEEK_SET );
+    unsigned short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hx%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 32767 );
+    CHECK_EQUAL( n, 4 );
+    CHECK_EQUAL( ftell( file ), 35 );
+    }
+    {
+    // reading -0x7fff, x
+    fseek( file, 28, SEEK_SET );
+    unsigned short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hx%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, -32767, unsigned short, "%hu" );
+    CHECK_EQUAL( n, 7 );
+    CHECK_EQUAL( ftell( file ), 35 );
+    }
+    {
+    // reading 0x8000, i
+    fseek( file, 36, SEEK_SET );
+    signed short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hi%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, -32768, signed short, "%hd" );
+    CHECK_EQUAL( n, 6 );
+    CHECK_EQUAL( ftell( file ), 42 );
+    }
+    {
+    // reading ffff, x
+    fseek( file, 45, SEEK_SET );
+    unsigned short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hx%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 65535 );
+    CHECK_EQUAL( n, 4 );
+    CHECK_EQUAL( ftell( file ), 49 );
+    }
+    {
+    // reading 0xffff, x
+    fseek( file, 43, SEEK_SET );
+    unsigned short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hx%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 65535 );
+    CHECK_EQUAL( n, 6 );
+    CHECK_EQUAL( ftell( file ), 49 );
+    }
+    {
+    // reading 0xffff, i
+    fseek( file, 43, SEEK_SET );
+    signed short i = 0;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hi%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, -1, signed short, "%hd" );
+    CHECK_EQUAL( n, 6 );
+    CHECK_EQUAL( ftell( file ), 49 );
+    }
+    {
+    // reading 0, x
+    fseek( file, 3, SEEK_SET );
+    unsigned int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%x%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 4 );
+    }
+    {
+    // reading -0x0, x
+    fseek( file, 0, SEEK_SET );
+    unsigned int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%x%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 4 );
+    CHECK_EQUAL( ftell( file ), 4 );
+    }
+    {
+    // reading -0x, x
+    fseek( file, -4, SEEK_END );
+    unsigned int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%x%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 3 );
+    CHECK_EQUAL( ftell( file ), 145 );
+    }
+    {
+    // reading 0x000, x
+    fseek( file, 5, SEEK_SET );
+    unsigned int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%x%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 6 );
+    CHECK_EQUAL( ftell( file ), 11 );
+    }
+    {
+    // reading 0x0, i
+    fseek( file, 0, SEEK_SET );
+    signed int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%i%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0 );
+    CHECK_EQUAL( n, 4 );
+    CHECK_EQUAL( ftell( file ), 4 );
+    }
+    {
+    // reading 7fffffff, x
+    fseek( file, 53, SEEK_SET );
+    unsigned int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%x%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 2147483647 );
+    CHECK_EQUAL( n, 8 );
+    CHECK_EQUAL( ftell( file ), 61 );
+    }
+    {
+    // reading -0x7fffffff, x
+    fseek( file, 50, SEEK_SET );
+    unsigned int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%x%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, -2147483647, unsigned int, "%u" );
+    CHECK_EQUAL( n, 11 );
+    CHECK_EQUAL( ftell( file ), 61 );
+    }
+    {
+    // reading 0x80000000, i
+    fseek( file, 62, SEEK_SET );
+    signed int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%i%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 2147483647, signed int, "%d" ); // NOT overflowing, see strtol() specs.
+    CHECK_EQUAL( n, 10 );
+    CHECK_EQUAL( ftell( file ), 72 );
+    }
+    {
+    // reading ffffffff, x
+    fseek( file, 75, SEEK_SET );
+    unsigned int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%x%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 4294967295, unsigned int, "%d" );
+    CHECK_EQUAL( n, 8 );
+    CHECK_EQUAL( ftell( file ), 83 );
+    }
+    {
+    // reading 0xffffffff, x
+    fseek( file, 73, SEEK_SET );
+    unsigned int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%x%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 4294967295, unsigned int, "%d" );
+    CHECK_EQUAL( n, 10 );
+    CHECK_EQUAL( ftell( file ), 83 );
+    }
+    {
+    // reading 0xffffffff, i
+    fseek( file, 73, SEEK_SET );
+    signed int i = 0;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%i%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 2147483647, signed int, "%d" ); // NOT overflowing; see strtol() specs.
+    CHECK_EQUAL( n, 10 );
+    CHECK_EQUAL( ftell( file ), 83 );
+    }
+    fclose( file );
+    remove( "tmpfile" );    
+}
+
+// octal integer matches
+void suite_four()
+{
+    FILE * file;
+    if ( ( file = fopen( "tmpfile", "wb+" ) ) == NULL )
+    {
+        puts( "Failed to open tmpfile for writing." );
+        return;
+    }
+    fprintf( file, "+0000 -0000 +0177 +0377 -0377 +077777 +0177777 -0177777\n" );
+    fprintf( file, "+017777777777 +037777777777 -037777777777\n" );
+    fprintf( file, "+0777777777777777777777 +01777777777777777777777\n" );
+    fprintf( file, "-01777777777777777777777\n" );
+    CHECK_EQUAL( ftell( file ), 172 );
+    {
+    // reading 0, o
+    fseek( file, 4, SEEK_SET );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hho%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0u );
+    CHECK_EQUAL( n, 1 );
+    CHECK_EQUAL( ftell( file ), 5 );
+    }
+    {
+    // reading +0000, o
+    fseek( file, 0, SEEK_SET );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hho%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0u );
+    CHECK_EQUAL( n, 5 );
+    CHECK_EQUAL( ftell( file ), 5 );
+    }
+    {
+    // reading -0000, o
+    fseek( file, 6, SEEK_SET );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hho%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 0u );
+    CHECK_EQUAL( n, 5 );
+    CHECK_EQUAL( ftell( file ), 11 );
+    }
+    {
+    // reading 0177, o
+    fseek( file, 13, SEEK_SET );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hho%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 127u );
+    CHECK_EQUAL( n, 4 );
+    CHECK_EQUAL( ftell( file ), 17 );
+    }
+    {
+    // reading +0177, o
+    fseek( file, 12, SEEK_SET );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hho%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 127u );
+    CHECK_EQUAL( n, 5 );
+    CHECK_EQUAL( ftell( file ), 17 );
+    }
+    {
+    // reading 0377, o
+    fseek( file, 19, SEEK_SET );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hho%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 255u, unsigned char, "%hhu" );
+    CHECK_EQUAL( n, 4 );
+    CHECK_EQUAL( ftell( file ), 23 );
+    }
+    {
+    // reading +0377, o
+    fseek( file, 18, SEEK_SET );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hho%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 255u, unsigned char, "%hhu" );
+    CHECK_EQUAL( n, 5 );
+    CHECK_EQUAL( ftell( file ), 23 );
+    }
+    {
+    // reading -0377, o
+    fseek( file, 24, SEEK_SET );
+    unsigned char i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%hho%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 1u, unsigned char, "%hhu" );
+    CHECK_EQUAL( n, 5 );
+    CHECK_EQUAL( ftell( file ), 29 );
+    }
+    {
+    // reading 077777, o
+    fseek( file, 31, SEEK_SET );
+    unsigned short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%ho%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 32767u );
+    CHECK_EQUAL( n, 6 );
+    CHECK_EQUAL( ftell( file ), 37 );
+    }
+    {
+    // reading +077777, o
+    fseek( file, 30, SEEK_SET );
+    unsigned short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%ho%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 32767u );
+    CHECK_EQUAL( n, 7 );
+    CHECK_EQUAL( ftell( file ), 37 );
+    }
+    {
+    // reading 0177777, o
+    fseek( file, 39, SEEK_SET );
+    unsigned short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%ho%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 65535u, unsigned short, "%hu" );
+    CHECK_EQUAL( n, 7 );
+    CHECK_EQUAL( ftell( file ), 46 );
+    }
+    {
+    // reading +0177777, o
+    fseek( file, 38, SEEK_SET );
+    unsigned short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%ho%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 65535u, unsigned short, "%hu" );
+    CHECK_EQUAL( n, 8 );
+    CHECK_EQUAL( ftell( file ), 46 );
+    }
+    {
+    // reading -0177777, o
+    fseek( file, 47, SEEK_SET );
+    unsigned short i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%ho%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 1u, unsigned short, "%hu" );
+    CHECK_EQUAL( n, 8 );
+    CHECK_EQUAL( ftell( file ), 55 );
+    }
+    {
+    // reading 017777777777, o
+    fseek( file, 57, SEEK_SET );
+    unsigned int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%o%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 2147483647u );
+    CHECK_EQUAL( n, 12 );
+    CHECK_EQUAL( ftell( file ), 69 );
+    }
+    {
+    // reading +017777777777, o
+    fseek( file, 56, SEEK_SET );
+    unsigned int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%o%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 2147483647u );
+    CHECK_EQUAL( n, 13 );
+    CHECK_EQUAL( ftell( file ), 69 );
+    }
+    {
+    // reading 037777777777, o
+    fseek( file, 71, SEEK_SET );
+    unsigned int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%o%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 4294967295u, unsigned int, "%u" );
+    CHECK_EQUAL( n, 12 );
+    CHECK_EQUAL( ftell( file ), 83 );
+    }
+    {
+    // reading +037777777777, o
+    fseek( file, 70, SEEK_SET );
+    unsigned int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%o%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 4294967295u, unsigned int, "%u" );
+    CHECK_EQUAL( n, 13 );
+    CHECK_EQUAL( ftell( file ), 83 );
+    }
+    {
+    // reading -037777777777, o
+    fseek( file, 84, SEEK_SET );
+    unsigned int i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%o%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 1u, unsigned int, "%u" );
+    CHECK_EQUAL( n, 13 );
+    CHECK_EQUAL( ftell( file ), 97 );
+    }
+    {
+    // reading 017777777777, o
+    fseek( file, 57, SEEK_SET );
+    unsigned long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lo%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 2147483647lu );
+    CHECK_EQUAL( n, 12 );
+    CHECK_EQUAL( ftell( file ), 69 );
+    }
+    {
+    // reading +017777777777, o
+    fseek( file, 56, SEEK_SET );
+    unsigned long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lo%n", &i, &n ), 1 );
+    CHECK_EQUAL( i, 2147483647lu );
+    CHECK_EQUAL( n, 13 );
+    CHECK_EQUAL( ftell( file ), 69 );
+    }
+    {
+    // reading 037777777777, o
+    fseek( file, 71, SEEK_SET );
+    unsigned long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lo%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 4294967295lu, unsigned long, "%lu" );
+    CHECK_EQUAL( n, 12 );
+    CHECK_EQUAL( ftell( file ), 83 );
+    }
+    {
+    // reading +037777777777, o
+    fseek( file, 70, SEEK_SET );
+    unsigned long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lo%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 4294967295lu, unsigned long, "%lu" );
+    CHECK_EQUAL( n, 13 );
+    CHECK_EQUAL( ftell( file ), 83 );
+    }
+    {
+    // reading -037777777777, o
+    fseek( file, 84, SEEK_SET );
+    unsigned long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%lo%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 1lu, unsigned long, "%lu" );
+    CHECK_EQUAL( n, 13 );
+    CHECK_EQUAL( ftell( file ), 97 );
+    }
+    {
+    // reading 0777777777777777777777, o
+    fseek( file, 99, SEEK_SET );
+    unsigned long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%llo%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 9223372036854775807llu, unsigned long long, "%llu" );
+    CHECK_EQUAL( n, 22 );
+    CHECK_EQUAL( ftell( file ), 121 );
+    }
+    {
+    // reading +0777777777777777777777, o
+    fseek( file, 98, SEEK_SET );
+    unsigned long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%llo%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 9223372036854775807llu, unsigned long long, "%llu" );
+    CHECK_EQUAL( n, 23 );
+    CHECK_EQUAL( ftell( file ), 121 );
+    }
+    {
+    // reading 01777777777777777777777, o
+    fseek( file, 123, SEEK_SET );
+    unsigned long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%llo%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 18446744073709551615llu, unsigned long long, "%llu" );
+    CHECK_EQUAL( n, 23 );
+    CHECK_EQUAL( ftell( file ), 146 );
+    }
+    {
+    // reading +01777777777777777777777, o
+    fseek( file, 122, SEEK_SET );
+    unsigned long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%llo%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 18446744073709551615llu, unsigned long long, "%llu" );
+    CHECK_EQUAL( n, 24 );
+    CHECK_EQUAL( ftell( file ), 146 );
+    }
+    {
+    // reading -01777777777777777777777, o
+    fseek( file, 147, SEEK_SET );
+    unsigned long long i = -1;
+    int n;
+    CHECK_EQUAL( fscanf( file, "%llo%n", &i, &n ), 1 );
+    CHECK_FEQUAL( i, 1llu, unsigned long long, "%llu" );
+    CHECK_EQUAL( n, 24 );
+    CHECK_EQUAL( ftell( file ), 171 );
+    }
+    fclose( file );
+    remove( "tmpfile" );    
+}
+
+// string matches
+void suite_five()
+{
+    int const BUFSIZE = 1000;
+    FILE * file;
+    if ( ( file = fopen( "tmpfile", "wb+" ) ) == NULL )
+    {
+        puts( "Failed to open tmpfile for writing." );
+        return;
+    }
+    fprintf( file, "abcdefgh-ijklmnop[qrs%%uvw]xyz" );
+    CHECK_EQUAL( ftell( file ), 29 );
+    char buffer[ BUFSIZE ];
+    {
+    // reading abc
+    fseek( file, 0, SEEK_SET );
+    memset( buffer, '\0', BUFSIZE );
+    int n;
+    CHECK_EQUAL( fscanf( file, "%[abc]%n", buffer, &n ), 1 );
+    CHECK_EQUAL( n, 3 );
+    CHECK_FALSE( memcmp( buffer, "abc", n + 1 ) );
+    CHECK_EQUAL( ftell( file ), 3 );
+    }
+    {
+    // reading a-c
+    fseek( file, 0, SEEK_SET );
+    memset( buffer, '\0', BUFSIZE );
+    int n;
+    CHECK_EQUAL( fscanf( file, "%[a-c]%n", buffer, &n ), 1 );
+    CHECK_EQUAL( n, 3 );
+    CHECK_FALSE( memcmp( buffer, "abc", n + 1 ) );
+    CHECK_EQUAL( ftell( file ), 3 );
+    }
+    {
+    // reading a-h
+    fseek( file, 0, SEEK_SET );
+    memset( buffer, '\0', BUFSIZE );
+    int n;
+    CHECK_EQUAL( fscanf( file, "%[a-h]%n", buffer, &n ), 1 );
+    CHECK_EQUAL( n, 8 );
+    CHECK_FALSE( memcmp( buffer, "abcdefgh", n + 1 ) );
+    CHECK_EQUAL( ftell( file ), 8 );
+    }
+    {
+    // reading o-r, including [, seperate char
+    fseek( file, 15, SEEK_SET );
+    memset( buffer, '\0', BUFSIZE );
+    int n;
+    CHECK_EQUAL( fscanf( file, "%[[o-qr]%n", buffer, &n ), 1 );
+    CHECK_EQUAL( n, 5 );
+    CHECK_FALSE( memcmp( buffer, "op[qr", n + 1 ) );
+    CHECK_EQUAL( ftell( file ), 20 );
+    }
+    {
+    // reading v-y, including ], two groups
+    fseek( file, 23, SEEK_SET );
+    memset( buffer, '\0', BUFSIZE );
+    int n;
+    CHECK_EQUAL( fscanf( file, "%[]v-wx-y]%n", buffer, &n ), 1 );
+    CHECK_EQUAL( n, 5 );
+    CHECK_FALSE( memcmp( buffer, "vw]xy", n + 1 ) );
+    CHECK_EQUAL( ftell( file ), 28 );
+    }
+    {
+    // missing on first character
+    fseek( file, 0, SEEK_SET );
+    memset( buffer, '\0', BUFSIZE );
+    int n;
+    CHECK_EQUAL( fscanf( file, "%[b]%n", buffer, &n ), 0 );
+    CHECK_FALSE( memcmp( buffer, "", 1 ) );
+    CHECK_EQUAL( ftell( file ), 0 );
+    }
+    {
+    // eof while reading, two groups
+    fseek( file, 27, SEEK_SET );
+    memset( buffer, '\0', BUFSIZE );
+    int n;
+    CHECK_EQUAL( fscanf( file, "%[a-zA-Z]%n", buffer, &n ), 1 );
+    CHECK_EQUAL( n, 2 );
+    CHECK_FALSE( memcmp( buffer, "yz", n + 1 ) );
+    CHECK_TRUE( feof( file ) );
+    CHECK_FALSE( ferror( file ) );
+    CHECK_EQUAL( ftell( file ), 29 );
+    }
+    {
+    // eof before reading
+    fseek( file, 29, SEEK_SET );
+    memset( buffer, '\0', BUFSIZE );
+    int n;
+    CHECK_EQUAL( fscanf( file, "%[a-z]%n", buffer, &n ), -1 );
+    CHECK_FALSE( memcmp( buffer, "", 1 ) );
+    CHECK_TRUE( feof( file ) );
+    CHECK_FALSE( ferror( file ) );
+    CHECK_EQUAL( ftell( file ), 29 );
+    }
+    {
+    // negation - [^...]
+    fseek( file, 0, SEEK_SET );
+    memset( buffer, '\0', BUFSIZE );
+    int n;
+    CHECK_EQUAL( fscanf( file, "%[^d-f]%n", buffer, &n ), 1 );
+    CHECK_EQUAL( n, 3 );
+    CHECK_FALSE( memcmp( buffer, "abc", 4 ) );
+    CHECK_EQUAL( ftell( file ), 3 );
+    }
+    fclose( file );
+    remove( "tmpfile" );    
+}
+
+#if 0
 char scanstring[] = "  1 23\00045\000\00067 ";
 
 void scantest( int testnr, FILE * fh, size_t position, char const * format, 
@@ -77,5 +2078,6 @@ int main( void )
 
     return TEST_RESULTS;
 }
+#endif
 
 #endif