Caught "0xz" corner case, and improved testing.

[pdclib] / functions / stdlib / strtol.c

diff --git a/functions/stdlib/strtol.c b/functions/stdlib/strtol.c
index 4a3b5a68f8c56e89fffddf53d961a1be03582759..ea54b98c6ebc0442a87870b5b7bb9289db8bc322 100644 (file)
--- a/functions/stdlib/strtol.c
+++ b/functions/stdlib/strtol.c
@@ -21,12 +21,12 @@ long int strtol( const char * s, char ** endptr, int base )
     if ( base < 2 || base > 36 ) return 0;
     if ( sign == '+' )
     {
-        rc = _PDCLIB_strtox_main( &p, (unsigned)base, (uintmax_t)LONG_MAX, (uintmax_t)( LONG_MAX / base ), (uintmax_t)( LONG_MAX % base ), &sign );
+        rc = (long int)_PDCLIB_strtox_main( &p, (unsigned)base, (uintmax_t)LONG_MAX, (uintmax_t)( LONG_MAX / base ), (int)( LONG_MAX % base ), &sign );
     }
     else
     {
         /* FIXME: This breaks on some machines that round negatives wrongly */
-        rc = _PDCLIB_strtox_main( &p, (unsigned)base, (uintmax_t)LONG_MIN, (uintmax_t)( LONG_MIN / -base ), (uintmax_t)( -( LONG_MIN % base ) ), &sign );
+        rc = (long int)_PDCLIB_strtox_main( &p, (unsigned)base, (uintmax_t)LONG_MIN, (uintmax_t)( LONG_MIN / -base ), (int)( -( LONG_MIN % base ) ), &sign );
     }
     if ( endptr != NULL ) *endptr = ( p != NULL ) ? (char *) p : (char *) s;
     return ( sign == '+' ) ? rc : -rc;
@@ -49,19 +49,27 @@ int main( void )
     char * endptr;
     /* this, to base 36, overflows even a 256 bit integer */
     char overflow[] = "-ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ_";
+    /* tricky border case */
+    char tricky[] = "+0xz";
     errno = 0;
     /* basic functionality */
     TESTCASE( strtol( "123", NULL, 10 ) == 123 );
     /* proper detecting of default base 10 */
-    TESTCASE( strtol( "123", NULL, 0 ) == 123 );
+    TESTCASE( strtol( "456", NULL, 0 ) == 456 );
     /* proper functioning to smaller base */
     TESTCASE( strtol( "14", NULL, 8 ) == 12 );
     /* proper autodetecting of octal */
-    TESTCASE( strtol( "014", NULL, 0 ) == 12 );
+    TESTCASE( strtol( "016", NULL, 0 ) == 14 );
     /* proper autodetecting of hexadecimal, lowercase 'x' */
     TESTCASE( strtol( "0xFF", NULL, 0 ) == 255 );
     /* proper autodetecting of hexadecimal, uppercase 'X' */
-    TESTCASE( strtol( "0XFF", NULL, 0 ) == 255 );
+    TESTCASE( strtol( "0Xa1", NULL, 0 ) == 161 );
+    /* proper handling of border case: 0x followed by non-hexdigit */
+    TESTCASE( strtol( tricky, &endptr, 0 ) == 0 );
+    TESTCASE( endptr == tricky + 2 );
+    /* proper handling of border case: 0 followed by non-octdigit */
+    TESTCASE( strtol( tricky, &endptr, 8 ) == 0 );
+    TESTCASE( endptr == tricky + 2 );
     /* errno should still be 0 */
     TESTCASE( errno == 0 );
     /* overflowing subject sequence must still return proper endptr */
@@ -74,7 +82,7 @@ int main( void )
     TESTCASE( errno == ERANGE );
     TESTCASE( ( endptr - overflow ) == 53 );
     /* testing skipping of leading whitespace */
-    TESTCASE( strtol( " \n\v\t\f123", NULL, 0 ) == 123 );
+    TESTCASE( strtol( " \n\v\t\f789", NULL, 0 ) == 789 );
     /* testing conversion failure */
     TESTCASE( strtol( overflow, &endptr, 10 ) == 0 );
     TESTCASE( endptr == overflow );
@@ -92,7 +100,7 @@ int main( void )
     TESTCASE( strtol( "0x80000000", NULL, 0 ) == LONG_MAX );
     TESTCASE( errno == ERANGE );
     errno = 0;
-    TESTCASE( strtol( "-0x7FFFFFFF", NULL, 0 ) == 0x80000001 );
+    TESTCASE( strtol( "-0x7FFFFFFF", NULL, 0 ) == (long)0x80000001 );
     TESTCASE( errno == 0 );
     TESTCASE( strtol( "-0x80000000", NULL, 0 ) == LONG_MIN );
     TESTCASE( errno == 0 );
@@ -106,7 +114,7 @@ int main( void )
     TESTCASE( strtol( "0x8000000000000000", NULL, 0 ) == LONG_MAX );
     TESTCASE( errno == ERANGE );
     errno = 0;
-    TESTCASE( strtol( "-0x7FFFFFFFFFFFFFFF", NULL, 0 ) == -0x8000000000000001 );
+    TESTCASE( strtol( "-0x7FFFFFFFFFFFFFFF", NULL, 0 ) == (long)0x8000000000000001 );
     TESTCASE( errno == 0 );
     TESTCASE( strtol( "-0x8000000000000000", NULL, 0 ) == LONG_MIN );
     TESTCASE( errno == 0 );