X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstdlib%2Fstrtoull.c;h=a28bb45d5ef7c7fca86e85feae554d3e45a320b9;hb=cd6cfe0f578c4f744ddc9a342243aff6b42f8027;hp=b4204e91bac79e1fb78e96159f70c0fb647ea1f1;hpb=9507e63e4b8558c8a3337521853f80f72f83a689;p=pdclib.old

diff --git a/functions/stdlib/strtoull.c b/functions/stdlib/strtoull.c
index b4204e9..a28bb45 100644
--- a/functions/stdlib/strtoull.c
+++ b/functions/stdlib/strtoull.c
@@ -35,19 +35,27 @@ 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( strtoull( "123", NULL, 10 ) == 123 );
     /* proper detecting of default base 10 */
-    TESTCASE( strtoull( "123", NULL, 0 ) == 123 );
+    TESTCASE( strtoull( "456", NULL, 0 ) == 456 );
     /* proper functioning to smaller base */
     TESTCASE( strtoull( "14", NULL, 8 ) == 12 );
     /* proper autodetecting of octal */
-    TESTCASE( strtoull( "014", NULL, 0 ) == 12 );
+    TESTCASE( strtoull( "016", NULL, 0 ) == 14 );
     /* proper autodetecting of hexadecimal, lowercase 'x' */
     TESTCASE( strtoull( "0xFF", NULL, 0 ) == 255 );
     /* proper autodetecting of hexadecimal, uppercase 'X' */
-    TESTCASE( strtoull( "0XFF", NULL, 0 ) == 255 );
+    TESTCASE( strtoull( "0Xa1", NULL, 0 ) == 161 );
+    /* proper handling of border case: 0x followed by non-hexdigit */
+    TESTCASE( strtoull( tricky, &endptr, 0 ) == 0 );
+    TESTCASE( endptr == tricky + 2 );
+    /* proper handling of border case: 0 followed by non-octdigit */
+    TESTCASE( strtoull( tricky, &endptr, 8 ) == 0 );
+    TESTCASE( endptr == tricky + 2 );
     /* errno should still be 0 */
     TESTCASE( errno == 0 );
     /* overflowing subject sequence must still return proper endptr */
@@ -60,13 +68,34 @@ int main( void )
     TESTCASE( errno == ERANGE );
     TESTCASE( ( endptr - overflow ) == 53 );
     /* testing skipping of leading whitespace */
-    TESTCASE( strtoull( " \n\v\t\f123", NULL, 0 ) == 123 );
+    TESTCASE( strtoull( " \n\v\t\f789", NULL, 0 ) == 789 );
     /* testing conversion failure */
     TESTCASE( strtoull( overflow, &endptr, 10 ) == 0 );
     TESTCASE( endptr == overflow );
     endptr = NULL;
     TESTCASE( strtoull( overflow, &endptr, 0 ) == 0 );
     TESTCASE( endptr == overflow );
+    errno = 0;
+/* long long -> 64 bit */
+#if ULLONG_MAX >> 63 == 1
+    /* testing "even" overflow, i.e. base is power of two */
+    TESTCASE( strtoull( "18446744073709551615", NULL, 0 ) == ULLONG_MAX );
+    TESTCASE( errno == 0 );
+    TESTCASE( strtoull( "18446744073709551616", NULL, 0 ) == ULLONG_MAX );
+    TESTCASE( errno == ERANGE );
+    /* TODO: test "odd" overflow, i.e. base is not power of two */
+/* long long -> 128 bit */
+#elif ULLONG_MAX >> 127 == 1
+    /* testing "even" overflow, i.e. base is power of two */
+    TESTCASE( strtoull( "340282366920938463463374607431768211455", NULL, 0 ) == ULLONG_MAX );
+    TESTCASE( errno == 0 );
+    TESTCASE( strtoull( "340282366920938463463374607431768211456", NULL, 0 ) == ULLONG_MAX );
+    TESTCASE( errno == ERANGE );
+    /* TODO: test "odd" overflow, i.e. base is not power of two */
+#else
+#error Unsupported width of 'long long' (neither 64 nor 128 bit).
+#endif
     return TEST_RESULTS;
 }
+
 #endif