diff options
Diffstat (limited to 'libc/string/i386/memchr.c')
| -rw-r--r-- | libc/string/i386/memchr.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/libc/string/i386/memchr.c b/libc/string/i386/memchr.c index bff0538d7..772251cee 100644 --- a/libc/string/i386/memchr.c +++ b/libc/string/i386/memchr.c @@ -33,6 +33,7 @@ #include <string.h> #undef memchr +//#define memchr TESTING void *memchr(const void *s, int c, size_t count) { void *edi; @@ -51,4 +52,24 @@ void *memchr(const void *s, int c, size_t count) ); return edi; } +#ifndef memchr libc_hidden_def(memchr) +#else +/* Uncomment TESTING, gcc -D__USE_GNU -m32 -Os memchr.c -o memchr + * and run ./memchr + */ +int main() +{ + static const char str[] = "abc.def"; + printf((char*)memchr(str, '.',-2) - str == 3 ? "ok\n" : "BAD!\n"); + printf((char*)memchr(str, '.',-1) - str == 3 ? "ok\n" : "BAD!\n"); + printf((char*)memchr(str, '.', 0) == NULL ? "ok\n" : "BAD!\n"); + printf((char*)memchr(str, '.', 1) == NULL ? "ok\n" : "BAD!\n"); + printf((char*)memchr(str, '.', 2) == NULL ? "ok\n" : "BAD!\n"); + printf((char*)memchr(str, '.', 3) == NULL ? "ok\n" : "BAD!\n"); + printf((char*)memchr(str, '.', 4) - str == 3 ? "ok\n" : "BAD!\n"); + printf((char*)memchr(str, '.', 5) - str == 3 ? "ok\n" : "BAD!\n"); + printf((char*)memchr(str+3, '.', 0) == NULL ? "ok\n" : "BAD!\n"); + printf((char*)memchr(str+3, '.', 5) - str == 3 ? "ok\n" : "BAD!\n"); +} +#endif |