Bug: libc implementation of strcasestr() doesn't work correctly #1323
Description
Contact Details
What happened?
cosmoplitian libc strcasestr() return 0 for below example
#ifdef __COSMOPOLITIAN__
#include <libc/str/str.h>
#endif
#include <stdio.h>
int main() {
printf("strcasestr(\"Windows\", \"win\") = %llu", strcasestr("Windows", "win"));
}
Version
cosmocc (GCC) 14.1.0
What operating system are you seeing the problem on?
both on x86_64 windows/linux
Relevant log output
(venv) ➜ backend git:(fastdev) ✗ $CC -D_COSMO_SOURCE testb.c -o testb
(venv) ➜ backend git:(fastdev) ✗ ./testb
strcasestr("Windows", "win") = 0%
(venv) ➜ backend git:(fastdev) ✗ cc testb.c -o testb
testb.c: In function ‘main’:
testb.c:7:53: warning: implicit declaration of function ‘strcasestr’ [-Wimplicit-function-declaration]
7 | printf("strcasestr(\"Windows\", \"win\") = %llu", strcasestr("Windows", "win"));
| ^~~~~~~~~~
(venv) ➜ backend git:(fastdev) ✗ ./testb
strcasestr("Windows", "win") = 3786059788%note $CC refers cosmocc