// Stubs for libc functions Lua references that our libc doesn't provide.
// Kept minimal — only what's needed for the small embedded scripts that
// our test harness runs (no real file I/O, no locale).
#include <string.h>
#include <stdio.h>


int strcoll(const char *a, const char *b) {
    return strcmp(a, b);
}


size_t strxfrm(char *dst, const char *src, size_t n) {
    // C locale: strxfrm is just a length-bounded copy.
    size_t len = strlen(src);
    if (n > 0) {
        size_t copy = (len < n) ? len : (n - 1);
        memcpy(dst, src, copy);
        dst[copy] = '\0';
    }
    return len;
}


// freopen is referenced by lauxlib.c's loadfile for switching to "rb"
// mode after a preamble peek.  Our fopen already opens binary-clean
// (no \r\n translation), so we can just return the same handle.
FILE *freopen(const char *path, const char *mode, FILE *stream) {
    (void)path;
    (void)mode;
    return stream;
}