[musl] regexec(): not matching ASCII in latin1/"bad utf8" text while on a UTF8 locale

[musl] regexec(): not matching ASCII in latin1/"bad utf8" text while on a UTF8 locale

[Oliver Webb]

The boiled down code example code for this is:

#include <regex.h>
#include <stdio.h>
#include <locale.h>
int main() {
  uselocale(newlocale(LC_CTYPE_MASK, "C.UTF-8", 0));
  regex_t r; regcomp(&r, "\n", 0);
  printf("%d\n", regexec(&r, "\xb5\n", 0, 0, 0) == REG_NOMATCH);
}



(\xb5 can be substituted for any latin1 or improper utf8)

Which on glibc will print 0, on musl it will print 1

Thanks,

-   Oliver Webb <aquahobbyist@proton.me>