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Revert "Revert "Fix unsafe locale usage in wcstod_l fallback""

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This reverts commit c15a702f18.

The tests are no longer broken after rerunning CMake.
This commit is contained in:
ridiculousfish 2019-01-19 13:23:19 -08:00
parent 3847d2e9d1
commit b1f5cb9bf4
1 changed files with 6 additions and 6 deletions
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12
src/fallback.cpp
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@ -394,13 +394,13 @@ int flock(int fd, int op) {
// For platforms without wcstod_l C extension, wrap wcstod after changing the
// thread-specific locale.
double fish_compat::wcstod_l(const wchar_t *enptr, wchar_t **endptr, locale_t loc) {
char *saved_locale = strdup(setlocale(LC_NUMERIC, NULL));
// Yes, this is hardcoded to use the "C" locale.
// That's the only thing we need, and uselocale(loc) broke in my testing.
setlocale(LC_NUMERIC, "C");
// Create and use a new, thread-specific locale
locale_t locale = newlocale(LC_NUMERIC, "C", nullptr);
locale_t prev_locale = uselocale(locale);
double ret = wcstod(enptr, endptr);
setlocale(LC_NUMERIC, saved_locale);
free(saved_locale);
// Restore the old locale before freeing the locale we created and are still using
uselocale(prev_locale);
freelocale(locale);
return ret;
}
#endif // defined(wcstod_l)