wcschr.c\string\src - musl - musl - an implementation of the standard library for Linux-based systems

#include <wchar.h>
wchar_t *wcschr(const wchar_t *s, wchar_t c)
{
	if (!c) return (wchar_t *)s + wcslen(s);
	for (; *s && *s != c; s++);
	return *s ? (wchar_t *)s : 0;
}