Add a "fork" of musl as //fusl.

fusl/src/locale/__mo_lookup.c

+#include <stdint.h>
+#include <string.h>
+
+static inline uint32_t swapc(uint32_t x, int c)
+{
+        return c ? x>>24 | x>>8&0xff00 | x<<8&0xff0000 | x<<24 : x;
+}
+
+const char *__mo_lookup(const void *p, size_t size, const char *s)
+{
+        const uint32_t *mo = p;
+        int sw = *mo - 0x950412de;
+        uint32_t b = 0, n = swapc(mo[2], sw);
+        uint32_t o = swapc(mo[3], sw);
+        uint32_t t = swapc(mo[4], sw);
+        if (n>=size/4 || o>=size-4*n || t>=size-4*n || ((o|t)%4))
+                return 0;
+        o/=4;
+        t/=4;
+        for (;;) {
+                uint32_t ol = swapc(mo[o+2*(b+n/2)], sw);
+                uint32_t os = swapc(mo[o+2*(b+n/2)+1], sw);
+                if (os >= size || ol >= size-os || ((char *)p)[os+ol])
+                        return 0;
+                int sign = strcmp(s, (char *)p + os);
+                if (!sign) {
+                        uint32_t tl = swapc(mo[t+2*(b+n/2)], sw);
+                        uint32_t ts = swapc(mo[t+2*(b+n/2)+1], sw);
+                        if (ts >= size || tl >= size-ts || ((char *)p)[ts+tl])
+                                return 0;
+                        return (char *)p + ts;
+                }
+                else if (n == 1) return 0;
+                else if (sign < 0)
+                        n /= 2;
+                else {
+                        b += n/2;
+                        n -= n/2;
+                }
+        }
+        return 0;
+}