Fix building on MSVC

Revert change to __builtin_ctzl function made in cloudflare@c9479d1
sharpvnc · Mar 27, 2023 · 0f1ac81 · 0f1ac81
1 parent 4e4e4c4
commit 0f1ac81
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/deflate.h b/deflate.h
@@ -337,6 +337,9 @@ extern const uint8_t ZLIB_INTERNAL _dist_code[];
 int __inline __builtin_ctzl(unsigned long mask)
 {
     unsigned long index ;
+
+    return _BitScanForward(&index, mask) == 0 ? 32 : ((int)index) ;
+}
 #else
 #define likely(x)       __builtin_expect((x),1)
 #define unlikely(x)     __builtin_expect((x),0)