fix public clone function to be safe and usable by applications

[musl] / src / internal / atomic.h

diff --git a/src/internal/atomic.h b/src/internal/atomic.h
index 99539cc..96c1552 100644 (file)
--- a/src/internal/atomic.h
+++ b/src/internal/atomic.h
@@ -319,7 +319,7 @@ static inline int a_clz_64(uint64_t x)
 #define a_clz_32 a_clz_32
 static inline int a_clz_32(uint32_t x)
 {
-       x--;
+       x >>= 1;
        x |= x >> 1;
        x |= x >> 2;
        x |= x >> 4;