locale: Fix UB in elem_hash

The ubsan triggers:

UBSAN: Undefined behaviour in ./elem-hash.h:27:14 left shift of 360447856 by 3 cannot be represented in type 'int'

Using unsigned shift here zero fill like signed.

diff --git a/locale/elem-hash.h b/locale/elem-hash.h
index 5d34ec43f32ac091e80baec6a347a327565aac05..8052b0fe6d67f0995d7d35591b81d940da2c8125 100644 (file)
--- a/locale/elem-hash.h
+++ b/locale/elem-hash.h
@@ -24,7 +24,7 @@ elem_hash (const char *str, int32_t n)
 
   while (n-- > 0)
     {
-      result <<= 3;
+      result = (uint32_t)result << 3;
       result += *str++;
     }