Make sure we don't call bsr on 0 capacity

dlang · Oct 9, 2024 · f42d5f0 · f42d5f0
1 parent f115b37
commit f42d5f0
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/druntime/src/rt/lifetime.d b/druntime/src/rt/lifetime.d
@@ -1783,7 +1783,7 @@ size_t newCapacity(size_t newlength, size_t elemsize)
      * growing if 2x would fill up the address space (for 32-bit)
      */
     enum largestAllowed = (ulong.max >> 8) & (size_t.max >> 1);
-    if (newcap & ~largestAllowed)
+    if (!newcap || (newcap & ~largestAllowed))
         return newcap;
 
     /*