[PATCH] D40743: Make rehash(0) work with ubsan's unsigned-integer-overflow.

[Dan Albert via Phabricator via cfe-commits]

danalbert created this revision.

Repository:
  rCXX libc++

https://reviews.llvm.org/D40743

Files:
  include/__hash_table


Index: include/__hash_table
===================================================================
--- include/__hash_table
+++ include/__hash_table
@@ -2136,7 +2136,7 @@
 void
 __hash_table<_Tp, _Hash, _Equal, _Alloc>::rehash(size_type __n)
 {
-    if (__n == 1)
+    if (__n < 2)
         __n = 2;
     else if (__n & (__n - 1))
         __n = __next_prime(__n);



Index: include/__hash_table
===================================================================
--- include/__hash_table
+++ include/__hash_table
@@ -2136,7 +2136,7 @@
 void
 __hash_table<_Tp, _Hash, _Equal, _Alloc>::rehash(size_type __n)
 {
-    if (__n == 1)
+    if (__n < 2)
         __n = 2;
     else if (__n & (__n - 1))
         __n = __next_prime(__n);

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