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Make rehash(0) work with ubsan's unsigned-integer-overflow.

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Reviewers: mclow.lists, EricWF

Reviewed By: mclow.lists

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D40743

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@322031 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Albert
2018-01-08 21:49:12 +00:00
parent 4d8cc6db10
commit 7023194c8d
1 changed files with 1 additions and 1 deletions
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2
include/__hash_table
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@@ -2136,7 +2136,7 @@ template <class _Tp, class _Hash, class _Equal, class _Alloc>
void void
__hash_table<_Tp, _Hash, _Equal, _Alloc>::rehash(size_type __n) __hash_table<_Tp, _Hash, _Equal, _Alloc>::rehash(size_type __n)
{ {
if (__n == 1) if (__n < 2)
__n = 2; __n = 2;
else if (__n & (__n - 1)) else if (__n & (__n - 1))
__n = __next_prime(__n); __n = __next_prime(__n);