Fix UB - signed integer overflow in regex. Thanks to Tim Shen for the patch. Reviewed as https://reviews.llvm.org/D39066
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@316172 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/regex b/include/regex
index bd72012..80f958e 100644
--- a/include/regex
+++ b/include/regex
@@ -4064,6 +4064,8 @@
__first != __last && ( __val = __traits_.value(*__first, 10)) != -1;
++__first)
{
+ if (__c >= std::numeric_limits<int>::max() / 10)
+ __throw_regex_error<regex_constants::error_badbrace>();
__c *= 10;
__c += __val;
}