[libcxx] r312932 - mark mersenne_twister_engine<>::seed(result_type __sd) with _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK to placate UBSAN. Fixes PR#34160
Marshall Clow via cfe-commits
cfe-commits at lists.llvm.org
Mon Sep 11 11:10:33 PDT 2017
Author: marshall
Date: Mon Sep 11 11:10:33 2017
New Revision: 312932
URL: http://llvm.org/viewvc/llvm-project?rev=312932&view=rev
Log:
mark mersenne_twister_engine<>::seed(result_type __sd) with _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK to placate UBSAN. Fixes PR#34160
Modified:
libcxx/trunk/include/random
Modified: libcxx/trunk/include/random
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/include/random?rev=312932&r1=312931&r2=312932&view=diff
==============================================================================
--- libcxx/trunk/include/random (original)
+++ libcxx/trunk/include/random Mon Sep 11 11:10:33 2017
@@ -2308,6 +2308,7 @@ template <class _UIntType, size_t __w, s
void
mersenne_twister_engine<_UIntType, __w, __n, __m, __r, __a, __u, __d, __s, __b,
__t, __c, __l, __f>::seed(result_type __sd)
+ _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK
{ // __w >= 2
__x_[0] = __sd & _Max;
for (size_t __i = 1; __i < __n; ++__i)
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