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LWG issue 2143: ios_base::xalloc should be thread-safe

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@192539 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow 2013-10-12 19:13:52 +00:00
parent 1206720869
commit 206ce1faaf
2 changed files with 12 additions and 1 deletions
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8
include/ios
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@ -216,6 +216,10 @@ storage-class-specifier const error_category& iostream_category;
#include <__locale>
#include <system_error>
#if __has_feature(cxx_atomic)
#include <atomic> // for __xindex_
#endif
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
@ -363,7 +367,11 @@ private:
int* __index_;
size_t __event_size_;
size_t __event_cap_;
#if __has_feature(cxx_atomic)
static atomic<int> __xindex_;
#else
static int __xindex_;
#endif
long* __iarray_;
size_t __iarray_size_;
size_t __iarray_cap_;

5
src/ios.cpp
View File

@ -149,8 +149,11 @@ ios_base::getloc() const
}
// xalloc
#if __has_feature(cxx_atomic)
atomic<int> ios_base::__xindex_ = ATOMIC_VAR_INIT(0);
#else
int ios_base::__xindex_ = 0;
#endif
int
ios_base::xalloc()