Using gcc 4.8.0 trunk the following program - compiled with the flags -pedantic-errors -std=c++11 -Wall is rejected: //---------------------------------- #include <atomic> int main() { volatile std::atomic<bool> ab1; ab1 = true; volatile std::atomic_bool ab2; ab2 = true; } //---------------------------------- "main.cpp||In function 'int main()':| main.cpp|5|error: ambiguous overload for 'operator=' (operand types are 'volatile std::atomic<bool>' and 'bool')| main.cpp|5|note: candidates are:| [..]gcc\include\c++\4.8.0\atomic|485|note: std::atomic<bool>& std::atomic<bool>::operator=(const std::atomic<bool>&) volatile <deleted>| [..]gcc\include\c++\4.8.0\atomic|64|note: std::atomic_bool& std::atomic_bool::operator=(const std::atomic_bool&) volatile <deleted>| main.cpp|7|error: use of deleted function 'std::atomic_bool& std::atomic_bool::operator=(const std::atomic_bool&) volatile'| [..]gcc\include\c++\4.8.0\atomic|64|error: declared here| " The problem is due to the missing overload (part of the specification): bool operator=(bool __i) volatile noexcept;
Author: redi Date: Tue Feb 26 23:46:21 2013 New Revision: 196296 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=196296 Log: PR libstdc++/56012 * include/bits/atomic_base.h (atomic_flag): Fix narrowing conversion. * testsuite/29_atomics/atomic/operators/56012.cc: New. PR libstdc++/56011 * include/std/atomic (atomic<bool>::operator=(bool) volatile): Add missing overload. * testsuite/29_atomics/atomic/operators/56011.cc: New. Added: trunk/libstdc++-v3/testsuite/29_atomics/atomic/operators/56011.cc trunk/libstdc++-v3/testsuite/29_atomics/atomic_flag/cons/56012.cc Modified: trunk/libstdc++-v3/ChangeLog trunk/libstdc++-v3/include/bits/atomic_base.h trunk/libstdc++-v3/include/std/atomic
Author: redi Date: Wed Feb 27 00:57:36 2013 New Revision: 196301 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=196301 Log: PR libstdc++/56012 * include/bits/atomic_base.h (atomic_flag): Fix narrowing conversion. * testsuite/29_atomics/atomic/operators/56012.cc: New. PR libstdc++/56011 * include/std/atomic (atomic<bool>::operator=(bool) volatile): Add missing overload. * testsuite/29_atomics/atomic/operators/56011.cc: New. Added: branches/gcc-4_7-branch/libstdc++-v3/testsuite/29_atomics/atomic/operators/56011.cc branches/gcc-4_7-branch/libstdc++-v3/testsuite/29_atomics/atomic_flag/cons/56012.cc Modified: branches/gcc-4_7-branch/libstdc++-v3/ChangeLog branches/gcc-4_7-branch/libstdc++-v3/include/bits/atomic_base.h branches/gcc-4_7-branch/libstdc++-v3/include/std/atomic
fixed