c++/71675 - __atomic_compare_exchange_n returns wrong type for
typed enum
__atomic_compare_exchange_n is documented to return bool but when
its operands are of one of the character types or derived from
it (such as a class enum in C++) it converts the bool result to
that type. The attached patch corrects that to prevent this
conversion, analogously to what's already being done for
__sync_bool_compare_and_swap.
Martin
gcc-71675.diff
PR c++/71675 - __atomic_compare_exchange_n returns wrong type for typed enum
gcc/c-family/ChangeLog:
2016-06-28 Martin Sebor <msebor@redhat.com>
PR c++/71675
* c-common.c (resolve_overloaded_builtin): Avoid converting
__atomic_compare_exchange_n return type to that of what its
first argument points to.
gcc/testsuite/ChangeLog:
2016-06-28 Martin Sebor <msebor@redhat.com>
PR c++/71675
* g++.dg/ext/atomic-3.C: New test.
* gcc.dg/atomic/pr71675.c: New test.