https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89641
Bug ID: 89641
Summary: std::atomic<T> no longer works
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: d25fe0be at outlook dot com
Target Milestone: ---
Live example: https://wandbox.org/permlink/j7rBCbdmy9sUBRZQ
Compiling the following snippet ...
```cpp
#include <atomic>
std::atomic<int> x;
int main() {
++x;
}
```
... fails with:
```
/opt/wandbox/gcc-head/include/c++/9.0.1/bits/atomic_base.h:319:45: error:
cannot convert 'const std::memory_order' to 'int'
319 | { return __atomic_add_fetch(&_M_i, 1, memory_order_seq_cst); }
| ^~~~~~~~~~~~~~~~~~~~
| |
| const std::memory_order
<built-in>: note: initializing argument 3 of 'unsigned int
__atomic_add_fetch_4(volatile void*, unsigned int, int)'
```
I guess that this is related to implementing P0439R0 (Make std::memory_order a
scoped enumeration)?
