https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95703
Bug ID: 95703
Summary: Please backport
0998d2fd59e7a5eb3a3566c57625702bbdc6a05f to gcc 9
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: rafael at espindo dot la
CC: jason at redhat dot com
Target Milestone: ---
We (seastar) recently hit a build error with gcc 9 because the fix in
0998d2fd59e7a5eb3a3566c57625702bbdc6a05f is missing.
Given that P1286R2 is about c++11 and newer, could the fix be backported to gcc
9?
The original commit message is:
Implement P1286R2, Contra CWG1778
The C++11 requirement that an explicit exception-specification on a
defaulted function match the implicit one was found to be problematic for
std::atomic. This paper, adopted in February, simply removes that
requirement: if an explicitly defaulted function has a different
exception-specification, that now works just like a user-written function:
either it isn't noexcept when it could be, or it is noexcept and will call
terminate if an exception is thrown.
