On Tue, 2022-11-22 at 22:13 -0500, Richard Kimberly Heck wrote:
> Here's the program to check:
>
> #define _GLIBCXX_DEBUG 1
> #include <unordered_set>
>
> int main()
> {
> std::unordered_set<int>::iterator it{};
> it == it;
> }
>
> That's what was crashing in GCC.
Are you saying that this program will crash when called?
I do not see this compiling with either gcc 12 or 13. We get a warning
when compiling but that is it:
crash.cpp: In function ‘int main()’:
crash.cpp:7:7: warning: ignoring return value of ‘bool
__gnu_debug::operator==(const
_Safe_iterator<std::__detail::_Node_iterator<int, true, false>,
std::__debug::unordered_set<int>, std::forward_iterator_tag>::_Self&,
const _Safe_iterator<std::__detail::_Node_iterator<int, true, false>,
std::__debug::unordered_set<int>, std::forward_iterator_tag>::_Self&)’,
declared with attribute ‘nodiscard’ [-Wunused-result]
7 | it == it;
| ~~~^~~~~
In file included from /usr/include/c++/12/debug/unordered_set:48,
from /usr/include/c++/12/unordered_set:52,
from crash.cpp:2:
/usr/include/c++/12/debug/safe_iterator.h:470:7: note: declared here
470 | operator==(const _Self& __lhs, const _Self& __rhs)
_GLIBCXX_NOEXCEPT
| ^~~~~~~~
--
José Abílio
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