https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105593
--- Comment #6 from Rogério de Souza Moraes <rogerio.souza at gmail dot com> ---
I got another example with similar warning:
#################
#include <iostream>
//#pragma GCC diagnostic push
//#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#include <regex>
//#pragma GCC diagnostic pop
#include <string>
namespace sysOs
{
std::regex rgxVer("ABC");
}
int main()
{
return 0;
}
#######################
The code above is available at https://godbolt.org/z/chsjPKE33.
Compiled with:
gcc -c -fPIC -Werror -std=c++2a -Wno-unused -O -Wall
it returns the warning:
/opt/compiler-explorer/gcc-12.1.0/include/c++/12.1.0/bits/std_function.h:405:42:
error: '*(std::function<bool(char)>*)((char*)&__tmp +
offsetof(std::__detail::_StateT,
std::__detail::_State<char>::<unnamed>.std::__detail::_State_base::<unnamed>)).std::function<bool(char)>::_M_invoker'
may be used uninitialized [-Werror=maybe-uninitialized]
405 | : _Function_base(), _M_invoker(__x._M_invoker)
| ~~~~^~~~~~~~~~
Would it be related with the same issue reported here? This example does not
raise the warning on GCC 11.3.
Regards,
--
Rogerio
