https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99013
Bug ID: 99013
Summary: std::source_location::function_name should return same
result in constexpr mode and non-constexpr
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: hanicka at hanicka dot net
Target Milestone: ---
Hi found out std::source_location is returning different result in constexpr:
```
#include <source_location>
template<auto Object>
constexpr std::string_view get_object_name1()
{
/*constexpr*/ const char * ptr =
std::source_location::current().function_name();
return ptr;
}
template<auto Object>
constexpr std::string_view get_object_name2()
{
constexpr const char * ptr =
std::source_location::current().function_name();
return ptr;
}
void foo() { }
```
when called `get_object_name1<foo>` it returns `constexpr std::string_view
get_object_name1() [with auto Object = foo; std::string_view =
std::basic_string_view<char>]`
but when called `get_object_name2<foo>` it returns `constexpr std::string_view
get_object_name2()`
the difference is the BUG (missing `[with auto Object = foo; std::string_view =
std::basic_string_view<char>]`)
error with latest trunk on compiler-explorer.com
https://compiler-explorer.com/z/4e8Gd1
