https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120097
Bug ID: 120097
Summary: source_location line is wrong when used in an
initializer list
Product: gcc
Version: 14.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: eugene at hutorny dot in.ua
Target Milestone: ---
Created attachment 61294
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=61294&action=edit
Source file with all temps
When a std::source_location is instantiated within an initializer list using
default value via std::source_location::current(), it gets line number from the
initializer list, not from the item's line number.
When this example: (see also at https://godbolt.org/z/Wcsnsoe8E)
#include<source_location>
#include<iostream>
struct foo {
constexpr foo(std::source_location lo = std::source_location::current()) : l
{ lo } {}
std::source_location l;
};
constexpr std::initializer_list<foo> slc = {
{},
{},
{},
};
int main() {
for(auto i : slc) {
std::cout << i.l.file_name() << ':' << i.l.line() << '\n';
}
}
is built with clang or msvc, it prints different line numbers, corresponding to
list items. With gcc it prints onle line number corresponding the the end of
the list.
