https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104652
Bug ID: 104652
Summary: It's impossible to declare non-default target function
as a friend.
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: vorfeed.canal at gmail dot com
Target Milestone: ---
The following example generates error with GCC 11.2 and trunk:
https://godbolt.org/z/MKo9Whsf5
class Foo {
public:
explicit Foo(int f) : x(f) {}
friend inline Foo bar(Foo&);
private:
int x;
};
[[gnu::target("default")]] inline Foo bar(Foo& foo) {
return Foo(foo.x);
}
[[gnu::target("sse4.2")]] inline Foo bar(Foo& foo) {
return Foo(foo.x);
}
default-target function is friend while SSE4.2-function is not. And it doesn't
look like there are a way to declare it as friend.
