https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107741
Bug ID: 107741
Summary: Missed member variable name in mangling of externally
visible lambdas used in inline initialization of
static members
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: dblaikie at gmail dot com
Target Milestone: ---
https://godbolt.org/z/7514cTh5o
```
struct A {
static constexpr auto x = [] {
return 1;
};
};
template <typename>
struct B {
static constexpr auto x = [] {
return 1;
};
};
template <typename T>
struct C {
static int x;
};
void side_effect();
template <typename T>
int C<T>::x = (side_effect(), [] { return 1; }());
template int C<int>::x;
void f() {
A::x();
B<int>::x();
}
```
GCC produces these manglings:
```
A::{lambda()#1}::operator()() const
_ZNK1AUlvE_clEv
B<int>::{lambda()#3}::operator()() const
_ZNK1BIiEUlvE1_clEv
C<int>::x::{lambda()#1}::operator()() const
_ZNK1CIiE1xMUlvE_clEv
```
I believe in the first two cases, the member variable scope ("::x") is missing.
Oh, and it looks like the lambda numbering is off - B's lambda is 1 within its
scope (either the type or the member) - so I guess that needs to be fixed
too/scoping the numbering to within the member along with the mangling having
that scoping.
