https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102607
Bug ID: 102607
Summary: [modules] option -g results in undefined reference to
`typeinfo for type`
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: link-failure
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: johelegp at gmail dot com
CC: johelegp at gmail dot com
Target Milestone: ---
See https://godbolt.org/z/qP6EPWhEz.
mod.cpp:
```C++
export module mod;
export struct B {
virtual ~B() = default;
};
```
main.cpp:
```C++
import mod;
int main() {
struct D : B {};
(void)D{};
}
```
Commands:
```
g++ -std=c++23 -fmodules-ts -g -c mod.cpp
g++ -std=c++23 -fmodules-ts -g -c main.cpp
g++ mod.o main.o
```
Output:
```
/usr/bin/ld: main.o:(.data.rel.ro+0x8): undefined reference to `typeinfo for B'
/usr/bin/ld: main.o:(.data.rel.ro+0x30): undefined reference to `typeinfo for
B'
collect2: error: ld returned 1 exit status
```
