https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104919
Bug ID: 104919
Summary: [modules] enum in constexpr function causes "failed to
read compiled module cluster 1: Bad file data"
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: ensadc at mailnesia dot com
Target Milestone: ---
https://godbolt.org/z/d3sdeEz1r
====
$ cat mod.cpp
export module mod;
export constexpr void f() {
enum { a };
a;
}
$ cat example.cpp
import mod;
int main() {
f();
}
$ g++ -std=c++20 -fmodules-ts mod.cpp example.cpp
In module imported at example.cpp:1:1:
mod: In function ‘int main()’:
mod: error: failed to read compiled module cluster 1: Bad file data
mod: note: compiled module file is ‘gcm.cache/mod.gcm’
example.cpp:4:5: fatal error: failed to load binding ‘::f@mod’
4 | f();
| ^
compilation terminated.
====
It compiles fine without `constexpr`.
