https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98386
Bug ID: 98386
Summary: C++20 module: file exists failure and success happen
alternatively for windows.
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: unlvsur at live dot com
Target Milestone: ---
D:\Desktop\module>g++ -c main.cc -Ofast -std=c++20 -s -flto -fmodules-ts
-march=native
D:\Desktop\module>g++ -c hello.cc -Ofast -std=c++20 -s -flto -fmodules-ts
-march=native
hello.cc:4:8: error: failed to write compiled module: File exists
4 | export module hello;
| ^~~~~~
hello.cc:4:8: note: compiled module file is 'gcm.cache/hello.gcm'
D:\Desktop\module>g++ -c hello.cc -Ofast -std=c++20 -s -flto -fmodules-ts
-march=native
D:\Desktop\module>g++ -c hello.cc -Ofast -std=c++20 -s -flto -fmodules-ts
-march=native
hello.cc:4:8: error: failed to write compiled module: File exists
4 | export module hello;
| ^~~~~~
hello.cc:4:8: note: compiled module file is 'gcm.cache/hello.gcm'
D:\Desktop\module>g++ -c hello.cc -Ofast -std=c++20 -s -flto -fmodules-ts
-march=native
D:\Desktop\module>g++ -c hello.cc -Ofast -std=c++20 -s -flto -fmodules-ts
-march=native
hello.cc:4:8: error: failed to write compiled module: File exists
4 | export module hello;
| ^~~~~~
hello.cc:4:8: note: compiled module file is 'gcm.cache/hello.gcm'
You have a succ-error-succ-error loop. It must be something bugged here.
