https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125775
Bug ID: 125775
Summary: Precompiled header is not used when -Wpedantic is
enabled
Product: gcc
Version: 16.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: maxxdem2020 at gmail dot com
Target Milestone: ---
Created attachment 64727
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=64727&action=edit
pch.ii and a-main.ii produced from the 2 commands
Running the following 2 commands:
g++ -v pch.hpp -c
g++ -save-temps main.cpp -include pch.hpp -Wall -Wextra -Wpedantic
-Winvalid-pch
Produces the following warning:
cc1plus: warning: ./pch.hpp.gch: not used because ‘__cpp_runtime_arrays’ not
defined [-Winvalid-pch]
However, removing -Wpedantic from the 2nd command OR adding -save-temps to the
1st command makes the warning go away and the PCH seems to be used.
main.cpp and pch.hpp are just this:
// main.cpp
int main() {
return 0;
}
// pch.hpp
#include <iostream>
