Issue
I have link-time error when trying to compile following code with gcc 12.1.0. With clang, msvc and older gcc it compiles as expected.
template<typename T>
void def()
{}
template<void (*foobar)() = def<int>>
void bar()
{
foobar();
}
template<typename T>
void foo()
{
bar();
}
int main()
{
foo<int>();
}
Error: /usr/bin/ld: /tmp/cchkaKVw.o: in function `void bar<&(void def<int>())>()':
> main.cpp:(.text._Z3barIXadL_Z3defIiEvvEEEvv[_Z3barIXadL_Z3defIiEvvEEEvv]+0x5): undefined reference to `void def<int>()'
Is this a gcc regression or is there some problem with this code?
Solution
Reported this bug to GCC Bugzilla: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105848
Answered By - Kirillov Dmitriy Answer Checked By - Mary Flores (WPSolving Volunteer)