llvm-project/clang/test/PCH/pragma-weak-functional.h

// Header for PCH test pragma-weak-functional.c

#pragma weak undecfunc_alias2 = undecfunc
#pragma weak undecfunc_alias4 = undecfunc_alias1
#pragma weak undecfunc_alias3 = undecfunc_alias1
#pragma weak undecfunc_alias1 = undecfunc