llvm-project/clang/test/Modules/macro-redefinition.cpp

28 lines
715 B
C++

// RUN: %clang_cc1 -fmodules -x c++-module-map %s -fmodule-name=__usr_include -verify
// RUN: %clang_cc1 -fmodules -x c++-module-map %s -fmodule-name=__usr_include -verify -DIMPORT
module __usr_include {
module stddef {}
module stdlib {}
}
#pragma clang module contents
// expected-no-diagnostics
#pragma clang module begin __usr_include.stddef
#define NULL 0
#pragma clang module end
#pragma clang module begin __usr_include.stdlib
#ifdef IMPORT
#pragma clang module import __usr_include.stddef
#else
#pragma clang module begin __usr_include.stddef
#define NULL 0
#pragma clang module end
#endif
void *f() { return NULL; } // ok, NULL is visible here
#pragma clang module end