1// RUN: rm -rf %t 2// RUN: mkdir -p %t 3// RUN: split-file %s %t 4// 5// RUN: %clang_cc1 -std=c++20 %t/a.cppm -fsyntax-only -verify 6 7//--- foo.h 8extern "C++" void c_func(); 9 10//--- a.cppm 11// expected-no-diagnostics 12module; 13#include "foo.h" 14export module a; 15export extern "C++" void foo() {} 16extern "C++" void bar() {} 17export extern "C" void foo_c() {} 18extern "C" void bar_c() {} 19export void a() { 20 foo(); 21 bar(); 22 foo_c(); 23 bar_c(); 24 c_func(); 25} 26