clang/test/CodeGenCXX/header-unit-friend-within-class-linkage.cpp

   1 // Tests that the friend function with-in an class definition in the header unit is still implicit inline.
   2 // RUN: rm -rf %t
   3 // RUN: split-file %s %t
   4 //
   5 // RUN: %clang_cc1 -std=c++20 -triple %itanium_abi_triple -xc++-user-header -emit-header-unit %t/foo.h -o %t/foo.pcm
   6 // RUN: %clang_cc1 -std=c++20 -triple %itanium_abi_triple -fmodule-file=%t/foo.pcm %t/user.cpp \
   7 // RUN:   -S -emit-llvm -disable-llvm-passes -o - | FileCheck %t/user.cpp
   8
   9 //--- foo.h
  10 class foo {
  11     int value;
  12 public:
  13     foo(int v) : value(v) {}
  14
  15     friend int getFooValue(foo f) {
  16         return f.value;
  17     }
  18 };
  19
  20 //--- user.cpp
  21 import "foo.h";
  22 int use() {
  23     foo f(43);
  24     return getFooValue(f);
  25 }
  26
  27 // CHECK: define{{.*}}linkonce_odr{{.*}}@_Z11getFooValue3foo