// This tests for [basic.lookup.argdep]/p4.2:
// Argument-dependent lookup finds all declarations of functions and function templates that
// - ...
// - are declared as a friend ([class.friend]) of any class with a reachable definition in the set of associated entities,
//
// RUN: rm -fr %t
// RUN: mkdir %t
// RUN: split-file %s %t
//
// RUN: %clang_cc1 -std=c++20 -emit-module-interface %t/Friend-in-reachable-class.cppm -o %t/X.pcm
// RUN: %clang_cc1 -std=c++20 -emit-reduced-module-interface %t/Friend-in-reachable-class.cppm \
// RUN: -o %t/X.reduced.pcm
// RUN: %clang_cc1 -std=c++20 -fmodule-file=X=%t/X.pcm %t/Use.cpp -verify -fsyntax-only
// RUN: %clang_cc1 -std=c++20 -fmodule-file=X=%t/X.reduced.pcm %t/Use.cpp -verify -fsyntax-only
//
//--- Friend-in-reachable-class.cppm
module;
# 3 __FILE__ 1
struct A {
friend int operator+(const A &lhs, const A &rhs) {
return 0;
}
};
# 6 "" 2
export module X;
export using ::A;
//--- Use.cpp
// expected-no-diagnostics
import X;
int use() {
A a, b;
return a + b;
}