duplicate-mangled-name.cpp
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// RUN: %clang_cc1 -triple %itanium_abi_triple -emit-llvm-only %s -verify -DTEST1
// RUN: %clang_cc1 -triple %itanium_abi_triple -emit-llvm-only %s -verify -DTEST2 -emit-llvm -o - | FileCheck %s
// RUN: %clang_cc1 -triple %itanium_abi_triple -emit-llvm-only %s -verify -DTEST3
// RUN: %clang_cc1 -triple %itanium_abi_triple -emit-llvm-only %s -verify -DTEST4
#ifdef TEST1
// rdar://15522601
class MyClass {
static void meth();
};
void MyClass::meth() { } // expected-note {{previous}}
extern "C" {
void _ZN7MyClass4methEv() { } // expected-error {{definition with same mangled name '_ZN7MyClass4methEv' as another definition}}
}
#elif TEST2
// expected-no-diagnostics
// We expect no warnings here, as there is only declaration of _ZN1TD1Ev
// function, no definitions.
extern "C" void _ZN1TD1Ev();
struct T {
~T() {}
};
// We expect no warnings here, as there is only declaration of _ZN2nm3abcE
// global, no definitions.
extern "C" {
int _ZN2nm3abcE;
}
namespace nm {
float abc = 2;
}
// CHECK: @_ZN2nm3abcE = {{(dso_local )?}}global float
float foo() {
_ZN1TD1Ev();
// CHECK: call void bitcast ({{.*}} (%struct.T*)* @_ZN1TD1Ev to void ()*)()
T t;
// CHECK: call {{.*}} @_ZN1TD1Ev(%struct.T* %t)
return _ZN2nm3abcE + nm::abc;
}
#elif TEST3
extern "C" void _ZN2T2D2Ev() {}; // expected-note {{previous definition is here}}
struct T2 {
~T2() {} // expected-error {{definition with same mangled name '_ZN2T2D2Ev' as another definition}}
};
void foo() {
_ZN2T2D2Ev();
T2 t;
}
#elif TEST4
extern "C" {
int _ZN2nm3abcE = 1; // expected-note {{previous definition is here}}
}
namespace nm {
float abc = 2; // expected-error {{definition with same mangled name '_ZN2nm3abcE' as another definition}}
}
float foo() {
return _ZN2nm3abcE + nm::abc;
}
#else
#error Unknown test
#endif