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9daf10ff8f
This fixes a crash when instantiating default arguments for templated friend function declarations which lack a definition. There are implementation limits which prevents us from finding the pattern for such functions, and this causes difficulties setting up the instantiation scope for the function parameters. This patch skips instantiating the default argument in these cases, which causes a minor regression in error recovery, but otherwise avoids the crash. The previous attempt #113777 accidentally skipped all default argument constructions, causing some regressions. This patch resolves that by moving the guard to InstantiateDefaultArgument() where the handling of templates takes place. Fixes https://github.com/llvm/llvm-project/issues/113324
88 lines
1.5 KiB
C++
88 lines
1.5 KiB
C++
// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
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// PR5484
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namespace PR5484 {
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struct A { };
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extern A a;
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void f(const A & = a);
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void g() {
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f();
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}
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}
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namespace GH113324 {
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struct S1 {
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friend void f(S1, int = 42) {}
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};
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void test() {
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S1 s1;
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f(s1);
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}
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};
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struct A1 {
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A1();
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~A1();
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};
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struct A2 {
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A2();
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~A2();
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};
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struct B {
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B(const A1& = A1(), const A2& = A2());
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};
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// CHECK-LABEL: define{{.*}} void @_Z2f1v()
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void f1() {
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// CHECK: call void @_ZN2A1C1Ev(
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// CHECK: call void @_ZN2A2C1Ev(
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// CHECK: call void @_ZN1BC1ERK2A1RK2A2(
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// CHECK: call void @_ZN2A2D1Ev
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// CHECK: call void @_ZN2A1D1Ev
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B bs[2];
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}
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struct C {
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B bs[2];
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C();
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};
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// CHECK-LABEL: define{{.*}} void @_ZN1CC2Ev(ptr {{[^,]*}} %this) unnamed_addr
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// CHECK: call void @_ZN2A1C1Ev(
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// CHECK: call void @_ZN2A2C1Ev(
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// CHECK: call void @_ZN1BC1ERK2A1RK2A2(
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// CHECK: call void @_ZN2A2D1Ev
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// CHECK: call void @_ZN2A1D1Ev
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// CHECK-LABEL: define{{.*}} void @_ZN1CC1Ev(ptr {{[^,]*}} %this) unnamed_addr
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// CHECK: call void @_ZN1CC2Ev(
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C::C() { }
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// CHECK-LABEL: define{{.*}} void @_Z2f3v()
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void f3() {
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// CHECK: call void @_ZN2A1C1Ev(
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// CHECK: call void @_ZN2A2C1Ev(
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// CHECK: call void @_ZN1BC1ERK2A1RK2A2(
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// CHECK: call void @_ZN2A2D1Ev
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// CHECK: call void @_ZN2A1D1Ev
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B *bs = new B[2];
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delete bs;
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}
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void f4() {
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void g4(int a, int b = 7);
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{
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void g4(int a, int b = 5);
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}
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void g4(int a = 5, int b);
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// CHECK: call void @_Z2g4ii(i32 noundef 5, i32 noundef 7)
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g4();
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}
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