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765d8a1921
If a union has explicit initializers for some members, we shouldn't delete its default constructor. Fixes https://github.com/llvm/llvm-project/issues/48416. Reviewed By: erichkeane Differential Revision: https://reviews.llvm.org/D145851
38 lines
955 B
C++
38 lines
955 B
C++
// RUN: %clang_cc1 --std=c++17 -emit-llvm %s -o - -triple x86_64-unknown-linux-gnu | FileCheck %s
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struct non_trivial_constructor {
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constexpr non_trivial_constructor() : x(100) { }
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int x;
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};
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union UnionInt {
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int a{1000};
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non_trivial_constructor b;
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};
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union UnionNonTrivial {
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int a;
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non_trivial_constructor b{};
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};
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void f() {
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UnionInt u1;
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UnionNonTrivial u2;
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}
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// CHECK: define dso_local void @_Z1fv()
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// CHECK: call void @_ZN8UnionIntC1Ev
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// CHECK-NEXT: call void @_ZN15UnionNonTrivialC1Ev
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// CHECK: define {{.*}}void @_ZN8UnionIntC1Ev
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// CHECK: call void @_ZN8UnionIntC2Ev
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// CHECK: define {{.*}}void @_ZN15UnionNonTrivialC1Ev
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// CHECK: call void @_ZN15UnionNonTrivialC2Ev
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// CHECK: define {{.*}}void @_ZN8UnionIntC2Ev
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// CHECK: store i32 1000
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// CHECK: define {{.*}}void @_ZN15UnionNonTrivialC2Ev
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// CHECK: call void @_ZN23non_trivial_constructorC1Ev
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