47 lines
1007 B
C++
47 lines
1007 B
C++
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// Check that initialization of the only one memcpy-able struct member will not
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// be performed twice after successful non-trivial initializtion of the second
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// member.
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//
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// RUN: %clang_cc1 -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -O0 -fno-elide-constructors -emit-llvm %s -o - | FileCheck %s
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int globId = 0;
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struct ImplicitCopy {
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int id;
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ImplicitCopy() { id = 10; }
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~ImplicitCopy() { id = 20; }
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};
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struct ExplicitCopy {
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int id;
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ExplicitCopy() { id = 15; }
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ExplicitCopy(const ExplicitCopy &x) { id = 25; }
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~ExplicitCopy() { id = 35; }
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};
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struct Container {
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ImplicitCopy o1; // memcpy-able member.
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ExplicitCopy o2; // non-trivial initialization.
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Container() { globId = 1000; }
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~Container() { globId = 2000; }
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};
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int main() {
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try {
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Container c1;
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// CHECK-DAG: call void @llvm.memcpy
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// CHECK-DAG: declare void @llvm.memcpy
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// CHECK-NOT: @llvm.memcpy
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Container c2(c1);
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return 2;
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}
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catch (...) {
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return 1;
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}
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return 0;
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}
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