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27 lines
689 B
27 lines
689 B
4 months ago
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// RUN: %clang_cc1 -I%S %s -triple x86_64-apple-darwin10 -emit-llvm -fcxx-exceptions -fexceptions -std=c++11 -o - | FileCheck %s
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struct A { virtual ~A(); };
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struct B final : A { };
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struct C { virtual ~C(); int c; };
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// CHECK: @_Z1fP1B
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C *f(B* b) {
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// CHECK-NOT: call i8* @__dynamic_cast
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// CHECK: ret %struct.C* null
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return dynamic_cast<C*>(b);
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}
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// CHECK: @_Z1fR1B
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C &f(B& b) {
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// CHECK-NOT: call i8* @__dynamic_cast
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// CHECK: call void @__cxa_bad_cast() [[NR:#[0-9]+]]
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// CHECK: ret %struct.C* undef
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return dynamic_cast<C&>(b);
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}
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void dont_crash() {
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(void) dynamic_cast<void*>((A*)0);
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(void) dynamic_cast<void*>((B*)0);
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}
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// CHECK: attributes [[NR]] = { noreturn }
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