| 1 | // RUN: %clang_cc1 -std=c++1y -S -o - -emit-llvm -verify %s |
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| 2 | |
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| 3 | namespace default_arg_temporary { |
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| 4 | |
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| 5 | constexpr bool equals(const float& arg = 1.0f) { |
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| 6 | return arg == 1.0f; |
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| 7 | } |
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| 8 | |
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| 9 | constexpr const int &x(const int &p = 0) { |
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| 10 | return p; |
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| 11 | } |
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| 12 | |
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| 13 | struct S { |
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| 14 | constexpr S(const int &a = 0) {} |
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| 15 | }; |
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| 16 | |
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| 17 | void test_default_arg2() { |
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| 18 | // This piece of code used to cause an assertion failure in |
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| 19 | // CallStackFrame::createTemporary because the same MTE is used to initilize |
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| 20 | // both elements of the array (see PR33140). |
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| 21 | constexpr S s[2] = {}; |
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| 22 | |
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| 23 | // This piece of code used to cause an assertion failure in |
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| 24 | // CallStackFrame::createTemporary because multiple CXXDefaultArgExpr share |
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| 25 | // the same MTE (see PR33140). |
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| 26 | static_assert(equals() && equals(), ""); |
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| 27 | |
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| 28 | // Test that constant expression evaluation produces distinct lvalues for |
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| 29 | // each call. |
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| 30 | static_assert(&x() != &x(), ""); |
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| 31 | } |
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| 32 | |
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| 33 | // Check that multiple CXXDefaultInitExprs don't cause an assertion failure. |
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| 34 | struct A { int &&r = 0; }; // expected-note 2{{default member initializer}} |
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| 35 | struct B { A x, y; }; |
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| 36 | B b = {}; // expected-warning 2{{not supported}} |
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| 37 | |
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| 38 | } |
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| 39 | |
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