| 1 | // RUN: %clang_cc1 -fsyntax-only -verify -pedantic %s |
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| 2 | |
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| 3 | union u { int i; unsigned : 3; }; |
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| 4 | void f(union u); |
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| 5 | |
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| 6 | void test(int x) { |
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| 7 | f((union u)x); // expected-warning {{cast to union type is a GNU extension}} |
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| 8 | f((union u)&x); // expected-error {{cast to union type from type 'int *' not present in union}} |
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| 9 | f((union u)2U); // expected-error {{cast to union type from type 'unsigned int' not present in union}} |
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| 10 | } |
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| 11 | |
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| 12 | union u w = (union u)2; // expected-warning {{cast to union type is a GNU extension}} |
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| 13 | union u ww = (union u)1.0; // expected-error{{cast to union type from type 'double' not present in union}} |
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| 14 | union u x = 7; // expected-error{{initializing 'union u' with an expression of incompatible type 'int'}} |
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| 15 | int i; |
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| 16 | union u zz = (union u)i; // expected-error{{initializer element is not a compile-time constant}} expected-warning {{cast to union type is a GNU extension}} |
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| 17 | |
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| 18 | struct s {int a, b;}; |
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| 19 | struct s y = { 1, 5 }; |
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| 20 | struct s z = (struct s){ 1, 5 }; |
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| 21 | |
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