57 lines
2.0 KiB
C++
57 lines
2.0 KiB
C++
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// RUN: %clang_cc1 -triple x86_64-apple-darwin10.0.0 -fsyntax-only -verify %s
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template<typename T> int force_same(T, T);
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// C++ [dcl.enum]p5:
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// [...] If the underlying type is not fixed, the type of each enumerator is
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// the type of its initializing value:
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// - If an initializer is specified for an enumerator, the initializing
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// value has the same type as the expression.
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enum Bullet1 {
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Bullet1Val1 = 'a',
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Bullet1Val2 = 10u,
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Bullet1Val1IsChar = sizeof(force_same(Bullet1Val1, char(0))),
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Bullet1Val2IsUnsigned = sizeof(force_same(Bullet1Val2, unsigned(0)))
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};
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// - If no initializer is specified for the first enumerator, the
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// initializing value has an unspecified integral type.
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enum Bullet2 {
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Bullet2Val,
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Bullet2ValIsInt = sizeof(force_same(Bullet2Val, int(0)))
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};
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// - Otherwise the type of the initializing value is the same as the type
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// of the initializing value of the preceding enumerator unless the
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// incremented value is not representable in that type, in which case the
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// type is an unspecified integral type sufficient to contain the
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// incremented value. If no such type exists, the program is ill-formed.
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enum Bullet3a {
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Bullet3aVal1 = 17,
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Bullet3aVal2,
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Bullet3aVal2IsInt = sizeof(force_same(Bullet3aVal2, int(0))),
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Bullet3aVal3 = 2147483647,
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Bullet3aVal3IsInt = sizeof(force_same(Bullet3aVal3, int(0))),
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Bullet3aVal4,
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Bullet3aVal4IsUnsigned = sizeof(force_same(Bullet3aVal4, 0ul))
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};
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enum Bullet3b {
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Bullet3bVal1 = 17u,
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Bullet3bVal2,
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Bullet3bVal2IsInt = sizeof(force_same(Bullet3bVal2, 0u)),
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Bullet3bVal3 = 2147483647u,
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Bullet3bVal3IsInt = sizeof(force_same(Bullet3bVal3, 0u)),
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Bullet3bVal4,
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Bullet3bVal4IsUnsigned = sizeof(force_same(Bullet3bVal4, 0ul))
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};
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enum Bullet3c {
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Bullet3cVal1 = 0xFFFFFFFFFFFFFFFEull,
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Bullet3cVal2,
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Bullet3cVal3 // expected-warning{{not representable}}
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};
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// Following the closing brace of an enum-specifier, each enumerator has the
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// type of its enumeration.
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int array0[sizeof(force_same(Bullet3bVal3, Bullet3b(0)))? 1 : -1];
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