forked from OSchip/llvm-project
125 lines
3.3 KiB
C++
125 lines
3.3 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -pedantic -std=c++98 -verify -triple x86_64-apple-darwin %s
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// RUN: %clang_cc1 -fsyntax-only -pedantic -std=c++11 -verify -triple x86_64-apple-darwin %s
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enum E { // expected-note{{previous definition is here}}
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Val1,
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Val2
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};
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enum E; // expected-warning{{redeclaration of already-defined enum 'E' is a GNU extension}}
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int& enumerator_type(int);
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float& enumerator_type(E);
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void f() {
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E e = Val1;
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float& fr = enumerator_type(Val2);
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}
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// <rdar://problem/6502934>
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typedef enum Foo {
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A = 0,
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B = 1
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} Foo;
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void bar() {
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Foo myvar = A;
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myvar = B;
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}
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/// PR3688
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struct s1 {
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enum e1 (*bar)(void); // expected-error{{ISO C++ forbids forward references to 'enum' types}}
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};
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enum e1 { YES, NO };
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static enum e1 badfunc(struct s1 *q) {
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return q->bar();
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}
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enum e2; // expected-error{{ISO C++ forbids forward references to 'enum' types}}
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namespace test1 {
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template <class A, class B> struct is_same { static const int value = -1; };
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template <class A> struct is_same<A,A> { static const int value = 1; };
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enum enum0 { v0 };
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int test0[is_same<__typeof(+v0), int>::value];
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enum enum1 { v1 = __INT_MAX__ };
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int test1[is_same<__typeof(+v1), int>::value];
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enum enum2 { v2 = __INT_MAX__ * 2U };
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int test2[is_same<__typeof(+v2), unsigned int>::value];
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enum enum3 { v3 = __LONG_MAX__ };
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int test3[is_same<__typeof(+v3), long>::value];
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enum enum4 { v4 = __LONG_MAX__ * 2UL };
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int test4[is_same<__typeof(+v4), unsigned long>::value];
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}
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// PR6061
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namespace PR6061 {
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struct A { enum { id }; };
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struct B { enum { id }; };
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struct C : public A, public B
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{
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enum { id };
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};
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}
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namespace Conditional {
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enum a { A }; a x(const enum a x) { return 1?x:A; }
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}
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namespace PR7051 {
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enum E { e0 };
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void f() {
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E e;
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e = 1; // expected-error{{assigning to 'PR7051::E' from incompatible type 'int'}}
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e |= 1; // expected-error{{assigning to 'PR7051::E' from incompatible type 'int'}}
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}
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}
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// PR7466
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enum { }; // expected-warning{{declaration does not declare anything}}
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typedef enum { }; // expected-warning{{typedef requires a name}}
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// PR7921
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enum PR7921E {
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PR7921V = (PR7921E)(123)
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#if __cplusplus < 201103L
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// expected-error@-2 {{expression is not an integral constant expression}}
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#else
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// expected-error@-4 {{must have integral or unscoped enumeration type}}
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// FIXME: The above diagnostic isn't very good; we should instead complain about the type being incomplete.
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#endif
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};
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void PR8089() {
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enum E; // expected-error{{ISO C++ forbids forward references to 'enum' types}}
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int a = (E)3; // expected-error{{cannot initialize a variable of type 'int' with an rvalue of type 'E'}}
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}
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// This is accepted as a GNU extension. In C++98, there was no provision for
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// expressions with UB to be non-constant.
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enum { overflow = 123456 * 234567 };
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#if __cplusplus >= 201103L
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// expected-warning@-2 {{not an integral constant expression}}
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// expected-note@-3 {{value 28958703552 is outside the range of representable values}}
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#else
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// expected-warning@-5 {{overflow in expression; result is -1106067520 with type 'int'}}
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#endif
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// PR28903
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struct PR28903 {
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enum {
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PR28903_A = (enum { // expected-error-re {{'PR28903::(anonymous enum at {{.*}})' cannot be defined in an enumeration}}
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PR28903_B,
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PR28903_C = PR28903_B
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})
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};
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};
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