1 // RUN: %clang_cc1 -triple %itanium_abi_triple %s -fsyntax-only -verify -pedantic
2 enum e {A,
3 B = 42LL << 32, // expected-warning {{ISO C restricts enumerator values to range of 'int'}}
4 C = -4, D = 12456 };
5
6 enum f { a = -2147483648, b = 2147483647 }; // ok.
7
8 enum g { // too negative
9 c = -2147483649, // expected-warning {{ISO C restricts enumerator values to range of 'int'}}
10 d = 2147483647 };
11 enum h { e = -2147483648, // too pos
12 f = 2147483648, // expected-warning {{ISO C restricts enumerator values to range of 'int'}}
13 i = 0xFFFF0000 // expected-warning {{too large}}
14 };
15
16 // minll maxull
17 enum x // expected-warning {{enumeration values exceed range of largest integer}}
18 { y = -9223372036854775807LL-1, // expected-warning {{ISO C restricts enumerator values to range of 'int'}}
19 z = 9223372036854775808ULL }; // expected-warning {{ISO C restricts enumerator values to range of 'int'}}
20
test()21 int test() {
22 return sizeof(enum e) ;
23 }
24
25 enum gccForwardEnumExtension ve; // expected-warning{{ISO C forbids forward references to 'enum' types}} \
26 // expected-error{{tentative definition has type 'enum gccForwardEnumExtension' that is never completed}} \
27 // expected-note{{forward declaration of 'enum gccForwardEnumExtension'}}
28
test2(int i)29 int test2(int i)
30 {
31 ve + i; // expected-error{{invalid operands to binary expression}}
32 }
33
34 // PR2020
35 union u0; // expected-note {{previous use is here}}
36 enum u0 { U0A }; // expected-error {{use of 'u0' with tag type that does not match previous declaration}}
37
38
39 // rdar://6095136
40 extern enum some_undefined_enum ve2; // expected-warning {{ISO C forbids forward references to 'enum' types}}
41
test4()42 void test4() {
43 for (; ve2;) // expected-error {{statement requires expression of scalar type}}
44 ;
45 (_Bool)ve2; // expected-error {{arithmetic or pointer type is required}}
46
47 for (; ;ve2) // expected-warning {{expression result unused}}
48 ;
49 (void)ve2;
50 ve2; // expected-warning {{expression result unused}}
51 }
52
53 // PR2416
54 enum someenum {}; // expected-error {{use of empty enum}}
55
56 // <rdar://problem/6093889>
57 enum e0 { // expected-note {{previous definition is here}}
58 E0 = sizeof(enum e0 { E1 }), // expected-error {{nested redefinition}}
59 };
60
61 // PR3173
62 enum { PR3173A, PR3173B = PR3173A+50 };
63
64 // PR2753
foo()65 void foo() {
66 enum xpto; // expected-warning{{ISO C forbids forward references to 'enum' types}}
67 enum xpto; // expected-warning{{ISO C forbids forward references to 'enum' types}}
68 }
69
70 // <rdar://problem/6503878>
71 typedef enum { X = 0 }; // expected-warning{{typedef requires a name}}
72
73
74 enum NotYetComplete { // expected-note{{definition of 'enum NotYetComplete' is not complete until the closing '}'}}
75 NYC1 = sizeof(enum NotYetComplete) // expected-error{{invalid application of 'sizeof' to an incomplete type 'enum NotYetComplete'}}
76 };
77
78 /// PR3688
79 struct s1 {
80 enum e1 (*bar)(void); // expected-warning{{ISO C forbids forward references to 'enum' types}}
81 };
82
83 enum e1 { YES, NO };
84
badfunc(struct s1 * q)85 static enum e1 badfunc(struct s1 *q) {
86 return q->bar();
87 }
88
89
90 // Make sure we don't a.k.a. anonymous enums.
91 typedef enum {
92 an_enumerator = 20
93 } an_enum;
94 char * s = (an_enum) an_enumerator; // expected-warning {{incompatible integer to pointer conversion initializing 'char *' with an expression of type 'an_enum'}}
95
96 // PR4515
97 enum PR4515 {PR4515a=1u,PR4515b=(PR4515a-2)/2};
98 int CheckPR4515[PR4515b==0?1:-1];
99
100 // PR7911
101 extern enum PR7911T PR7911V; // expected-warning{{ISO C forbids forward references to 'enum' types}}
PR7911F()102 void PR7911F() {
103 switch (PR7911V); // expected-error {{statement requires expression of integer type}}
104 }
105
106 char test5[__has_feature(enumerator_attributes) ? 1 : -1];
107
108 // PR8694
109 // rdar://8707031
PR8694(int * e)110 void PR8694(int* e) // expected-note {{passing argument to parameter 'e' here}}
111 {
112 }
113
crash(enum E * e)114 void crash(enum E* e) // expected-warning {{declaration of 'enum E' will not be visible outside of this function}} \
115 // expected-warning {{ISO C forbids forward references to 'enum' types}}
116 {
117 PR8694(e); // expected-warning {{incompatible pointer types passing 'enum E *' to parameter of type 'int *'}}
118 }
119
120 typedef enum { NegativeShort = (short)-1 } NegativeShortEnum;
121 int NegativeShortTest[NegativeShort == -1 ? 1 : -1];
122
123 // PR24610
124 enum Color { Red, Green, Blue }; // expected-note{{previous use is here}}
125 typedef struct Color NewColor; // expected-error {{use of 'Color' with tag type that does not match previous declaration}}
126
127 // PR28903
128 // In C it is valid to define tags inside enums.
129 struct PR28903 {
130 enum {
131 PR28903_A = (enum {
132 PR28903_B,
133 PR28903_C = PR28903_B
134 })0
135 };
136 int makeStructNonEmpty;
137 };
138
139 static int EnumRedecl; // expected-note 2 {{previous definition is here}}
140 struct S {
141 enum {
142 EnumRedecl = 4 // expected-error {{redefinition of 'EnumRedecl'}}
143 } e;
144 };
145
146 union U {
147 enum {
148 EnumRedecl = 5 // expected-error {{redefinition of 'EnumRedecl'}}
149 } e;
150 };
151
152 enum PR15071 {
153 PR15071_One // expected-note {{previous definition is here}}
154 };
155
156 struct EnumRedeclStruct {
157 enum {
158 PR15071_One // expected-error {{redefinition of enumerator 'PR15071_One'}}
159 } e;
160 };
161