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comparison clang/test/Sema/generic-selection.c @ 150:1d019706d866

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LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
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children c4bab56944e8
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147:c2174574ed3a 150:1d019706d866
1 // RUN: %clang_cc1 -std=c11 -fsyntax-only -verify %s
2 // RUN: %clang_cc1 -std=c99 -pedantic -fsyntax-only -verify=expected,ext %s
3
4 void g(void);
5
6 void foo(int n) {
7 (void) _Generic(0, // ext-warning {{'_Generic' is a C11 extension}}
8 struct A: 0, // expected-error {{type 'struct A' in generic association incomplete}}
9 void(): 0, // expected-error {{type 'void ()' in generic association not an object type}}
10 int[n]: 0); // expected-error {{type 'int [n]' in generic association is a variably modified type}}
11
12 (void) _Generic(0, // ext-warning {{'_Generic' is a C11 extension}}
13 void (*)(): 0, // expected-note {{compatible type 'void (*)()' specified here}}
14 void (*)(void): 0); // expected-error {{type 'void (*)(void)' in generic association compatible with previously specified type 'void (*)()'}}
15
16 (void) _Generic((void (*)()) 0, // expected-error {{controlling expression type 'void (*)()' compatible with 2 generic association types}} \
17 // ext-warning {{'_Generic' is a C11 extension}}
18 void (*)(int): 0, // expected-note {{compatible type 'void (*)(int)' specified here}}
19 void (*)(void): 0); // expected-note {{compatible type 'void (*)(void)' specified here}}
20
21 (void) _Generic(0, // expected-error {{controlling expression type 'int' not compatible with any generic association type}} \
22 // ext-warning {{'_Generic' is a C11 extension}}
23 char: 0, short: 0, long: 0);
24
25 int a1[_Generic(0, int: 1, short: 2, float: 3, default: 4) == 1 ? 1 : -1]; // ext-warning {{'_Generic' is a C11 extension}}
26 int a2[_Generic(0, default: 1, short: 2, float: 3, int: 4) == 4 ? 1 : -1]; // ext-warning {{'_Generic' is a C11 extension}}
27 int a3[_Generic(0L, int: 1, short: 2, float: 3, default: 4) == 4 ? 1 : -1]; // ext-warning {{'_Generic' is a C11 extension}}
28 int a4[_Generic(0L, default: 1, short: 2, float: 3, int: 4) == 1 ? 1 : -1]; // ext-warning {{'_Generic' is a C11 extension}}
29 int a5[_Generic(0, int: 1, short: 2, float: 3) == 1 ? 1 : -1]; // ext-warning {{'_Generic' is a C11 extension}}
30 int a6[_Generic(0, short: 1, float: 2, int: 3) == 3 ? 1 : -1]; // ext-warning {{'_Generic' is a C11 extension}}
31
32 int a7[_Generic("test", char *: 1, default: 2) == 1 ? 1 : -1]; // ext-warning {{'_Generic' is a C11 extension}}
33 int a8[_Generic(g, void (*)(void): 1, default: 2) == 1 ? 1 : -1]; // ext-warning {{'_Generic' is a C11 extension}}
34
35 const int i = 12;
36 int a9[_Generic(i, int: 1, default: 2) == 1 ? 1 : -1]; // ext-warning {{'_Generic' is a C11 extension}}
37
38 // This is expected to not trigger any diagnostics because the controlling
39 // expression is not evaluated.
40 (void)_Generic(*(int *)0, int: 1); // ext-warning {{'_Generic' is a C11 extension}}
41 }
42
43 int __attribute__((overloadable)) test (int);
44 double __attribute__((overloadable)) test (double);
45 char testc(char);
46
47 void PR30201(void) {
48 _Generic(4, char:testc, default:test)(4); // ext-warning {{'_Generic' is a C11 extension}}
49 }