gnu-flags.c revision e85baa92c8b6d68c254e33934397d4883fc12aef 
1// RUN: %clang_cc1 -fsyntax-only -verify %s -DALIGNOF
2// RUN: %clang_cc1 -fsyntax-only -verify %s -DALL -Wgnu
3// RUN: %clang_cc1 -fsyntax-only -verify %s -DALL \
4// RUN:   -Wgnu-alignof-expression -Wgnu-case-range -Wgnu-complex-integer -Wgnu-conditional-omitted-operand \
5// RUN:   -Wgnu-empty-initializer -Wgnu-label-as-value -Wgnu-statement-expression
6// RUN: %clang_cc1 -fsyntax-only -verify %s -DNONE -Wgnu \
7// RUN:   -Wno-gnu-alignof-expression -Wno-gnu-case-range -Wno-gnu-complex-integer -Wno-gnu-conditional-omitted-operand \
8// RUN:   -Wno-gnu-empty-initializer -Wno-gnu-label-as-value -Wno-gnu-statement-expression
9// RUNNOT: %clang_cc1 -fsyntax-only -verify %s -DALIGNOF -Wgnu-alignof-expression
10// RUNNOT: %clang_cc1 -fsyntax-only -verify %s -DNONE -Wno-gnu-alignof-expression
11// RUNNOT: %clang_cc1 -fsyntax-only -verify %s -DALIGNOF -DCASERANGE -Wgnu-case-range
12// RUNNOT: %clang_cc1 -fsyntax-only -verify %s -DALIGNOF -DCOMPLEXINT -Wgnu-complex-integer
13// RUNNOT: %clang_cc1 -fsyntax-only -verify %s -DALIGNOF -DOMITTEDOPERAND -Wgnu-conditional-omitted-operand
14// RUNNOT: %clang_cc1 -fsyntax-only -verify %s -DALIGNOF -DEMPTYINIT -Wgnu-empty-initializer
15// RUNNOT: %clang_cc1 -fsyntax-only -verify %s -DALIGNOF -DLABELVALUE -Wgnu-label-as-value
16// RUNNOT: %clang_cc1 -fsyntax-only -verify %s -DALIGNOF -DSTATEMENTEXP -Wgnu-statement-expression
17
18#if NONE
19// expected-no-diagnostics
20#endif
21
22
23#ifdef __s390x__
24#define EXPECTED_ALIGN 2
25#else
26#define EXPECTED_ALIGN 1
27#endif
28
29#if ALL || ALIGNOF
30// expected-warning@+4 {{'_Alignof' applied to an expression is a GNU extension}}
31#endif
32
33char align;
34_Static_assert(_Alignof(align) == EXPECTED_ALIGN, "align's alignment is wrong");
35
36
37#if ALL || CASERANGE
38// expected-warning@+5 {{use of GNU case range extension}}
39#endif
40
41void caserange(int x) {
42  switch (x) {
43  case 42 ... 44: ;
44  }
45}
46
47
48#if ALL || COMPLEXINT
49// expected-warning@+3 {{complex integer types are a GNU extension}}
50#endif
51
52_Complex short int complexint;
53
54
55#if ALL || OMITTEDOPERAND
56// expected-warning@+3 {{use of GNU ?: conditional expression extension, omitting middle operand}}
57#endif
58
59static const char* omittedoperand = (const char*)0 ?: "Null";
60
61
62#if ALL || EMPTYINIT
63// expected-warning@+3 {{use of GNU empty initializer extension}}
64#endif
65
66struct { int x; } emptyinit = {};
67
68
69#if ALL || LABELVALUE
70// expected-warning@+6 {{use of GNU address-of-label extension}}
71// expected-warning@+7 {{use of GNU indirect-goto extension}}
72#endif
73
74void labelvalue() {
75	void *ptr;
76	ptr = &&foo;
77foo:
78	goto *ptr;
79}
80
81#if ALL || STATEMENTEXP
82// expected-warning@+5 {{use of GNU statement expression extension}}
83#endif
84
85void statementexp()
86{
87	int a = ({ 1; });
88}
89