warn-strict-prototypes.c source code [clang_source_code/test/Sema/warn-strict-prototypes.c]

1	// RUN: %clang_cc1 -triple i386-pc-unknown -fsyntax-only -Wstrict-prototypes -verify %s
2	// RUN: %clang_cc1 -triple i386-pc-unknown -fsyntax-only -Wstrict-prototypes -fdiagnostics-parseable-fixits %s 2>&1 \| FileCheck %s
3
4	// function declaration with unspecified params
5	void foo1(); // expected-warning {{this function declaration is not a prototype}}
6	// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:11}:"void"
7	// function declaration with 0 params
8	void foo2(void);
9
10	// function definition with 0 params(for both cases),
11	// valid according to 6.7.5.3/14
12	void foo1() {}
13	void foo2(void) {}
14
15	// function type typedef unspecified params
16	typedef void foo3(); // expected-warning {{this function declaration is not a prototype}}
17	// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:19-[[@LINE-1]]:19}:"void"
18
19	// global fp unspecified params
20	void (*foo4)(); // expected-warning {{this function declaration is not a prototype}}
21	// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:14-[[@LINE-1]]:14}:"void"
22
23	// struct member fp unspecified params
24	struct { void (*foo5)(); } s; // expected-warning {{this function declaration is not a prototype}}
25	// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:23-[[@LINE-1]]:23}:"void"
26
27	// param fp unspecified params
28	void bar2(void (*foo6)()) { // expected-warning {{this function declaration is not a prototype}}
29	// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:24-[[@LINE-1]]:24}:"void"
30	// local fp unspecified params
31	void (*foo7)() = 0; // expected-warning {{this function declaration is not a prototype}}
32	// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:16-[[@LINE-1]]:16}:"void"
33	// array fp unspecified params
34	void (*foo8[2])() = {0}; // expected-warning {{this function declaration is not a prototype}}
35	// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:19-[[@LINE-1]]:19}:"void"
36	}
37
38	// function type cast using using an anonymous function declaration
39	void bar3(void) {
40	// casting function w/out prototype to unspecified params function type
41	(void)(void(*)()) foo1; // expected-warning {{this function declaration is not a prototype}}
42	// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:18-[[@LINE-1]]:18}:"void"
43	// .. specified params
44	(void)(void(*)(void)) foo1;
45	}
46
47	// K&R function definition not preceded by full prototype
48	int foo9(a, b) // expected-warning {{old-style function definition is not preceded by a prototype}}
49	int a, b;
50	{
51	return a + b;
52	}
53
54	// Function declaration with no types
55	void foo10(); // expected-warning {{this function declaration is not a prototype}}
56	// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:12-[[@LINE-1]]:12}:"void"
57	// K&R function definition with incomplete param list declared
58	void foo10(p, p2) void *p; {} // expected-warning {{old-style function definition is not preceded by a prototype}}
59
60	// K&R function definition with previous prototype declared is not diagnosed.
61	void foo11(int p, int p2);
62	void foo11(p, p2) int p; int p2; {}
63
64	// PR31020
65	void __attribute__((cdecl)) foo12(d) // expected-warning {{this old-style function definition is not preceded by a prototype}}
66	short d;
67	{}
68
69	// No warnings for variadic functions. Overloadable attribute is required
70	// to avoid err_ellipsis_first_param error.
71	// rdar://problem/33251668
72	void foo13(...) __attribute__((overloadable));
73	void foo13(...) __attribute__((overloadable)) {}
74

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