1 // RUN: %clang_cc1 -fsyntax-only -verify %s
2 // RUN: %clang_cc1 -fsyntax-only -verify %s -triple x86_64-apple-darwin9
3
f1(int a)4 void f1(int a)
5 {
6 __builtin_va_list ap;
7
8 __builtin_va_start(ap, a, a); // expected-error {{too many arguments to function}}
9 __builtin_va_start(ap, a); // expected-error {{'va_start' used in function with fixed args}}
10 }
11
f2(int a,int b,...)12 void f2(int a, int b, ...)
13 {
14 __builtin_va_list ap;
15
16 __builtin_va_start(ap, 10); // expected-warning {{second parameter of 'va_start' not last named argument}}
17 __builtin_va_start(ap, a); // expected-warning {{second parameter of 'va_start' not last named argument}}
18 __builtin_va_start(ap, b);
19 }
20
f3(float a,...)21 void f3(float a, ...)
22 {
23 __builtin_va_list ap;
24
25 __builtin_va_start(ap, a);
26 __builtin_va_start(ap, (a));
27 }
28
29
30 // stdarg: PR3075
f4(const char * msg,...)31 void f4(const char *msg, ...) {
32 __builtin_va_list ap;
33 __builtin_stdarg_start((ap), (msg));
34 __builtin_va_end (ap);
35 }
36
f5()37 void f5() {
38 __builtin_va_list ap;
39 __builtin_va_start(ap,ap); // expected-error {{'va_start' used in function with fixed args}}
40 }
41
f6(int a,...)42 void f6(int a, ...) {
43 __builtin_va_list ap;
44 __builtin_va_start(ap); // expected-error {{too few arguments to function}}
45 }
46
47 // PR3350
48 void
foo(__builtin_va_list authors,...)49 foo(__builtin_va_list authors, ...) {
50 __builtin_va_start (authors, authors);
51 (void)__builtin_va_arg(authors, int);
52 __builtin_va_end (authors);
53 }
54
f7(int a,...)55 void f7(int a, ...) {
56 __builtin_va_list ap;
57 __builtin_va_start(ap, a);
58 // FIXME: This error message is sub-par.
59 __builtin_va_arg(ap, int) = 1; // expected-error {{expression is not assignable}}
60 int *x = &__builtin_va_arg(ap, int); // expected-error {{cannot take the address of an rvalue}}
61 __builtin_va_end(ap);
62 }
63
f8(int a,...)64 void f8(int a, ...) {
65 __builtin_va_list ap;
66 __builtin_va_start(ap, a);
67 (void)__builtin_va_arg(ap, void); // expected-error {{second argument to 'va_arg' is of incomplete type 'void'}}
68 __builtin_va_end(ap);
69 }
70
71 enum E { x = -1, y = 2, z = 10000 };
f9(__builtin_va_list args)72 void f9(__builtin_va_list args)
73 {
74 (void)__builtin_va_arg(args, float); // expected-warning {{second argument to 'va_arg' is of promotable type 'float'}}
75 (void)__builtin_va_arg(args, enum E); // Don't warn here in C
76 (void)__builtin_va_arg(args, short); // expected-warning {{second argument to 'va_arg' is of promotable type 'short'}}
77 (void)__builtin_va_arg(args, char); // expected-warning {{second argument to 'va_arg' is of promotable type 'char'}}
78 }
79
f10(int a,...)80 void f10(int a, ...) {
81 int i;
82 __builtin_va_list ap;
83 i = __builtin_va_start(ap, a); // expected-error {{assigning to 'int' from incompatible type 'void'}}
84 __builtin_va_end(ap);
85 }
86