1 // RUN: %clang_cc1 -fsyntax-only -verify %s -triple x86_64-apple-darwin9
2
f1(void)3 void f1(void) {
4 const __builtin_va_list args2;
5 (void)__builtin_va_arg(args2, int); // expected-error {{first argument to 'va_arg' is of type 'const __builtin_va_list' and not 'va_list'}}
6 }
7
f2(int a,...)8 void f2(int a, ...) {
9 __builtin_ms_va_list ap;
10 __builtin_ms_va_start(ap, a); // expected-error {{'__builtin_ms_va_start' used in System V ABI function}}
11 }
12
g1(int a)13 void __attribute__((ms_abi)) g1(int a) {
14 __builtin_ms_va_list ap;
15
16 __builtin_ms_va_start(ap, a, a); // expected-error {{too many arguments to function}}
17 __builtin_ms_va_start(ap, a); // expected-error {{'va_start' used in function with fixed args}}
18 }
19
g2(int a,int b,...)20 void __attribute__((ms_abi)) g2(int a, int b, ...) {
21 __builtin_ms_va_list ap;
22
23 __builtin_ms_va_start(ap, 10); // expected-warning {{second argument to 'va_start' is not the last named parameter}}
24 __builtin_ms_va_start(ap, a); // expected-warning {{second argument to 'va_start' is not the last named parameter}}
25 __builtin_ms_va_start(ap, b);
26 }
27
g3(float a,...)28 void __attribute__((ms_abi)) g3(float a, ...) { // expected-note 2{{parameter of type 'float' is declared here}}
29 __builtin_ms_va_list ap;
30
31 __builtin_ms_va_start(ap, a); // expected-warning {{passing an object that undergoes default argument promotion to 'va_start' has undefined behavior}}
32 __builtin_ms_va_start(ap, (a)); // expected-warning {{passing an object that undergoes default argument promotion to 'va_start' has undefined behavior}}
33 }
34
g5(void)35 void __attribute__((ms_abi)) g5(void) {
36 __builtin_ms_va_list ap;
37 __builtin_ms_va_start(ap, ap); // expected-error {{'va_start' used in function with fixed args}}
38 }
39
g6(int a,...)40 void __attribute__((ms_abi)) g6(int a, ...) {
41 __builtin_ms_va_list ap;
42 __builtin_ms_va_start(ap); // expected-error {{too few arguments to function}}
43 }
44
45 void __attribute__((ms_abi))
bar(__builtin_ms_va_list authors,...)46 bar(__builtin_ms_va_list authors, ...) {
47 __builtin_ms_va_start(authors, authors);
48 (void)__builtin_va_arg(authors, int);
49 __builtin_ms_va_end(authors);
50 }
51
g7(int a,...)52 void __attribute__((ms_abi)) g7(int a, ...) {
53 __builtin_ms_va_list ap;
54 __builtin_ms_va_start(ap, a);
55 // FIXME: This error message is sub-par.
56 __builtin_va_arg(ap, int) = 1; // expected-error {{expression is not assignable}}
57 int *x = &__builtin_va_arg(ap, int); // expected-error {{cannot take the address of an rvalue}}
58 __builtin_ms_va_end(ap);
59 }
60
g8(int a,...)61 void __attribute__((ms_abi)) g8(int a, ...) {
62 __builtin_ms_va_list ap;
63 __builtin_ms_va_start(ap, a);
64 (void)__builtin_va_arg(ap, void); // expected-error {{second argument to 'va_arg' is of incomplete type 'void'}}
65 __builtin_ms_va_end(ap);
66 }
67
68 enum E { x = -1, y = 2, z = 10000 };
g9(__builtin_ms_va_list args)69 void __attribute__((ms_abi)) g9(__builtin_ms_va_list args) {
70 (void)__builtin_va_arg(args, float); // expected-warning {{second argument to 'va_arg' is of promotable type 'float'}}
71 (void)__builtin_va_arg(args, enum E); // no-warning
72 (void)__builtin_va_arg(args, short); // expected-warning {{second argument to 'va_arg' is of promotable type 'short'}}
73 (void)__builtin_va_arg(args, char); // expected-warning {{second argument to 'va_arg' is of promotable type 'char'}}
74 }
75
g10(int a,...)76 void __attribute__((ms_abi)) g10(int a, ...) {
77 __builtin_va_list ap;
78 __builtin_va_start(ap, a); // expected-error {{'va_start' used in Win64 ABI function}}
79 }
80