1 // RUN: %clang_cc1 -fsyntax-only -verify %s -triple x86_64-apple-darwin9 2 3 // rdar://6726818 4 void f1() { 5 const __builtin_va_list args2; 6 (void)__builtin_va_arg(args2, int); // expected-error {{first argument to 'va_arg' is of type 'const __builtin_va_list' and not 'va_list'}} 7 } 8 9 void f2(int a, ...) { 10 __builtin_ms_va_list ap; 11 __builtin_ms_va_start(ap, a); // expected-error {{'__builtin_ms_va_start' used in System V ABI function}} 12 } 13 14 void __attribute__((ms_abi)) g1(int a) { 15 __builtin_ms_va_list ap; 16 17 __builtin_ms_va_start(ap, a, a); // expected-error {{too many arguments to function}} 18 __builtin_ms_va_start(ap, a); // expected-error {{'va_start' used in function with fixed args}} 19 } 20 21 void __attribute__((ms_abi)) g2(int a, int b, ...) { 22 __builtin_ms_va_list ap; 23 24 __builtin_ms_va_start(ap, 10); // expected-warning {{second argument to 'va_start' is not the last named parameter}} 25 __builtin_ms_va_start(ap, a); // expected-warning {{second argument to 'va_start' is not the last named parameter}} 26 __builtin_ms_va_start(ap, b); 27 } 28 29 void __attribute__((ms_abi)) g3(float a, ...) { // expected-note 2{{parameter of type 'float' is declared here}} 30 __builtin_ms_va_list ap; 31 32 __builtin_ms_va_start(ap, a); // expected-warning {{passing an object that undergoes default argument promotion to 'va_start' has undefined behavior}} 33 __builtin_ms_va_start(ap, (a)); // expected-warning {{passing an object that undergoes default argument promotion to 'va_start' has undefined behavior}} 34 } 35 36 void __attribute__((ms_abi)) g5() { 37 __builtin_ms_va_list ap; 38 __builtin_ms_va_start(ap, ap); // expected-error {{'va_start' used in function with fixed args}} 39 } 40 41 void __attribute__((ms_abi)) g6(int a, ...) { 42 __builtin_ms_va_list ap; 43 __builtin_ms_va_start(ap); // expected-error {{too few arguments to function}} 44 } 45 46 void __attribute__((ms_abi)) 47 bar(__builtin_ms_va_list authors, ...) { 48 __builtin_ms_va_start(authors, authors); 49 (void)__builtin_va_arg(authors, int); 50 __builtin_ms_va_end(authors); 51 } 52 53 void __attribute__((ms_abi)) g7(int a, ...) { 54 __builtin_ms_va_list ap; 55 __builtin_ms_va_start(ap, a); 56 // FIXME: This error message is sub-par. 57 __builtin_va_arg(ap, int) = 1; // expected-error {{expression is not assignable}} 58 int *x = &__builtin_va_arg(ap, int); // expected-error {{cannot take the address of an rvalue}} 59 __builtin_ms_va_end(ap); 60 } 61 62 void __attribute__((ms_abi)) g8(int a, ...) { 63 __builtin_ms_va_list ap; 64 __builtin_ms_va_start(ap, a); 65 (void)__builtin_va_arg(ap, void); // expected-error {{second argument to 'va_arg' is of incomplete type 'void'}} 66 __builtin_ms_va_end(ap); 67 } 68 69 enum E { x = -1, y = 2, z = 10000 }; 70 void __attribute__((ms_abi)) g9(__builtin_ms_va_list args) { 71 (void)__builtin_va_arg(args, float); // expected-warning {{second argument to 'va_arg' is of promotable type 'float'}} 72 (void)__builtin_va_arg(args, enum E); // no-warning 73 (void)__builtin_va_arg(args, short); // expected-warning {{second argument to 'va_arg' is of promotable type 'short'}} 74 (void)__builtin_va_arg(args, char); // expected-warning {{second argument to 'va_arg' is of promotable type 'char'}} 75 } 76 77 void __attribute__((ms_abi)) g10(int a, ...) { 78 __builtin_va_list ap; 79 __builtin_va_start(ap, a); // expected-error {{'va_start' used in Win64 ABI function}} 80 } 81
