80 lines · c
1// RUN: %clang_cc1 -fsyntax-only -Wno-default-const-init-unsafe -verify %s -triple x86_64-apple-darwin92 3void 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 8void 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 13void __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 20void __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 non-variadic parameter}}24 __builtin_ms_va_start(ap, a); // expected-warning {{second argument to 'va_start' is not the last non-variadic parameter}}25 __builtin_ms_va_start(ap, b);26}27 28void __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 35void __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 40void __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 45void __attribute__((ms_abi))46bar(__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 52void __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 61void __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 68enum E { x = -1, y = 2, z = 10000 };69void __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-warning72 (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 76void __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