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// RUN: %clang_cc1 -fsyntax-only -verify %s
// RUN: %clang_cc1 -fsyntax-only -verify %s -triple x86_64-apple-darwin9
void f1(int a)
{
__builtin_va_list ap;
__builtin_va_start(ap, a, a); // expected-error {{too many arguments to function}}
__builtin_va_start(ap, a); // expected-error {{'va_start' used in function with fixed args}}
}
void f2(int a, int b, ...)
{
__builtin_va_list ap;
__builtin_va_start(ap, 10); // expected-warning {{second parameter of 'va_start' not last named argument}}
__builtin_va_start(ap, a); // expected-warning {{second parameter of 'va_start' not last named argument}}
__builtin_va_start(ap, b);
}
void f3(float a, ...)
{
__builtin_va_list ap;
__builtin_va_start(ap, a);
__builtin_va_start(ap, (a));
}
// stdarg: PR3075
void f4(const char *msg, ...) {
__builtin_va_list ap;
__builtin_stdarg_start((ap), (msg));
__builtin_va_end (ap);
}
void f5() {
__builtin_va_list ap;
__builtin_va_start(ap,ap); // expected-error {{'va_start' used in function with fixed args}}
}
void f6(int a, ...) {
__builtin_va_list ap;
__builtin_va_start(ap); // expected-error {{too few arguments to function}}
}
// PR3350
void
foo(__builtin_va_list authors, ...) {
__builtin_va_start (authors, authors);
(void)__builtin_va_arg(authors, int);
__builtin_va_end (authors);
}
void f7(int a, ...) {
__builtin_va_list ap;
__builtin_va_start(ap, a);
// FIXME: This error message is sub-par.
__builtin_va_arg(ap, int) = 1; // expected-error {{expression is not assignable}}
int *x = &__builtin_va_arg(ap, int); // expected-error {{address expression must be an lvalue or a function designator}}
__builtin_va_end(ap);
}
void f8(int a, ...) {
__builtin_va_list ap;
__builtin_va_start(ap, a);
(void)__builtin_va_arg(ap, void); // expected-error {{second argument to 'va_arg' is of incomplete type 'void'}}
__builtin_va_end(ap);
}
enum E { x = -1, y = 2, z = 10000 };
void f9(__builtin_va_list args)
{
(void)__builtin_va_arg(args, float); // expected-warning {{second argument to 'va_arg' is of promotable type 'float'}}
(void)__builtin_va_arg(args, enum E); // Don't warn here in C
(void)__builtin_va_arg(args, short); // expected-warning {{second argument to 'va_arg' is of promotable type 'short'}}
(void)__builtin_va_arg(args, char); // expected-warning {{second argument to 'va_arg' is of promotable type 'char'}}
}
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