| // RUN: %clang_cc1 -std=c23 -fsyntax-only -ffreestanding -verify=expected,both %s -triple i386-pc-unknown |
| // RUN: %clang_cc1 -std=c23 -fsyntax-only -ffreestanding -verify=expected,both %s -triple x86_64-apple-darwin9 |
| // RUN: %clang_cc1 -std=c23 -fsyntax-only -ffreestanding -fms-compatibility -verify=expected,both %s -triple x86_64-pc-win32 |
| // RUN: %clang_cc1 -std=c17 -fsyntax-only -ffreestanding -verify=both,pre-c23 %s |
| |
| void foo(int x, int y, ...) { |
| __builtin_va_list list; |
| __builtin_c23_va_start(); // pre-c23-error {{use of unknown builtin '__builtin_c23_va_start'}} \ |
| expected-error{{too few arguments to function call, expected 1, have 0}} |
| // Note, the unknown builtin diagnostic is only issued once per function, |
| // which is why the rest of the lines do not get the same diagonstic. |
| __builtin_c23_va_start(list); // ok |
| __builtin_c23_va_start(list, 0); // expected-warning {{second argument to 'va_start' is not the last non-variadic parameter}} |
| __builtin_c23_va_start(list, x); // expected-warning {{second argument to 'va_start' is not the last non-variadic parameter}} |
| __builtin_c23_va_start(list, y); // ok |
| __builtin_c23_va_start(list, 0, 1); // expected-error {{too many arguments to function call, expected at most 2, have 3}} |
| __builtin_c23_va_start(list, y, y); // expected-error {{too many arguments to function call, expected at most 2, have 3}} |
| } |
| |
| // Test the same thing as above, only with the macro from stdarg.h. This will |
| // not have the unknown builtin diagnostics, but will have different |
| // diagnostics between C23 and earlier modes. |
| #include <stdarg.h> |
| void bar(int x, int y, ...) { |
| // FIXME: the "use of undeclared identifier 'va_start'" diagnostics is an odd |
| // follow-on diagnostic that should be silenced. |
| va_list list; |
| va_start(); // pre-c23-error {{too few arguments provided to function-like macro invocation}} \ |
| pre-c23-error {{use of undeclared identifier 'va_start'}} \ |
| expected-error{{too few arguments to function call, expected 1, have 0}} |
| va_start(list); // pre-c23-error {{too few arguments provided to function-like macro invocation}} \ |
| pre-c23-error {{use of undeclared identifier 'va_start'}} |
| va_start(list, 0); // both-warning {{second argument to 'va_start' is not the last non-variadic parameter}} |
| va_start(list, x); // both-warning {{second argument to 'va_start' is not the last non-variadic parameter}} |
| va_start(list, y); // ok |
| va_start(list, 0, 1); // pre-c23-error {{too many arguments provided to function-like macro invocation}} \ |
| pre-c23-error {{use of undeclared identifier 'va_start'}} \ |
| expected-error {{too many arguments to function call, expected at most 2, have 3}} |
| va_start(list, y, y); // pre-c23-error {{too many arguments provided to function-like macro invocation}} \ |
| pre-c23-error {{use of undeclared identifier 'va_start'}} \ |
| expected-error {{too many arguments to function call, expected at most 2, have 3}} |
| // pre-c23-note@__stdarg_va_arg.h:* 4 {{macro 'va_start' defined here}} |
| } |
