1 // RUN: %clang_cc1 -fsyntax-only -verify -Wno-undef %s
2 // rdar://2362963
3 
4 #if FOO    // ok.
5 #endif
6 
7 #pragma GCC diagnostic warning "-Wundef"
8 
9 #if FOO    // expected-warning {{'FOO' is not defined}}
10 #endif
11 
12 #pragma GCC diagnostic ignored "-Wun" "def"
13 
14 #if FOO    // ok.
15 #endif
16 
17 #pragma GCC diagnostic error "-Wundef"
18 
19 #if FOO    // expected-error {{'FOO' is not defined}}
20 #endif
21 
22 
23 #define foo error
24 #pragma GCC diagnostic foo "-Wundef"  // expected-warning {{pragma diagnostic expected 'error', 'warning', 'ignored', 'fatal', 'push', or 'pop'}}
25 
26 #pragma GCC diagnostic error 42  // expected-error {{expected string literal in pragma diagnostic}}
27 
28 #pragma GCC diagnostic error "-Wundef" 42  // expected-warning {{unexpected token in pragma diagnostic}}
29 #pragma GCC diagnostic error "invalid-name"  // expected-warning {{pragma diagnostic expected option name (e.g. "-Wundef")}}
30 
31 #pragma GCC diagnostic error "-Winvalid-name"  // expected-warning {{unknown warning group '-Winvalid-name', ignored}}
32 
33