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// RUN: %clang_cc1 -fsyntax-only -verify -Wno-undef %s
// rdar://2362963
#if FOO // ok.
#endif
#pragma GCC diagnostic warning "-Wundef"
#if FOO // expected-warning {{'FOO' is not defined}}
#endif
#pragma GCC diagnostic ignored "-Wun" "def"
#if FOO // ok.
#endif
#pragma GCC diagnostic error "-Wundef"
#if FOO // expected-error {{'FOO' is not defined}}
#endif
#define foo error
#pragma GCC diagnostic foo "-Wundef" // expected-warning {{pragma diagnostic expected 'error', 'warning', 'ignored', 'fatal', 'push', or 'pop'}}
#pragma GCC diagnostic error 42 // expected-error {{expected string literal in pragma diagnostic}}
#pragma GCC diagnostic error "-Wundef" 42 // expected-warning {{unexpected token in pragma diagnostic}}
#pragma GCC diagnostic error "invalid-name" // expected-warning {{pragma diagnostic expected option name (e.g. "-Wundef")}}
#pragma GCC diagnostic error "-Winvalid-name" // expected-warning {{unknown warning group '-Winvalid-name', ignored}}
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