1e48ef2035
This patch adds a new preprocessor extension ``#pragma clang final`` which enables warning on undefinition and re-definition of macros. The intent of this warning is to extend beyond ``-Wmacro-redefined`` to warn against any and all alterations to macros that are marked `final`. This warning is part of the ``-Wpedantic-macros`` diagnostics group. Reviewed By: aaron.ballman Differential Revision: https://reviews.llvm.org/D108567
28 lines
1.0 KiB
C
28 lines
1.0 KiB
C
// RUN: %clang_cc1 -Wpedantic-macros %s -fsyntax-only -verify
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// This test verifies that the -Wpedantic-macros warnings don't fire in the
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// annotation pragmas themselves. This ensures you can annotate macros with
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// more than one of the pragmas without spewing warnings all over the code.
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#include "Inputs/pedantic-macro-interplay.h"
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#define UNSAFE_MACRO_2 1
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#pragma clang deprecated(UNSAFE_MACRO_2, "Don't use this!")
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// not-expected-warning@+1{{macro 'UNSAFE_MACRO_2' has been marked as deprecated: Don't use this!}}
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#pragma clang restrict_expansion(UNSAFE_MACRO_2, "Don't use this!")
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#define Foo 1
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#pragma clang final(Foo)
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// expected-note@+2{{macro marked 'deprecated' here}}
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// expected-note@+1{{macro marked 'deprecated' here}}
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#pragma clang deprecated(Foo)
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// expected-note@+1{{macro marked 'restrict_expansion' here}}
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#pragma clang restrict_expansion(Foo)
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// Test that unsafe_header and deprecated markings stick around after the undef
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#include "Inputs/final-macro.h"
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// expected-warning@+1{{macro 'Foo' has been marked as deprecated}}
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const int X = Foo;
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