[LLVMbugs] [Bug 19242] New: attribute_deprecated_with_message enabled when [[deprecated]] is not available

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=19242

            Bug ID: 19242
           Summary: attribute_deprecated_with_message enabled when
                    [[deprecated]] is not available
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: steveire at gmail.com
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Given:

  #if !defined(__clang__)
  #define __has_extension(x) 0
  #endif

  #if __has_extension(attribute_deprecated_with_message)
  #define DEPR_ATTR [[deprecated]]
  #else
  #define DEPR_ATTR
  #endif

  DEPR_ATTR void something();

stephen at hal:~/dev/src/playground/cpp{master}$ g++ -c deprecated.cpp 
stephen at hal:~/dev/src/playground/cpp{master}$ clang++ -c deprecated.cpp 
deprecated.cpp:12:1: error: expected unqualified-id
DEPR_ATTR void something();
^
deprecated.cpp:7:19: note: expanded from macro 'DEPR_ATTR'
#define DEPR_ATTR [[deprecated]]
                  ^
deprecated.cpp:12:1: error: expected expression
deprecated.cpp:7:20: note: expanded from macro 'DEPR_ATTR'
#define DEPR_ATTR [[deprecated]]
                   ^
2 errors generated.
stephen at hal:~/dev/src/playground/cpp{master}$ clang++ -std=c++11 -c
deprecated.cpp 
stephen at hal:~/dev/src/playground/cpp{master}$ clang++ --version
Ubuntu clang version 3.5.0-1~exp1 (trunk) (based on LLVM 3.5.0)
Target: x86_64-pc-linux-gnu
Thread model: posix

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