[LLVMbugs] [Bug 11869] New: `extern "C" extern void foo(); ` shouldn't compile

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=11869

             Bug #: 11869
           Summary: `extern "C" extern void foo();` shouldn't compile
           Product: clang
           Version: 3.0
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: C++
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: timurrrr at google.com
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified


$ cat double_extern.cpp 
extern "C" extern void foo();

$ g++ -c double_extern.cpp 
double_extern.cpp:1: error: invalid use of ‘extern’ in linkage specification

$ clang++ -c double_extern.cpp
OK

$ clang++ --version
clang++ --version
clang version 3.1 (trunk 145532)
Target: x86_64-unknown-linux-gnu
Thread model: posix

Also I know that this bug is still present in Clang as a similar code was found
in AddressSanitizer which is a part of Clang codebase.

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