[LLVMbugs] [Bug 13344] New: [Windows] __cdecl is not equivalent to "default calling convention" anymore

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=13344

             Bug #: 13344
           Summary: [Windows] __cdecl is not equivalent to "default
                    calling convention" anymore
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Windows NT
            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


Looks like my r160121 change has regressed:
$ cat cdecl.cpp
void foo();
void __cdecl foo();

$ clang++ -c cdecl.cpp && echo "OK"
OK

$ clang++ -Xclang -cxx-abi -Xclang microsoft -c cdecl.cpp && echo "OK"
cdecl.cpp:2:14: error: function declared 'cdecl' here was previously declared
without calling convention
void __cdecl foo();
             ^
cdecl.cpp:1:6: note: previous declaration is here
void foo();
     ^
1 error generated.

$ cl -nologo -c cdecl.cpp && echo "OK"
cdecl.cpp
OK

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