[LLVMbugs] [Bug 7560] New: Type merging not performed on local extern declarations in C++

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=7560

           Summary: Type merging not performed on local extern
                    declarations in C++
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: rideau3 at gmail.com
                CC: llvmbugs at cs.uiuc.edu, dgregor at apple.com


The following invalid program is accepted in C++ mode (though not in C mode):

extern int i[];
void foo () { extern int i [3]; }
void bar () { extern int i [4]; }

In C mode, we correctly diagnose that this involves declaring i with two
different types.

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