[LLVMbugs] [Bug 3675] New: potentially bogus error: " member of anonymous struct redeclares 'u'"

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=3675

           Summary: potentially bogus error: "member of anonymous struct
                    redeclares 'u'"
           Product: clang
           Version: unspecified
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Semantic Analyzer
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: kremenek at apple.com
                CC: llvmbugs at cs.uiuc.edu


gcc-4.2 -fsyntax-only eats the following self-contained test case but clang
rejects it:

typedef struct _IRP {
  union {
    struct {
      union {} u;
      struct {
        union {} u;
      };
    } Overlay;
  } Tail;
} IRP;

This seemingly contrived test-case was reduced from actual code in Wine.

The error I see:

$ clang t.c
t.c:6:18: error: member of anonymous struct redeclares 'u'
        union {} u;
                 ^
t.c:4:16: note: previous declaration is here
      union {} u;
               ^
2 diagnostics generated.


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