[LLVMbugs] [Bug 17566] New: Confusing warning description [-Wmissing-variable-declarations]

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=17566

            Bug ID: 17566
           Summary: Confusing warning description
                    [-Wmissing-variable-declarations]
           Product: clang
           Version: 3.3
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Static Analyzer
          Assignee: kremenek at apple.com
          Reporter: andrew.b.coleman at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

I have a variable that I intend to keep internal to a file, but neglected to
add static to its declaration. At first blush when reading this warning
description, I was confused by the notion that the assumption is that I should
have an extern declaration prior to it, due to missing the "non-static" portion
of the description. The warning is below:

E:\projects\dwarvenly-client\src\images.c:41:5: warning: no previous extern
declaration for non-static variable 'images' [-Wmissing-variable-declarations]
map images = {.items= nil, .items_desc= & META_OF(uint32), .len=0, .cap=0,
.items_stride=0};

Wouldn't information like having an extern declaration or adding static be more
appropriate to both be listed in a fix-it, instead of almost the entire warning
assuming one context?

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