[LLVMbugs] [Bug 5214] New: Warn when two headers have the same header guard.

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=5214

           Summary: Warn when two headers have the same header guard.
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: preprocessor
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: jyasskin at google.com
                CC: llvmbugs at cs.uiuc.edu


I've often copied an existing header to start a new file, forgotten to update
the header guard, and then been very confused when lots of declarations are
missing. It'd be really nice if clang would warn about this.


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