[LLVMbugs] [Bug 2086] New: undef doesn't work when a file is included twice

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=2086

           Summary: undef doesn't work when a file is included twice
           Product: clang
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: preprocessor
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: lauro.venancio at gmail.com
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=1449)
 --> (http://llvm.org/bugs/attachment.cgi?id=1449)
teste6.c

This bug affects, for example, the following code on linux

#define __need_timeval
#include <bits/time.h>
#define __need_timeval
#include <bits/time.h>


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