[LLVMbugs] [Bug 3215] New: Strange diagnostic for macro redefinition in system header

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=3215

           Summary: Strange diagnostic for macro redefinition in system
                    header
           Product: clang
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: preprocessor
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: sharparrow1 at yahoo.com
                CC: llvmbugs at cs.uiuc.edu


Testcase:

#define MAX(a,b) ((a)<(b)?(a):(b))
#include <sys/param.h>

Diagnostic on Linux x86:
<stdin>:1:9: note: previous definition is here
#define MAX(a,b) ((a)<(b)?(a):(b))

We either want to print out the whole diagnostic or none of it...


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