[LLVMbugs] [Bug 8831] New: -Wformat-security: Cannot pass 0 as format-string

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=8831

           Summary: -Wformat-security: Cannot pass 0 as format-string
           Product: clang
           Version: 2.8
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: akim.demaille at gmail.com
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=5912)
 --> (http://llvm.org/bugs/attachment.cgi?id=5912)
C source file

In the following file, Clang makes a warning for something on which GCC does
not.  Since there is a specific attribute to forbid null pointers as arguments,
it seems to me that the best behavior here is that of GCC.

clang -Wall format.cc -o foo -c
format.cc:7:12: warning: format string is not a string literal (potentially
insecure) [-Wformat-security]
  myprintf(0);
           ^
1 warning generated.

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