[LLVMbugs] [Bug 21952] New: [fuzz, binary] Assertion `Tmp.isNot(tok::eof) && "EOF seen while discarding directive tokens"' failed.

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=21952

            Bug ID: 21952
           Summary: [fuzz, binary] Assertion `Tmp.isNot(tok::eof) && "EOF
                    seen while discarding directive tokens"' failed.
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: sami.liedes at iki.fi
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 13563
  --> http://llvm.org/bugs/attachment.cgi?id=13563&action=edit
test case

Fuzzing discovered that the attached test case, which contains a null byte,
when given as input to

  clang -fno-crash-diagnostics -std=c++11 -xc++ -c -emit-llvm

causes this assertion failure:

clang-3.6:
/home/sliedes/projects/llvm/llvm.src/tools/clang/lib/Lex/PPDirectives.cpp:99:
void clang::Preprocessor::DiscardUntilEndOfDirective(): Assertion
`Tmp.isNot(tok::eof) && "EOF seen while discarding directive tokens"' failed.

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