[LLVMbugs] [Bug 21953] New: [fuzz, binary] Assertion `StartColNo <= map.getSourceLine().size() && "Invalid range!"' failed.

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=21953

            Bug ID: 21953
           Summary: [fuzz, binary] Assertion `StartColNo <=
                    map.getSourceLine().size() && "Invalid range!"'
                    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 13564
  --> http://llvm.org/bugs/attachment.cgi?id=13564&action=edit
test case

Fuzzing discovered that the attached test case, which contains non-printable
characters, when given as input to

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

causes this assertion failure:

clang-3.6: tools/clang/lib/Frontend/TextDiagnostic.cpp:972: void
highlightRange(const clang::CharSourceRange&, unsigned int, clang::FileID,
const {anonymous}::SourceColumnMap&, std::string&, const clang::SourceManager&,
const clang::LangOptions&): Assertion `StartColNo <= map.getSourceLine().size()
&& "Invalid range!"' failed.

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