[LLVMbugs] [Bug 21818] New: [fuzz] Assertion `Tok.is(tok::tilde) && "ParseOptionalCXXScopeSpecifier fail"' failed.

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=21818

            Bug ID: 21818
           Summary: [fuzz] Assertion `Tok.is(tok::tilde) &&
                    "ParseOptionalCXXScopeSpecifier fail"' 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 13460
  --> http://llvm.org/bugs/attachment.cgi?id=13460&action=edit
test case

Fuzzing discovered that the attached test case, when given as input to

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

causes this assertion failure:

parse-scope-specifier.cpp:1:1: error: C++ requires a type specifier for all
declarations
a {
^
clang-3.6: tools/clang/lib/Parse/ParseExprCXX.cpp:1457: ExprResult
clang::Parser::ParseCXXPseudoDestructor(clang::Expr *, clang::SourceLocation,
tok::TokenKind, clang::CXXScopeSpec &, ParsedType): Assertion
`Tok.is(tok::tilde) && "ParseOptionalCXXScopeSpecifier fail"' failed.

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