[LLVMbugs] [Bug 21970] New: [fuzz] Assertion `Ctx->isFileContext() && "We should have been looking only at file context here already."' failed.

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=21970

            Bug ID: 21970
           Summary: [fuzz] Assertion `Ctx->isFileContext() && "We should
                    have been looking only at file context here already."'
                    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

Fuzzing discovered that the test case below, 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/Sema/SemaLookup.cpp:1140: bool
clang::Sema::CppLookupName(clang::LookupResult&, clang::Scope*): Assertion
`Ctx->isFileContext() && "We should have been looking only at file context here
already."' failed.

Test case:

--------------------------------------------------
class { template <typename I, I::(((; namespace { o
--------------------------------------------------

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