[LLVMbugs] [Bug 13020] New: Clang 3.1 assertion failures reading and writing AST files

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=13020

             Bug #: 13020
           Summary: Clang 3.1 assertion failures reading and writing AST
                    files
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: thonermann at coverity.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified


I've been encountering assertion failures failures reading and
writing AST files with Clang 3.1.  These failures replicate easily with test
code provided with the Clang source distribution.

To replicate:

$ clang --version
clang version 3.1 (branches/release_31)
Target: x86_64-unknown-linux-gnu
Thread model: posix

$ cd <clang-3.1.src>
$ clang -emit-ast test/SemaTemplate/instantiate-enum.cpp
clang: <llvm-3.1.src>/include/llvm/Bitcode/BitstreamWriter.h:396: void
llvm::BitstreamWriter::EmitRecordWithAbbrevImpl(unsigned int,
llvm::SmallVectorImpl<T>&, llvm::StringRef) [with uintty = long unsigned int]:
Assertion `RecordIdx == Vals.size() && "Not all record operands emitted!"'
failed.

$ clang -emit-ast test/SemaCXX/libstdcxx_is_pod_hack.cpp
$ clang -c libstdcxx_is_pod_hack.ast
clang:
<llvm-3.1.src>/tools/clang/lib/Serialization/../../include/clang/Basic/IdentifierTable.h:156:
void clang::IdentifierInfo::RevertTokenIDToIdentifier(): Assertion `TokenID !=
tok::identifier && "Already at tok::identifier"' failed.

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