[llvm-bugs] [Bug 34404] New: llvm_unreachable in clang::ento::ExprEngine::VisitCommonDeclRefExpr()

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=34404

            Bug ID: 34404
           Summary: llvm_unreachable in
                    clang::ento::ExprEngine::VisitCommonDeclRefExpr()
           Product: clang
           Version: unspecified
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Static Analyzer
          Assignee: dcoughlin at apple.com
          Reporter: alexfh at google.com
                CC: llvm-bugs at lists.llvm.org

$ cat VisitCommonDeclRefExpr-crash.cc
struct a {
  struct {
    long b;
  };
};
void c() { &a::b; }
$ clang-tidy -checks=-*,clang-analyzer* VisitCommonDeclRefExpr-crash.cc --
-std=c++11
Support for this Decl not implemented.
UNREACHABLE executed at
llvm/tools/clang/lib/StaticAnalyzer/Core/ExprEngine.cpp:2087!
*** SIGABRT received by PID 14594 (TID 14594) from PID 14594; stack trace: ***
    @     0x7fdf7a59122f        304  abort
    @          0x468c3d0         80  llvm::llvm_unreachable_internal()
    @          0x2e172fd        960 
clang::ento::ExprEngine::VisitCommonDeclRefExpr()
    @          0x2e13458       3888  clang::ento::ExprEngine::Visit()
    @          0x2e0fe44        528  clang::ento::ExprEngine::ProcessStmt()
    @          0x2e0faca        240 
clang::ento::ExprEngine::processCFGElement()
    @          0x2e3da58        192 
clang::ento::CoreEngine::HandleBlockEntrance()
    @          0x2e3d273        496 
clang::ento::CoreEngine::dispatchWorkItem()
    @          0x2e3d0a8        544  clang::ento::CoreEngine::ExecuteWorkList()
    @          0x2138e05         80  clang::ento::ExprEngine::ExecuteWorkList()
    @          0x20e1802       1056  (anonymous
namespace)::AnalysisConsumer::ActionExprEngine()
    @          0x20e15c1         80  (anonymous
namespace)::AnalysisConsumer::RunPathSensitiveChecks()
    @          0x20e1285        288  (anonymous
namespace)::AnalysisConsumer::HandleCode()
    @          0x20d4963        416  (anonymous
namespace)::AnalysisConsumer::HandleDeclsCallGraph()
    @          0x20d2be7        336  (anonymous
namespace)::AnalysisConsumer::HandleTranslationUnit()
    @          0x25136ce         80 
clang::MultiplexConsumer::HandleTranslationUnit()
    @          0x2f59506        288  clang::ParseAST()
    @          0x250109a         80  clang::ASTFrontendAction::ExecuteAction()
    @          0x2500b30        112  clang::FrontendAction::Execute()
    @          0x23192c2        464  clang::CompilerInstance::ExecuteAction()
    @          0x21eac92        464 
clang::tooling::FrontendActionFactory::runInvocation()
    @          0x21eab33        160 
clang::tooling::ToolInvocation::runInvocation()
    @          0x21e9426       1840  clang::tooling::ToolInvocation::run()
    @          0x21ebd20       1664  clang::tooling::ClangTool::run()
    @          0x1a5e574       1680  clang::tidy::runClangTidy()
    @           0x5d8eb1       2784  clang::tidy::clangTidyMain()

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