Details
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Type:
Bug
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Status: Closed (View Workflow)
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Priority:
High
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Resolution: Fixed
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Affects Version/s: 6.08/02
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Component/s: Cling
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Labels:None
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Environment:
lxplus
Description
hi -
In root 6.08.00, the following code crashes cling when i try to retrieve
the class Foo from python. A complete buildable example is in
the attached tar file; source `setup' and then run the script `test'.
The crash does not occur in root 6.06.06.
I can work around this by hiding the initialization bits in the original
code from cling, so this is not critical.
template <typename T>
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class Hitvec
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{
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public:
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static int initHelper() { return 0; };
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static const int s_info;
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};
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template <class T>
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const int Hitvec<T>::s_info = Hitvec<T>::initHelper();
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class Foo : public Hitvec<int> {};
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With cling/clang built with debugging, i get an assertion failure:
python: /afs/cern.ch/work/s/ssnyder/root-6.08.00/root/interpreter/llvm/inst/include/llvm/Support/Casting.h:95: static bool llvm::isa_impl_cl<To, const From*>::doit(const From*) [with To = clang::Expr; From = clang::Stmt]: Assertion `Val && "isa<> used on a null pointer"' failed.
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with backtrace
#4 0x00007fdd20159766 in llvm::isa_impl_cl<clang::Expr, clang::Stmt const*>::doit (Val=0x0)
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at /afs/cern.ch/work/s/ssnyder/root-6.08.00/root/interpreter/llvm/inst/include/llvm/Support/Casting.h:95
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#5 0x00007fdd2014b26a in llvm::isa_impl_wrap<clang::Expr, clang::Stmt const*, clang::Stmt const*>::doit (Val=@0x7fff10bbd308: 0x0)
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at /afs/cern.ch/work/s/ssnyder/root-6.08.00/root/interpreter/llvm/inst/include/llvm/Support/Casting.h:122
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#6 0x00007fdd2013c3f5 in llvm::isa_impl_wrap<clang::Expr, clang::Stmt* const, clang::Stmt const*>::doit (Val=@0x7fff10bbd348: 0x0)
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at /afs/cern.ch/work/s/ssnyder/root-6.08.00/root/interpreter/llvm/inst/include/llvm/Support/Casting.h:114
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#7 0x00007fdd20130a25 in llvm::isa<clang::Expr, clang::Stmt*> (
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Val=@0x7fff10bbd348: 0x0)
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at /afs/cern.ch/work/s/ssnyder/root-6.08.00/root/interpreter/llvm/inst/include/llvm/Support/Casting.h:134
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#8 0x00007fdd2012701f in llvm::cast<clang::Expr, clang::Stmt> (Val=0x0)
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at /afs/cern.ch/work/s/ssnyder/root-6.08.00/root/interpreter/llvm/inst/include/llvm/Support/Casting.h:237
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#9 0x00007fdd215f150a in clang::VarDecl::evaluateValue (this=0x39e6b298,
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Notes=...)
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at /afs/cern.ch/user/s/ssnyder/work/root-6.08.00/root/interpreter/llvm/src/tools/clang/lib/AST/Decl.cpp:2158
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#10 0x00007fdd215f1467 in clang::VarDecl::evaluateValue (this=0x39e6b298)
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at /afs/cern.ch/user/s/ssnyder/work/root-6.08.00/root/interpreter/llvm/src/tools/clang/lib/AST/Decl.cpp:2138
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#11 0x00007fdd20192b30 in TClingDataMemberInfo::Offset (this=0x39becb40)
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at /afs/cern.ch/work/s/ssnyder/root-6.08.00/root/core/meta/src/TClingDataMemberInfo.cxx:326
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#12 0x00007fdd200a418e in TCling::DataMemberInfo_Offset (this=0x10b3040,
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dminfo=0x39becb40)
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at /afs/cern.ch/work/s/ssnyder/root-6.08.00/root/core/meta/src/TCling.cxx:7395
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#13 0x00007fdd27c1fb0d in TDataMember::GetOffsetCint (this=0x39a7ae20)
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at /afs/cern.ch/work/s/ssnyder/root-6.08.00/root/core/meta/src/TDataMember.cxx:680
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...
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