Thanks for the heads-up Mikhail. Ravi,
this looks like your code. Could you take a look at this? pl On 16 November 2015 at 16:24, Mikhail Filimonov via lldb-dev <lldb-dev@lists.llvm.org> wrote: > Hi guys and thank you for the excellent community project! > > > > Recently I’ve stumbled on a pesky, but trivial Invalid iterator dereference > bug in SymbolContext and TypeMap implementations at revisions > > https://github.com/llvm-mirror/lldb/blob/e528da256d14ecac7df858462b44dca931879509/source/Symbol/SymbolContext.cpp#L823 > > and > > https://github.com/llvm-mirror/lldb/blob/5ac1fc5bc961688505334395598a2bb174eabd3b/source/Symbol/TypeMap.cpp#L172 > > > > From the code below it is obvious that TypeMap::ForEach calls the > pre-increment operator on m_types iterator right after it has been > invalidated by m_types.erase > > > > SymbolContext::SortTypeList(TypeMap &type_map, TypeList &type_list ) const > > { > > TypeMaptoList callbackM2L (type_map, type_list); > > type_map.ForEach(callbackM2L); > > return ; > > } > > > > void > > TypeMap::ForEach (std::function <bool(lldb::TypeSP &type_sp)> const > &callback) > > { > > for (auto pos = m_types.begin(), end = m_types.end(); pos != end; ++pos) > > { > > if (!callback(pos->second)) > > break; > > } > > } > > > > bool > > TypeMap::RemoveTypeWithUID (user_id_t uid) > > { > > iterator pos = m_types.find(uid); > > > > if (pos != m_types.end()) > > { > > m_types.erase(pos); > > return true; > > } > > return false; > > } > > > > class TypeMaptoList > > { > > public: > > TypeMaptoList(TypeMap &typem, TypeList &typel) : > > type_map(typem),type_list(typel) > > { > > } > > > > bool > > operator() (const lldb::TypeSP& type) > > { > > if(type) > > { > > type_list.Insert(type); > > type_map.RemoveTypeWithUID(type->GetID()); > > if (type_map.Empty()) > > return false; > > } > > return true; > > } > > > > private: > > TypeMap &type_map; > > TypeList &type_list; > > }; > > > > Regards, > > Mikhail Filimonov > > > > > > > > ________________________________ > This email message is for the sole use of the intended recipient(s) and may > contain confidential information. Any unauthorized review, use, disclosure > or distribution is prohibited. If you are not the intended recipient, > please contact the sender by reply email and destroy all copies of the > original message. > ________________________________ > > _______________________________________________ > lldb-dev mailing list > lldb-dev@lists.llvm.org > http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev > _______________________________________________ lldb-dev mailing list lldb-dev@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev
