https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69411
Bug ID: 69411 Summary: ICE on invalid code Product: gcc Version: 6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: bernd.edlinger at hotmail dot de Target Milestone: --- Created attachment 37416 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37416&action=edit reduced test case Hi, the attached small.cc creates an ICE when compiled with -fsanitize=undefined initially the ICE was triggered by a single error in > 100.000 lines C++ code. gcc -c -fsanitize=undefined small.cc small.cc:2:3: error: expected '{' before 'inline' inline namespace __cxx11 __attribute__((__abi_tag__ ("cxx11"))) { } ^~~~~~ [...] small.cc:151:1: error: expected '}' at end of input small.cc:126:12: warning: inline function 'T* std::TB5Util::SOCmnPointer<T>::p() const [with T = std::TB5Util::OTClientSession]' used but never defined inline T* p() const; ^ small.cc:134:24: warning: inline function 'const tstring& std::TB5Util::OTClientSession::getUrl() const' used but never defined inline const tstring& getUrl() const; ^~~~~~ small.cc: In member function 'std::TB5Util::EnumStatusCode std::TB5Util::SecureChannel::removeSession(std::TB5Util::OTClientSessionPtr, bool)': small.cc:150:121: internal compiler error: tree check: expected class 'type', have 'exceptional' (error_mark) in create_tmp_from_val, at gimplify.c:497 messageStream << "Secure channel: " << this << "(" << m_channelHandle << ") remove session " << session->getName() << " (" << session.p() << ") to " << session->getUrl(); ^~~~ 0xf86f27 tree_class_check_failed(tree_node const*, tree_code_class, char const*, int, char const*) ../../gcc-6-20160110/gcc/tree.c:9654 0xace87f tree_class_check(tree_node*, tree_code_class, char const*, int, char const*) ../../gcc-6-20160110/gcc/tree.h:3121 0xace87f create_tmp_from_val ../../gcc-6-20160110/gcc/gimplify.c:497 0xace87f lookup_tmp_var ../../gcc-6-20160110/gcc/gimplify.c:533 0xace87f internal_get_tmp_var ../../gcc-6-20160110/gcc/gimplify.c:563 0xac6652 get_initialized_tmp_var(tree_node*, gimple**, gimple**) ../../gcc-6-20160110/gcc/gimplify.c:600 0xac6652 gimplify_save_expr ../../gcc-6-20160110/gcc/gimplify.c:4977 0xac6652 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ../../gcc-6-20160110/gcc/gimplify.c:10402 0xad737a gimplify_call_expr ../../gcc-6-20160110/gcc/gimplify.c:2361 0xac6ac1 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ../../gcc-6-20160110/gcc/gimplify.c:10085 0xacb756 gimplify_stmt(tree_node**, gimple**) ../../gcc-6-20160110/gcc/gimplify.c:5616 0xacc361 gimplify_compound_expr ../../gcc-6-20160110/gcc/gimplify.c:4932 0xac724c gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ../../gcc-6-20160110/gcc/gimplify.c:10103 0xad6c9b gimplify_call_expr ../../gcc-6-20160110/gcc/gimplify.c:2528 0xac6ac1 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ../../gcc-6-20160110/gcc/gimplify.c:10085 0xace24c internal_get_tmp_var ../../gcc-6-20160110/gcc/gimplify.c:557 0xac6652 get_initialized_tmp_var(tree_node*, gimple**, gimple**) ../../gcc-6-20160110/gcc/gimplify.c:600 0xac6652 gimplify_save_expr ../../gcc-6-20160110/gcc/gimplify.c:4977 0xac6652 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ../../gcc-6-20160110/gcc/gimplify.c:10402 0xad737a gimplify_call_expr ../../gcc-6-20160110/gcc/gimplify.c:2361 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <http://gcc.gnu.org/bugs.html> for instructions.