https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71605
Bug ID: 71605 Summary: ICE on invalid C++ code (incorrect member access): in pop_binding, at cp/name-lookup.c:368 Product: gcc Version: 7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: su at cs dot ucdavis.edu Target Milestone: --- The following C++ code causes an ICE when compiled with the current GCC trunk on x86_64-linux-gnu in both 32-bit and 64-bit modes. It also affects 4.8.x and later, and is a regression from 4.7.x. $ g++-trunk -v Using built-in specs. COLLECT_GCC=g++-trunk COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/7.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../gcc-source-trunk/configure --enable-languages=c,c++,lto --prefix=/usr/local/gcc-trunk --disable-bootstrap Thread model: posix gcc version 7.0.0 20160620 (experimental) [trunk revision 237606] (GCC) $ $ g++-trunk -c small.cpp small.cpp: In function ‘void foo()’: small.cpp:11:4: error: ‘operator I’ is not a member of ‘B’ &B::operator struct I; // should be: &B::operator struct A; ^ small.cpp:11:24: internal compiler error: in pop_binding, at cp/name-lookup.c:368 &B::operator struct I; // should be: &B::operator struct A; ^ 0x86b23a pop_binding(tree_node*, tree_node*) ../../gcc-source-trunk/gcc/cp/name-lookup.c:368 0x6adf57 poplevel(int, int, int) ../../gcc-source-trunk/gcc/cp/decl.c:756 0x80e0e3 do_poplevel(tree_node*) ../../gcc-source-trunk/gcc/cp/semantics.c:446 0x812769 finish_compound_stmt(tree_node*) ../../gcc-source-trunk/gcc/cp/semantics.c:1408 0x7aad67 cp_parser_compound_statement ../../gcc-source-trunk/gcc/cp/parser.c:10760 0x7aaf0f cp_parser_function_body ../../gcc-source-trunk/gcc/cp/parser.c:20696 0x7aaf0f cp_parser_ctor_initializer_opt_and_function_body ../../gcc-source-trunk/gcc/cp/parser.c:20732 0x7ab9b1 cp_parser_function_definition_after_declarator ../../gcc-source-trunk/gcc/cp/parser.c:25415 0x7ac6c5 cp_parser_function_definition_from_specifiers_and_declarator ../../gcc-source-trunk/gcc/cp/parser.c:25327 0x7ac6c5 cp_parser_init_declarator ../../gcc-source-trunk/gcc/cp/parser.c:18468 0x7aca19 cp_parser_simple_declaration ../../gcc-source-trunk/gcc/cp/parser.c:12378 0x7acd21 cp_parser_block_declaration ../../gcc-source-trunk/gcc/cp/parser.c:12246 0x7b6100 cp_parser_declaration ../../gcc-source-trunk/gcc/cp/parser.c:12143 0x7b4bd4 cp_parser_declaration_seq_opt ../../gcc-source-trunk/gcc/cp/parser.c:12022 0x7b4f08 cp_parser_translation_unit ../../gcc-source-trunk/gcc/cp/parser.c:4324 0x7b4f08 c_parse_file() ../../gcc-source-trunk/gcc/cp/parser.c:37486 0x918e52 c_common_parse_file() ../../gcc-source-trunk/gcc/c-family/c-opts.c:1070 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. $ -------------------------------------------------------------- struct A {}; struct B { int I; operator struct A () { return A (); }; }; void foo () { &B::operator struct I; // should be: &B::operator struct A; }