https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99225
Bug ID: 99225 Summary: ICE in wide_int_to_tree_1, at tree.c:1644 Product: gcc Version: 11.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: gs...@t-online.de Target Milestone: --- Affects versions down to at least r5 : $ cat z1.c #define vector __attribute__((vector_size(16))) int f () { vector int a = {0, 0, 0, 0}; vector int b = {1, 0, 0, 0}; return (a & (1 << b)) != 0; } $ gcc-11-20210221 -c z1.c z1.c: In function 'f': z1.c:6:3: internal compiler error: in wide_int_to_tree_1, at tree.c:1644 6 | return (a & (1 << b)) != 0; | ^~~~~~ 0xde3e1e wide_int_to_tree_1 ../../gcc/tree.c:1644 0xde433b wide_int_to_tree(tree_node*, poly_int<1u, generic_wide_int<wide_int_ref_storage<false, true> > > const&) ../../gcc/tree.c:1756 0xde433b build_int_cst(tree_node*, poly_int<1u, long>) ../../gcc/tree.c:1396 0x8945ea fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*, tree_node*) ../../gcc/fold-const.c:12048 0x894caa fold_build2_loc(unsigned int, tree_code, tree_node*, tree_node*, tree_node*) ../../gcc/fold-const.c:13715 0x69e80b c_fully_fold_internal ../../gcc/c/c-fold.c:371 0x69e00d c_fully_fold_internal ../../gcc/c/c-fold.c:623 0x69f0a9 c_fully_fold(tree_node*, bool, bool*, bool) ../../gcc/c/c-fold.c:125 0x65c2cd c_finish_return(unsigned int, tree_node*, tree_node*) ../../gcc/c/c-typeck.c:10742 0x6918b6 c_parser_statement_after_labels ../../gcc/c/c-parser.c:6162 0x69339a c_parser_compound_statement_nostart ../../gcc/c/c-parser.c:5788 0x693c13 c_parser_compound_statement ../../gcc/c/c-parser.c:5597 0x6954c8 c_parser_declaration_or_fndef ../../gcc/c/c-parser.c:2539 0x69c337 c_parser_external_declaration ../../gcc/c/c-parser.c:1777 0x69ce59 c_parser_translation_unit ../../gcc/c/c-parser.c:1650 0x69ce59 c_parse_file() ../../gcc/c/c-parser.c:21984 0x6eccc2 c_common_parse_file() ../../gcc/c-family/c-opts.c:1218