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From: "k.even-mendoza at imperial dot ac.uk" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c/103813] New: Crash in decompose, at wide-int.h:984 fold-const Date: Wed, 22 Dec 2021 22:29:17 +0000 [thread overview] Message-ID: <bug-103813-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103813 Bug ID: 103813 Summary: Crash in decompose, at wide-int.h:984 fold-const Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: k.even-mendoza at imperial dot ac.uk Target Milestone: --- The following code crashed GCC 11 and 12, with -O1, -O2, -O3 and -Os but -O0 works just fine. struct a d; struct a { int b; int c[] } main() { d.c[268435456] || d.c[1]; } I tested it with GCC 11.1.0 Ubuntu 20.04 and GCC 12.0.0 20211216 (experimental) Ubuntu 18. I can see other bugs open but none related to fold-const. With that trace: fuzzer-file-159198.c:6:3: internal compiler error: in decompose, at wide-int.h:984 6 | d.c[268435456] || d.c[1]; | ^ 0x6f4748 wi::int_traits<generic_wide_int<wide_int_ref_storage<false, false> > >::decompose(long*, unsigned int, generic_wide_int<wide_int_ref_storage<false, false> > const&) .././../gcc-source/gcc/wide-int.h:984 0x6fbea1 wi::int_traits<generic_wide_int<wide_int_ref_storage<false, false> > >::decompose(long*, unsigned int, generic_wide_int<wide_int_ref_storage<false, false> > const&) .././../gcc-source/gcc/tree.h:3555 0x6fbea1 wide_int_ref_storage<false, false>::wide_int_ref_storage<generic_wide_int<wide_int_ref_storage<false, false> > >(generic_wide_int<wide_int_ref_storage<false, false> > const&, unsigned int) .././../gcc-source/gcc/wide-int.h:1034 0x6fbea1 generic_wide_int<wide_int_ref_storage<false, false> >::generic_wide_int<generic_wide_int<wide_int_ref_storage<false, false> > >(generic_wide_int<wide_int_ref_storage<false, false> > const&, unsigned int) .././../gcc-source/gcc/wide-int.h:790 0x6fbea1 unsigned long wi::extract_uhwi<generic_wide_int<wide_int_ref_storage<false, false> > >(generic_wide_int<wide_int_ref_storage<false, false> > const&, unsigned int, unsigned int) .././../gcc-source/gcc/wide-int.h:3212 0x6fbea1 unextend .././../gcc-source/gcc/fold-const.c:6110 0xb991ed fold_truth_andor_1 .././../gcc-source/gcc/fold-const.c:6461 0xb9a4bd fold_truth_andor .././../gcc-source/gcc/fold-const.c:9687 0xb7aaf4 fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*, tree_node*) .././../gcc-source/gcc/fold-const.c:12036 0xb82629 fold_build2_loc(unsigned int, tree_code, tree_node*, tree_node*, tree_node*) .././../gcc-source/gcc/fold-const.c:13781 0x9358b2 c_fully_fold_internal .././../gcc-source/gcc/c/c-fold.c:545 0x936089 c_fully_fold(tree_node*, bool, bool*, bool) .././../gcc-source/gcc/c/c-fold.c:125 0x8d00ec c_process_expr_stmt(unsigned int, tree_node*) .././../gcc-source/gcc/c/c-typeck.c:11320 0x8d03cd c_finish_expr_stmt(unsigned int, tree_node*) .././../gcc-source/gcc/c/c-typeck.c:11365 0x90409f c_parser_statement_after_labels .././../gcc-source/gcc/c/c-parser.c:6261 0x9067ac c_parser_compound_statement_nostart .././../gcc-source/gcc/c/c-parser.c:5798 0x927f75 c_parser_compound_statement .././../gcc-source/gcc/c/c-parser.c:5607 0x929b2a c_parser_declaration_or_fndef .././../gcc-source/gcc/c/c-parser.c:2544 0x932583 c_parser_external_declaration .././../gcc-source/gcc/c/c-parser.c:1779 0x933093 c_parser_translation_unit .././../gcc-source/gcc/c/c-parser.c:1652 Please submit a full bug report,
next reply other threads:[~2021-12-22 22:29 UTC|newest] Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-12-22 22:29 k.even-mendoza at imperial dot ac.uk [this message] 2021-12-22 22:36 ` [Bug middle-end/103813] " pinskia at gcc dot gnu.org 2021-12-22 22:37 ` [Bug middle-end/103813] [11/12 Regression] " pinskia at gcc dot gnu.org 2021-12-22 22:58 ` pinskia at gcc dot gnu.org 2021-12-23 8:34 ` [Bug middle-end/103813] [11/12 Regression] Crash in decompose, at wide-int.h:984 fold-const since r11-5271-g4866b2f5db117f9e marxin at gcc dot gnu.org 2021-12-27 16:48 ` jakub at gcc dot gnu.org 2021-12-28 16:41 ` cvs-commit at gcc dot gnu.org 2021-12-28 16:43 ` [Bug middle-end/103813] [11 " jakub at gcc dot gnu.org 2022-01-04 13:20 ` rguenth at gcc dot gnu.org 2022-01-24 9:20 ` cvs-commit at gcc dot gnu.org 2022-01-24 9:30 ` jakub at gcc dot gnu.org
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