https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96596
Bug ID: 96596 Summary: [11 Regression] ICE: tree check: expected class ‘type’, have ‘exceptional’ (error_mark) in match_builtin_function_types Product: gcc Version: 11.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: anbu1024.me at gmail dot com Target Milestone: --- $ cat test.c void __builtin_abort ( int x [__builtin_vis_fpcmpeq8shl ]) ; ------------------------------------------------------------------------------- $ gcc-snapshot11 --version gcc (GCC) 11.0.0 20200802 (experimental) Copyright (C) 2020 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ------------------------------------------------------------------------------- $ gcc-snapshot11 test.c test.c:2:31: error: ‘__builtin_vis_fpcmpeq8shl’ undeclared here (not in a function); did you mean ‘__builtin_ia32_cmpeqps’? 2 | void __builtin_abort ( int x [__builtin_vis_fpcmpeq8shl ]) ; | ^~~~~~~~~~~~~~~~~~~~~~~~~ | __builtin_ia32_cmpeqps test.c:2:1: internal compiler error: tree check: expected class ‘type’, have ‘exceptional’ (error_mark) in match_builtin_function_types, at c/c-decl.c:1715 2 | void __builtin_abort ( int x [__builtin_vis_fpcmpeq8shl ]) ; | ^~~~ 0x73c1e2 tree_class_check_failed(tree_node const*, tree_code_class, char const*, int, char const*) ../../gcc-11-20200802/gcc/tree.c:9737 0x5f3a13 tree_class_check(tree_node*, tree_code_class, char const*, int, char const*) ../../gcc-11-20200802/gcc/tree.h:3426 0x5f3a13 match_builtin_function_types ../../gcc-11-20200802/gcc/c/c-decl.c:1715 0x5f3a13 diagnose_mismatched_decls ../../gcc-11-20200802/gcc/c/c-decl.c:1994 0x7ed0e4 duplicate_decls ../../gcc-11-20200802/gcc/c/c-decl.c:2936 0x7efab9 pushdecl(tree_node*) ../../gcc-11-20200802/gcc/c/c-decl.c:3129 0x80226e start_decl(c_declarator*, c_declspecs*, bool, tree_node*) ../../gcc-11-20200802/gcc/c/c-decl.c:5201 0x85cccc c_parser_declaration_or_fndef ../../gcc-11-20200802/gcc/c/c-parser.c:2299 0x866893 c_parser_external_declaration ../../gcc-11-20200802/gcc/c/c-parser.c:1773 0x867389 c_parser_translation_unit ../../gcc-11-20200802/gcc/c/c-parser.c:1646 0x867389 c_parse_file() ../../gcc-11-20200802/gcc/c/c-parser.c:21812 0x8c020d c_common_parse_file() ../../gcc-11-20200802/gcc/c-family/c-opts.c:1188 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. ------------------------------------------------------------------------------- $ gcc-snapshot10 --version gcc (GCC) 10.2.1 20200725 Copyright (C) 2020 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ------------------------------------------------------------------------------- $ gcc-snapshot10 test.c test.c:2:31: error: ‘__builtin_vis_fpcmpeq8shl’ undeclared here (not in a function); did you mean ‘__builtin_ia32_cmpeqps’? 2 | void __builtin_abort ( int x [__builtin_vis_fpcmpeq8shl ]) ; | ^~~~~~~~~~~~~~~~~~~~~~~~~ | __builtin_ia32_cmpeqps test.c:2:6: warning: conflicting types for built-in function ‘__builtin_abort’; expected ‘void(void)’ []8;;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wbuiltin-declaration-mismatch-Wbuiltin-declaration-mismatch]8;;] 2 | void __builtin_abort ( int x [__builtin_vis_fpcmpeq8shl ]) ; | ^~~~~~~~~~~~~~~ test.c:1:1: note: ‘__builtin_abort’ is declared in header ‘<stdlib.h>’ +++ |+#include <stdlib.h> 1 |