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From: "141242068 at smail dot nju.edu.cn" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c/110699] New: internal compiler error: tree check: expected array_type, have error_mark in array_ref_low_bound, at tree.cc:12754 Date: Mon, 17 Jul 2023 09:14:31 +0000 [thread overview] Message-ID: <bug-110699-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110699 Bug ID: 110699 Summary: internal compiler error: tree check: expected array_type, have error_mark in array_ref_low_bound, at tree.cc:12754 Product: gcc Version: 14.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: 141242068 at smail dot nju.edu.cn Target Milestone: --- When compiling below program using gcc-14 with option `gcc-14 a.c`, gcc-14 crashes: ``` typedef __attribute__((__vector_size__(64))) int T; void f(void) { extern char a[64], b[64]; void *p = a; T q = *(T *)&b[0]; } void g() { extern char b; } ``` GCC's output is pasted below: ``` <source>: In function 'g': <source>:10:15: error: conflicting types for 'b'; have 'char' 10 | extern char b; | ^ <source>:4:22: note: previous declaration of 'b' with type 'char[64]' 4 | extern char a[64], b[64]; | ^ <source>: In function 'f': <source>:6:17: internal compiler error: tree check: expected array_type, have error_mark in array_ref_low_bound, at tree.cc:12754 6 | T q = *(T *)&b[0]; | ~^~~ 0x215104e internal_error(char const*, ...) ???:0 0x896b1b tree_check_failed(tree_node const*, char const*, int, char const*, ...) ???:0 0xd6c895 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ???:0 0xd6d557 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ???:0 0xd6db1d gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ???:0 0xd6cf6a gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ???:0 0xd7053a gimplify_stmt(tree_node**, gimple**) ???:0 0xd6d53e gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ???:0 0xd7053a gimplify_stmt(tree_node**, gimple**) ???:0 0xd6e4ab gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ???:0 0xd7053a gimplify_stmt(tree_node**, gimple**) ???:0 0xd6d914 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*), int) ???:0 0xd7053a gimplify_stmt(tree_node**, gimple**) ???:0 0xd719d3 gimplify_body(tree_node*, bool) ???:0 0xd71e2f gimplify_function_tree(tree_node*) ???:0 0xbaeba7 cgraph_node::analyze() ???:0 0xbb26f1 symbol_table::finalize_compilation_unit() ???:0 Please submit a full bug report, with preprocessed source (by using -freport-bug). Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. ``` This can be verified by visiting the Compiler Explorer: https://gcc.godbolt.org/z/jPhnfG4f3
next reply other threads:[~2023-07-17 9:14 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-07-17 9:14 141242068 at smail dot nju.edu.cn [this message] 2023-07-17 14:24 ` [Bug c/110699] [12/13/14 Regression] " mpolacek at gcc dot gnu.org 2023-07-17 14:26 ` mpolacek at gcc dot gnu.org 2023-07-17 18:13 ` pinskia at gcc dot gnu.org 2023-07-21 19:40 ` cvs-commit at gcc dot gnu.org 2023-07-23 12:49 ` roger at nextmovesoftware dot com 2023-07-23 17:55 ` pinskia at gcc dot gnu.org
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