https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97463
Bug ID: 97463
Summary: [11 Regression] ICE in warn_parm_ptrarray_mismatch on
an incompatible function redeclaration
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
The following invalid program triggers an ICE in the recently added
warn_parm_ptrarray_mismatch function.
$ cat z.c && gcc -O2 -S -Wall -fdump-tree-optimized=/dev/stdout z.c
void f (void**);
void f (int n) { }
z.c:2:1: internal compiler error: Segmentation fault
2 | void f (int n) { }
| ^~~~
0x131e972 crash_signal
/src/gcc/master/gcc/toplev.c:330
0xaea1f4 warn_parm_ptrarray_mismatch
/src/gcc/master/gcc/c-family/c-warn.c:3182
0xaeae8b warn_parm_array_mismatch(unsigned int, tree_node*, tree_node*)
/src/gcc/master/gcc/c-family/c-warn.c:3351
0x969c70 start_function(c_declspecs*, c_declarator*, tree_node*)
/src/gcc/master/gcc/c/c-decl.c:9560
0x9d2682 c_parser_declaration_or_fndef
/src/gcc/master/gcc/c/c-parser.c:2444
0x9d0e02 c_parser_external_declaration
/src/gcc/master/gcc/c/c-parser.c:1777
0x9d0923 c_parser_translation_unit
/src/gcc/master/gcc/c/c-parser.c:1650
0xa0ee9c c_parse_file()
/src/gcc/master/gcc/c/c-parser.c:21821
0xaa27cd c_common_parse_file()
/src/gcc/master/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.
