https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101196
Bug ID: 101196
Summary: [12 Regression] ICE: tree check: expected class
‘type’, have ‘exceptional’ (error_mark) in
useless_type_conversion_p
Product: gcc
Version: 12.0
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 37.c
extern int var[16];
void foo(int [x]);
void bar(void)
{
void foo(int array[]);
}
void baz(void)
{
foo(var);
}
-------------------------------------------------------------------------------
$ gcc-sp12 --version
gcc (GCC) 12.0.0 20210620 (experimental)
Copyright (C) 2021 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-sp12 37.c
37.c:4:15: error: ‘x’ undeclared here (not in a function)
4 | void foo(int [x]);
| ^
37.c: In function ‘baz’:
37.c:13:7: error: type of formal parameter 1 is incomplete
13 | foo(var);
| ^~~
37.c:13:3: internal compiler error: tree check: expected class ‘type’, have
‘exceptional’ (error_mark) in useless_type_conversion_p, at gimple-expr.c:259
13 | foo(var);
| ^~~
0x7a313c tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
../../gcc-12-20210620/gcc/tree.c:8734
0x6d5d8a tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
../../gcc-12-20210620/gcc/tree.h:3494
0x6d5d8a useless_type_conversion_p(tree_node*, tree_node*)
../../gcc-12-20210620/gcc/gimple-expr.c:259
0xbc1108 types_compatible_p
../../gcc-12-20210620/gcc/gimple-expr.h:67
0xbc1108 gimplify_addr_expr
../../gcc-12-20210620/gcc/gimplify.c:6234
0xbb9384 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc-12-20210620/gcc/gimplify.c:14141
0xbc4dc4 gimplify_call_expr
../../gcc-12-20210620/gcc/gimplify.c:3454
0xbbacd4 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc-12-20210620/gcc/gimplify.c:14066
0xbbc9f6 gimplify_stmt(tree_node**, gimple**)
../../gcc-12-20210620/gcc/gimplify.c:6865
0xbbd14d gimplify_bind_expr
../../gcc-12-20210620/gcc/gimplify.c:1426
0xbbacee gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc-12-20210620/gcc/gimplify.c:14295
0xbd2229 gimplify_stmt(tree_node**, gimple**)
../../gcc-12-20210620/gcc/gimplify.c:6865
0xbd2229 gimplify_body(tree_node*, bool)
../../gcc-12-20210620/gcc/gimplify.c:15339
0xbd266d gimplify_function_tree(tree_node*)
../../gcc-12-20210620/gcc/gimplify.c:15493
0xa10bf7 cgraph_node::analyze()
../../gcc-12-20210620/gcc/cgraphunit.c:670
0xa135f7 analyze_functions
../../gcc-12-20210620/gcc/cgraphunit.c:1234
0xa1428d symbol_table::finalize_compilation_unit()
../../gcc-12-20210620/gcc/cgraphunit.c:2508
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-sp11 --version
gcc (GCC) 11.1.1 20210619
Copyright (C) 2021 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-sp11 37.c
37.c:4:15: error: ‘x’ undeclared here (not in a function)
4 | void foo(int [x]);
| ^
37.c: In function ‘baz’:
37.c:13:7: error: type of formal parameter 1 is incomplete
13 | foo(var);
| ^~~
