https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102406
Bug ID: 102406
Summary: ICE on array declaration sized by a struct member
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: pkeir at outlook dot com
Target Milestone: ---
Created attachment 51483
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51483&action=edit
The code described in the bug report.
Compiling the code below (also attached) produces an internal compiler error.
struct Foo { unsigned x_; };
int main(int argc, char *argv[])
{
const Foo a{3};
float f[2][a.x_]{};
return 0;
}
The full error is below:
internal compiler error: in make_decl_rtl, at varasm.c:1446
6 | float f[2][a.x_]{};
| ^
0x86bd48 make_decl_rtl(tree_node*)
../../gcc/varasm.c:1446
0xda0967 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc/expr.c:10457
0xdb274b expand_constructor
../../gcc/expr.c:8491
0xda015a expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc/expr.c:10749
0xdac0ec store_expr(tree_node*, rtx_def*, int, bool, bool)
../../gcc/expr.c:5994
0xdb1ab7 store_field
../../gcc/expr.c:7491
0xdae17d expand_assignment(tree_node*, tree_node*, bool)
../../gcc/expr.c:5589
0xc76a37 expand_gimple_stmt_1
../../gcc/cfgexpand.c:3945
0xc76a37 expand_gimple_stmt
../../gcc/cfgexpand.c:4043
0xc7cf03 expand_gimple_basic_block
../../gcc/cfgexpand.c:6085
0xc7ecb7 execute
../../gcc/cfgexpand.c:6811
