https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86869
Bug ID: 86869
Summary: ICE when taking address of array member of __memx
struct pointer
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: saaadhu at gcc dot gnu.org
Target Milestone: ---
The following code
struct S {
char y[2];
};
void foo(const __memx struct S *s) {
const char (*p)[2] = &s->y;
}
causes an ICE when compiled with the below flags on avr-gcc 9.0.0 20180805
(reproducible on 5.4 as well) causes an ICE
$ avr-gcc -O0 -mmcu=avr51 test.c
during RTL pass: expand
In function 'foo':
6 : internal compiler error: in convert_memory_address_addr_space_1, at
explow.c:300
const char (*p)[2] = &s->y;
^
0x5bd7ca convert_memory_address_addr_space_1(scalar_int_mode, rtx_def*,
unsigned char, bool, bool)
../../gcc-src/gcc/explow.c:300
0x939605 convert_memory_address_addr_space_1(scalar_int_mode, rtx_def*,
unsigned char, bool, bool)
../../gcc-src/gcc/explow.c:401
0x939605 convert_memory_address_addr_space(scalar_int_mode, rtx_def*, unsigned
char)
../../gcc-src/gcc/explow.c:402
0x94fdd9 expand_expr_addr_expr
../../gcc-src/gcc/expr.c:8028
0x94fdd9 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc-src/gcc/expr.c:11142
0x95b727 store_expr(tree_node*, rtx_def*, int, bool, bool)
../../gcc-src/gcc/expr.c:5614
0x95c8c0 expand_assignment(tree_node*, tree_node*, bool)
../../gcc-src/gcc/expr.c:5398
0x849837 expand_gimple_stmt_1
../../gcc-src/gcc/cfgexpand.c:3636
0x84a728 expand_gimple_stmt
../../gcc-src/gcc/cfgexpand.c:3734
0x84b0ff expand_gimple_basic_block
../../gcc-src/gcc/cfgexpand.c:5769
0x84fec7 execute
../../gcc-src/gcc/cfgexpand.c:6372
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.
Compiler exited with result code 1
