[Bug tree-optimization/97556] New: ICE at -O2 and -O3 in 32-bit mode on x86_64-pc-linux-gnu in size_remaining, at builtins.c:235

[su at cs dot ucdavis.edu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97556

            Bug ID: 97556
           Summary: ICE at -O2 and -O3 in 32-bit mode on
                    x86_64-pc-linux-gnu in size_remaining, at
                    builtins.c:235
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: su at cs dot ucdavis.edu
  Target Milestone: ---

[520] % gcctk -v
Using built-in specs.
COLLECT_GCC=gcctk
COLLECT_LTO_WRAPPER=/local/suz-local/software/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/11.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --disable-bootstrap
--prefix=/local/suz-local/software/local/gcc-trunk --enable-languages=c,c++
--disable-werror --enable-multilib --with-system-zlib
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 11.0.0 20201023 (experimental) [master revision
7991e963239:9cbfe237f74:757ba6653c2699761c2243e0194749a6695112d8] (GCC) 
[521] % 
[521] % gcctk -m32 -Os -c small.c
[522] % 
[522] % gcctk -m32 -O2 -c small.c
during GIMPLE pass: strlen
small.c: In function ‘f’:
small.c:4:6: internal compiler error: in size_remaining, at builtins.c:235
    4 | void f () {
      |      ^
0x7a510b
access_ref::size_remaining(generic_wide_int<fixed_wide_int_storage<128> >*)
const
        ../../gcc-trunk/gcc/builtins.c:235
0x7a53d5 access_ref::add_offset(generic_wide_int<fixed_wide_int_storage<128> >
const&, generic_wide_int<fixed_wide_int_storage<128> > const&)
        ../../gcc-trunk/gcc/builtins.c:334
0x7a6bd3 compute_objsize
        ../../gcc-trunk/gcc/builtins.c:4840
0x7a6b63 compute_objsize
        ../../gcc-trunk/gcc/builtins.c:4781
0x7a7de1 compute_objsize(tree_node*, int, access_ref*, range_query*)
        ../../gcc-trunk/gcc/builtins.c:5039
0x7a7f61 compute_objsize(tree_node*, int, tree_node**, tree_node**,
range_query*)
        ../../gcc-trunk/gcc/builtins.c:5063
0xf15fc2 maybe_warn_overflow
        ../../gcc-trunk/gcc/tree-ssa-strlen.c:2042
0xf1a7f8 maybe_warn_overflow
        ../../gcc-trunk/gcc/tree-ssa-strlen.c:2351
0xf1a7f8 handle_store
        ../../gcc-trunk/gcc/tree-ssa-strlen.c:5059
0xf1c744 check_and_optimize_stmt
        ../../gcc-trunk/gcc/tree-ssa-strlen.c:5697
0xf1c744 strlen_dom_walker::before_dom_children(basic_block_def*)
        ../../gcc-trunk/gcc/tree-ssa-strlen.c:5874
0x1729737 dom_walker::walk(basic_block_def*)
        ../../gcc-trunk/gcc/domwalk.c:309
0xf0dd4f printf_strlen_execute
        ../../gcc-trunk/gcc/tree-ssa-strlen.c:5940
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.
[523] % 
[523] % cat small.c
char a[1][3];
int b;

void f () {
  unsigned c = 1000000000;
  if (b)
    goto L;
  while (b) {
    c = ~0;
  L:
    a[c][0] = 0;
  }
}