[Bug rtl-optimization/91190] New: ICE on valid code: in hashtab_chk_error, at hash-table.c:137

[su at cs dot ucdavis.edu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91190

            Bug ID: 91190
           Summary: ICE on valid code: in hashtab_chk_error, at
                    hash-table.c:137
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: su at cs dot ucdavis.edu
  Target Milestone: ---

It appears to be a recent regression. 

$ gcctk -v
Using built-in specs.
COLLECT_GCC=gcctk
COLLECT_LTO_WRAPPER=/home/suz/software/gcctk/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/10.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-source-trunk/configure --disable-multilib
--enable-languages=c,c++,lto --prefix=/home/suz/software/gcctk/gcc-trunk
--disable-bootstrap
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 10.0.0 20190717 (experimental) [trunk revision 273554] (GCC) 
$ 
$ gcctk -O2 small.
gcctk: error: small.: No such file or directory
gcctk: fatal error: no input files
compilation terminated.
$ gcctk -O2 small.c
$ gcc-9.1.0 -O3 small.c
$ 
$ gcctk -O3 small.c
hash table checking failed: equal operator returns true for a pair of values
with a different hash value
during RTL pass: expand
small.c: In function ‘main’:
small.c:8:5: internal compiler error: in hashtab_chk_error, at hash-table.c:137
    8 | int main ()
      |     ^~~~
0x60d20c hashtab_chk_error()
        ../../gcc-source-trunk/gcc/hash-table.c:137
0x94d34b hash_table<temp_address_hasher, false,
xcallocator>::verify(temp_slot_address_entry* const&, unsigned int)
        ../../gcc-source-trunk/gcc/hash-table.h:1036
0x94d4a4 hash_table<temp_address_hasher, false,
xcallocator>::find_with_hash(temp_slot_address_entry* const&, unsigned int)
        ../../gcc-source-trunk/gcc/hash-table.h:937
0x949b41 find_temp_slot_from_address
        ../../gcc-source-trunk/gcc/function.c:749
0x94abd2 update_temp_slot_address(rtx_def*, rtx_def*)
        ../../gcc-source-trunk/gcc/function.c:1103
0x8b92a5 memory_address_addr_space(machine_mode, rtx_def*, unsigned char)
        ../../gcc-source-trunk/gcc/explow.c:510
0x89dbd4 change_address_1
        ../../gcc-source-trunk/gcc/emit-rtl.c:2312
0x8a1cd5 offset_address(rtx_def*, rtx_def*, unsigned long)
        ../../gcc-source-trunk/gcc/emit-rtl.c:2550
0x8db417 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        ../../gcc-source-trunk/gcc/expr.c:10778
0x8dde48 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        ../../gcc-source-trunk/gcc/expr.c:9952
0x82976b expand_normal
        ../../gcc-source-trunk/gcc/expr.h:287
0x82976b do_jump
        ../../gcc-source-trunk/gcc/dojump.c:610
0x7a6cf3 expand_gimple_cond
        ../../gcc-source-trunk/gcc/cfgexpand.c:2548
0x7a6cf3 expand_gimple_basic_block
        ../../gcc-source-trunk/gcc/cfgexpand.c:5770
0x7a893e execute
        ../../gcc-source-trunk/gcc/cfgexpand.c:6538
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.
$ 

-------------------------------------

int printf (const char *, ...);

unsigned a[1], c;
long d, h;
int e[2], f, g;
char i;

int main ()
{
  char k = 0;
  int l;
  while (i || d)
    {
      if (g)
        while (1)
          ;
      e[1] = 0;
      long m[2], n = ~(3 & (5 | (h | 9) * 2237420170));
      g = 90 * n;
      char b = m[300000000], j = 0;
      c = 5 ^ a[c ^ (b & 5)];
      int o = d;
      k = o ? : j;
      if (k)
        for (l = 0; l < 3; l++)
          if (m[200000000000000000]) 
            printf ("%d", f);
    }
  return 0; 
}