[Bug target/103628] New: ICE: Segmentation fault (in gfc_conv_tree_to_mpfr)

[asolokha at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103628

            Bug ID: 103628
           Summary: ICE: Segmentation fault (in gfc_conv_tree_to_mpfr)
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---
            Target: powerpc-e300c3-linux-gnu

Created attachment 51956
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51956&action=edit
Testcase

gcc 12.0.0 20211205 snapshot (g:c9419faef0bfaf31e6a6f744baa064892e0d105c) ICEs
when compiling test/f90_correct/src/qp54.f08 from the flang test suite for a
32-bit BE target::

% powerpc-e300c3-linux-gnu-gfortran-12.0.0 -w -c
flang/testsuite/f90_correct/src/qp54.f08
f951: internal compiler error: Segmentation fault
0xf19f66 crash_signal
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_p20211205/work/gcc-12-20211205/gcc/toplev.c:322
0x940280 tree_check(tree_node*, char const*, int, char const*, tree_code)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_p20211205/work/gcc-12-20211205/gcc/tree.h:3440
0x940280 gfc_conv_tree_to_mpfr(__mpfr_struct*, tree_node*)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_p20211205/work/gcc-12-20211205/gcc/fortran/trans-const.c:285
0x90e770 gfc_interpret_float(int, unsigned char*, unsigned long,
__mpfr_struct*)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_p20211205/work/gcc-12-20211205/gcc/fortran/target-memory.c:419
0x816071 gfc_hollerith2real(gfc_expr*, int)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_p20211205/work/gcc-12-20211205/gcc/fortran/arith.c:2605
0x900018 gfc_convert_constant(gfc_expr*, bt, int)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_p20211205/work/gcc-12-20211205/gcc/fortran/simplify.c:8728
0x867b87 do_simplify
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_p20211205/work/gcc-12-20211205/gcc/fortran/intrinsic.c:4636
0x87513a gfc_convert_type_warn(gfc_expr*, gfc_typespec*, int, int, bool)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_p20211205/work/gcc-12-20211205/gcc/fortran/intrinsic.c:5362
0x85c6f3 gfc_check_assign_symbol(gfc_symbol*, gfc_component*, gfc_expr*)
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_p20211205/work/gcc-12-20211205/gcc/fortran/expr.c:4545
0x837986 add_init_expr_to_sym
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_p20211205/work/gcc-12-20211205/gcc/fortran/decl.c:2014
0x8437ba variable_decl
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_p20211205/work/gcc-12-20211205/gcc/fortran/decl.c:3108
0x8437ba gfc_match_data_decl()
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_p20211205/work/gcc-12-20211205/gcc/fortran/decl.c:6297
0x8b87a9 match_word
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_p20211205/work/gcc-12-20211205/gcc/fortran/parse.c:67
0x8b87a9 decode_statement
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_p20211205/work/gcc-12-20211205/gcc/fortran/parse.c:378
0x8bea44 next_free
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_p20211205/work/gcc-12-20211205/gcc/fortran/parse.c:1397
0x8bea44 next_statement
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_p20211205/work/gcc-12-20211205/gcc/fortran/parse.c:1629
0x8c0c8b parse_spec
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_p20211205/work/gcc-12-20211205/gcc/fortran/parse.c:4168
0x8c4051 parse_progunit
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_p20211205/work/gcc-12-20211205/gcc/fortran/parse.c:6192
0x8c4bf3 gfc_parse_file()
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_p20211205/work/gcc-12-20211205/gcc/fortran/parse.c:6737
0x91adde gfc_be_parse_file
       
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-12.0.0_p20211205/work/gcc-12-20211205/gcc/fortran/f95-lang.c:216