[Bug modula2/105408] New: ICE in output_constructor_regular_field, at varasm.cc:5515

[Bug modula2/105408] New: ICE in output_constructor_regular_field, at varasm.cc:5515

[ro at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105408

            Bug ID: 105408
           Summary: ICE in output_constructor_regular_field, at
                    varasm.cc:5515
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: modula2
          Assignee: gaius at gcc dot gnu.org
          Reporter: ro at gcc dot gnu.org
  Target Milestone: ---
            Target: sparcv9-sun-solaris2.11

When targetting 64-bit Solaris/SPARC, the bootstrap finishes successfully
(unlike
32-bit, cf. PR modula2/105392) and 64-bit gm2 testresults are reasonable:

                === gm2 Summary for unix ===

# of expected passes            11721
# of unexpected failures        7
# of unresolved testcases       1

However, 32-bit testresults show 2000+ of the same ICE:

FAIL: gm2/calling-c/datatypes/unbounded/run/pass/m.mod compilation,  -O 
(internal compiler error: ^[[m^[[Kin simplify_subreg, at simplify-rtx.cc:7351)

during RTL pass: final
/var/gcc/gcc-12.0.1-20220424/11.4-gm2-64/sparcv9-sun-solaris2.11/./libgm2/libm2iso/SYSTEM.def:
In function '_M2_testgeneric_init':
/var/gcc/gcc-12.0.1-20220424/11.4-gm2-64/sparcv9-sun-solaris2.11/./libgm2/libm2iso/SYSTEM.def:12:12:
internal compiler error: in output_constructor_regular_field, at varasm.cc:5515
0x101302957 output_constructor_regular_field
        /vol/gcc/src/hg/master/modula-2/gcc/varasm.cc:5515
0x101302957 output_constructor
        /vol/gcc/src/hg/master/modula-2/gcc/varasm.cc:5827
0x101303e5b assemble_constant_contents
        /vol/gcc/src/hg/master/modula-2/gcc/varasm.cc:3642
0x101305e57 output_constant_def_contents
        /vol/gcc/src/hg/master/modula-2/gcc/varasm.cc:3687
0x1013062bb mark_constants_in_pattern
        /vol/gcc/src/hg/master/modula-2/gcc/varasm.cc:4256
0x10130fb3f mark_constants
        /vol/gcc/src/hg/master/modula-2/gcc/varasm.cc:4288
0x10130fb3f mark_constant_pool
        /vol/gcc/src/hg/master/modula-2/gcc/varasm.cc:4304
0x10130fb3f output_constant_pool
        /vol/gcc/src/hg/master/modula-2/gcc/varasm.cc:4519
0x10130fb3f assemble_start_function(tree_node*, char const*)
        /vol/gcc/src/hg/master/modula-2/gcc/varasm.cc:1880
0x1009d1cb7 rest_of_handle_final
        /vol/gcc/src/hg/master/modula-2/gcc/final.cc:4281
0x1009d1cb7 execute
        /vol/gcc/src/hg/master/modula-2/gcc/final.cc:4363

Thread 2 hit Breakpoint 1, fancy_abort (file=0x100b18c08
"/vol/gcc/src/hg/master/modula-2/gcc/varasm.cc", line=5515,
function=0x100b19bb8 "output_constructor_regular_field") at
/vol/gcc/src/hg/master/modula-2/gcc/diagnostic.cc:2024
2024      if (global_dc->printer == NULL)
(gdb) where
#0  fancy_abort (file=0x100b18c08
"/vol/gcc/src/hg/master/modula-2/gcc/varasm.cc", line=5515,
function=0x100b19bb8 "output_constructor_regular_field") at
/vol/gcc/src/hg/master/modula-2/gcc/diagnostic.cc:2024
#1  0x00000001021b1360 in output_constructor_regular_field
(local=0xffffffff7fffbbc8) at
/vol/gcc/src/hg/master/modula-2/gcc/varasm.cc:5515
#2  0x00000001021b28c0 in output_constructor (exp=<constructor
0xffffffff7ac4d7d0>, size=4, align=64, reverse=false, outer=0x0) at
/vol/gcc/src/hg/master/modula-2/gcc/varasm.cc:5827
#3  0x00000001021afed8 in output_constant (exp=<constructor
0xffffffff7ac4d7d0>, size=4, align=64, reverse=false, merge_strings=false) at
/vol/gcc/src/hg/master/modula-2/gcc/varasm.cc:5294
#4  0x00000001021a63a8 in assemble_constant_contents (exp=<constructor
0xffffffff7ac4d7d0>, label=0xffffffff7ac1c7f0 "*.LLC0", align=64,
merge_strings=false) at /vol/gcc/src/hg/master/modula-2/gcc/varasm.cc:3642
#5  0x00000001021a6af8 in output_constant_def_contents
(symbol=0xffffffff7ac800f0) at
/vol/gcc/src/hg/master/modula-2/gcc/varasm.cc:3687
#6  0x00000001021a9008 in mark_constants_in_pattern (insn=0xffffffff7aca7180)
at /vol/gcc/src/hg/master/modula-2/gcc/varasm.cc:4256
#7  0x00000001021a91ec in mark_constants (insn=0xffffffff7aca7180) at
/vol/gcc/src/hg/master/modula-2/gcc/varasm.cc:4288
#8  0x00000001021a926c in mark_constant_pool () at
/vol/gcc/src/hg/master/modula-2/gcc/varasm.cc:4304
#9  0x00000001021aa114 in output_constant_pool (fnname=0xffffffff7ac4d530
"_M2_testgeneric_init", fndecl=<function_decl 0xffffffff7ac72600
_M2_testgeneric_init>) at /vol/gcc/src/hg/master/modula-2/gcc/varasm.cc:4519
#10 0x000000010219bab0 in assemble_start_function (decl=<function_decl
0xffffffff7ac72600 _M2_testgeneric_init>, fnname=0xffffffff7ac4d530
"_M2_testgeneric_init") at /vol/gcc/src/hg/master/modula-2/gcc/varasm.cc:1880
#11 0x00000001012c7320 in rest_of_handle_final () at
/vol/gcc/src/hg/master/modula-2/gcc/final.cc:4281
#12 0x00000001012c7aec in (anonymous namespace)::pass_final::execute
(this=0x103c0d0b0) at /vol/gcc/src/hg/master/modula-2/gcc/final.cc:4363
#13 0x00000001018ce598 in execute_one_pass (pass=<opt_pass* 0x103c0d0b0
"final"(338)>) at /vol/gcc/src/hg/master/modula-2/gcc/passes.cc:2638
#14 0x00000001018cebb0 in execute_pass_list_1 (pass=<opt_pass* 0x103c0d0b0
"final"(338)>) at /vol/gcc/src/hg/master/modula-2/gcc/passes.cc:2738
#15 0x00000001018cec08 in execute_pass_list_1 (pass=<opt_pass* 0x103c0ca90
"*all-late_compilation"(-1)>) at
/vol/gcc/src/hg/master/modula-2/gcc/passes.cc:2739
#16 0x00000001018cec08 in execute_pass_list_1 (pass=<opt_pass* 0x103c0ab10
"*rest_of_compilation"(-1)>) at
/vol/gcc/src/hg/master/modula-2/gcc/passes.cc:2739
#17 0x00000001018cec9c in execute_pass_list (fn=0xffffffff7ac7a000,
pass=<opt_pass* 0x103c05d30 "fixup_cfg"(99)>) at
/vol/gcc/src/hg/master/modula-2/gcc/passes.cc:2749
#18 0x000000010108cf98 in cgraph_node::expand (this=<cgraph_node * const
0xffffffff7ac7e000 "_M2_testgeneric_init"/0>) at
/vol/gcc/src/hg/master/modula-2/gcc/cgraphunit.cc:1835
#19 0x000000010108db44 in expand_all_functions () at
/vol/gcc/src/hg/master/modula-2/gcc/cgraphunit.cc:1999
#20 0x000000010108ef44 in symbol_table::compile (this=0xffffffff7ac10000) at
/vol/gcc/src/hg/master/modula-2/gcc/cgraphunit.cc:2349
#21 0x000000010108f6dc in symbol_table::finalize_compilation_unit
(this=0xffffffff7ac10000) at
/vol/gcc/src/hg/master/modula-2/gcc/cgraphunit.cc:2530
#22 0x0000000101ac0ca8 in compile_file () at
/vol/gcc/src/hg/master/modula-2/gcc/toplev.cc:479
#23 0x0000000101ac6f90 in do_compile (no_backend=false) at
/vol/gcc/src/hg/master/modula-2/gcc/toplev.cc:2168
#24 0x0000000101ac7700 in toplev::main (this=0xffffffff7fffcffa, argc=50,
argv=0xffffffff7fffd0c8) at /vol/gcc/src/hg/master/modula-2/gcc/toplev.cc:2320
#25 0x000000010311be58 in main (argc=50, argv=0xffffffff7fffd0c8) at
/vol/gcc/src/hg/master/modula-2/gcc/main.cc:39

[Bug modula2/105408] ICE in output_constructor_regular_field, at varasm.cc:5515

[ro at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105408

--- Comment #1 from Rainer Orth <ro at gcc dot gnu.org> ---
I just noticed I messed up: this ICE happens only for a single testcase:

FAIL: gm2/iso/run/pass/testgeneric.mod compilation, {additional_flags= -Os }
(internal compiler error: in output_constructor_regular_field, at
varasm.cc:5515)

for both 32 and 64-bit.