A _different_ bootstrap failure in CVS sources

[Chip Salzenberg]

This time it's a SEGV in regmove.  Compiling with -O works, at least
for the specific source file that is causing the SEGV.

Script started on Sun Feb 27 14:33:06 2000
$ gdb stage1/cc1
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This GDB was configured as "i686-pc-linux-gnu"...
Breakpoint 1 at 0x8049138
Breakpoint 2 at 0x80a302a: file ../SRC/gcc/rtl.c, line 1249.
.gdbinit:5: Error in sourced command file:
../SRC/gcc/.gdbinit:102: Error in sourced command file:
Function "abort" not defined.
(gdb) run -g -O2 dwarfout.i
Starting program: /u/build/gcc/egcs/gcc/stage1/cc1 -g -O2 dwarfout.i
Breakpoint 1 at 0x147d25
 vprintf getchar getc_unlocked getchar_unlocked putchar fputc_unlocked putc_unlocked putchar_unlocked feof_unlocked ferror_unlocked tolower toupper __strcpy_small __strcspn_c1 __strcspn_c2 __strcspn_c3 __strspn_c1 __strspn_c2 __strspn_c3 __strpbrk_c2 __strpbrk_c3 __strtok_r_1c __strsep_1c __strsep_2c __strsep_3c __strsep_g strtod strtol strtoul strtoq strtouq strtoll strtoull atof atoi atol atoll stat lstat fstat mknod is_pseudo_reg type_main_variant is_tagged_type dwarf_tag_name dwarf_attr_name dwarf_stack_op_name dwarf_typemod_name dwarf_fmt_byte_name dwarf_fund_type_name decl_ultimate_origin block_ultimate_origin decl_class_context is_body_block fundamental_type_code root_type_1 root_type write_modifier_bytes_1 write_modifier_bytes type_is_fundamental equate_decl_number_to_die_number equate_type_number_to_die_number output_reg_number {GC 5329k -> 1298k in 0.020} output_mem_loc_descriptor output_loc_descriptor output_bound_representation output_enumeral_list ceiling field_type simple_type_align_in_bits simple_type_size_in_bits field_byte_offset sibling_attribute location_attribute data_member_location_attribute const_value_attribute location_or_const_value_attribute name_attribute fund_type_attribute mod_fund_type_attribute user_def_type_attribute mod_u_d_type_attribute subscript_data_attribute byte_size_attribute bit_offset_attribute bit_size_attribute element_list_attribute stmt_list_attribute low_pc_attribute high_pc_attribute body_begin_attribute body_end_attribute language_attribute member_attribute comp_dir_attribute sf_names_attribute src_info_attribute mac_info_attribute prototyped_attribute producer_attribute inline_attribute containing_type_attribute abstract_origin_attribute pure_or_virtual_attribute name_and_src_coords_attributes type_attribute type_tag dienum_push dienum_pop member_declared_type function_start_label output_array_type_die output_set_type_die output_inlined_enumeration_type_die output_inlined_structure_type_die output_inlined_union_type_die output_enumeration_type_die output_formal_parameter_die output_global_subroutine_die {GC 5367k -> 1907k in 0.040} output_global_variable_die output_label_die output_lexical_block_die output_inlined_subroutine_die output_local_variable_die output_member_die output_ptr_to_mbr_type_die output_compile_unit_die
Program received signal SIGSEGV, Segmentation fault.
mark_flags_life_zones (flags=0x6e26c0) at ../SRC/gcc/regmove.c:288
288		  if (GET_RTX_CLASS (GET_CODE (insn)) == 'i')
(gdb) print insn
$1 = 0x0
(gdb) where
#0  mark_flags_life_zones (flags=0x6e26c0) at ../SRC/gcc/regmove.c:288
#1  0x8118168 in regmove_optimize (f=0x454420, nregs=933, 
    regmove_dump_file=0x0) at ../SRC/gcc/regmove.c:1064
#2  0x804ce8c in rest_of_compilation (decl=0x543c80)
    at ../SRC/gcc/toplev.c:3350
#3  0x81d75cf in finish_function (nested=0) at ../SRC/gcc/c-decl.c:6465
#4  0x81c946a in yyparse () at c-parse.y:311
#5  0x804b7fd in compile_file (name=0x214170 "\003")
    at ../SRC/gcc/toplev.c:2432
#6  0x804efeb in main (argc=4, argv=0xbffffbd4) at ../SRC/gcc/toplev.c:4864
(gdb) print block
$2 = 0
(gdb) print n_basic_blocks 
$3 = 296
(gdb) The program is running.  Exit anyway? (y or n) y
$ 

Script done on Sun Feb 27 14:33:37 2000

Configuration: 'SRC/configure --with-gcc-version-trigger=/u/build/gcc/egcs/SRC/gcc/version.c --host=i686-pc-linux-gnu --prefix=/usr/local/egcs --enable-languages=objc,c++ --enable-threads=posix --enable-shared --enable-version-specific-runtime-libs --enable-namespaces --enable-long-long --norecursion '


-- 
Chip Salzenberg              - a.k.a. -              <chip@valinux.com>
"I wanted to play hopscotch with the impenetrable mystery of existence,
    but he stepped in a wormhole and had to go in early."  // MST3K
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