debugging internal compiler errors ...

[kevin diggs]

Hi,

Using:

gdb --args ../..//gcc/cc1 -fpreprocessed libgcc2.i -dumpbase libgcc2.c
-m68020 -auxbase-strip _fixunsxfdi.o -g -O1 -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition
-version -fomit-frame-pointer -fPIC -fvisibility=hidden -o libgcc2.s

where gives:

(gdb) where
#0  0x08174348 in assign_temp ()
#1  0x09a6ef9d in ?? ()
#2  0xb7370ca0 in ?? ()
#3  0xbf900f98 in ?? ()
#4  0x08344bcc in assemble_name_raw ()
#5  0xb745f200 in ?? ()
#6  0x00000004 in ?? ()
#7  0xb745f240 in ?? ()
#8  0x08143d0c in emit_push_insn ()
#9  0x00000007 in ?? ()
#10 0x099f0fb8 in ?? ()
#11 0x00000007 in ?? ()
#12 0x0834739a in default_globalize_label ()
#13 0x09a6ef9d in ?? ()
#14 0x00000008 in ?? ()
#15 0x099f0fb8 in ?? ()
#16 0x00000010 in ?? ()
#17 0x00000010 in ?? ()
#18 0x00000001 in ?? ()
#19 0x0822d5fc in default_external_libcall ()
#20 0x00000001 in ?? ()
#21 0x09a6ef9d in ?? ()
#22 0x00000000 in ?? ()

I was kinda hoping for ... more help from gdb???

Unless someone tells me to be quiet, I'm gonna post what I find out so
that someone who like, ya know, knows what they are doing can provide
some tips.

This is usually a problem in the machine description ... right?

I built the compiler with -O1. Why can't gdb find the source? What did
I mess up?

Thanks!

(gdb) run
Starting program: /home/kevdig/projects/GCC/obj-gcc-4.3.5-m68k/gcc/cc1
-fpreprocessed libgcc2.i -dumpbase libgcc2.c -m68020 -auxbase-strip
_fixunsxfdi.o -g -O1 -W -Wall -Wwrite-strings -Wstrict-prototypes
-Wmissing-prototypes -Wold-style-definition -version
-fomit-frame-pointer -fPIC -fvisibility=hidden -o libgcc2.s

Breakpoint 1, 0x080a43f0 in main ()
Current language:  auto; currently asm
(gdb) cont
Continuing.
GNU C (GCC) version 4.3.5 (m68k-netbsdelf1.6.1)
	compiled by GNU C version 4.3.2, GMP version 4.3.2, MPFR version 2.4.2.
warning: GMP header version 4.3.2 differs from library version 4.2.2.
warning: MPFR header version 2.4.2 differs from library version 2.3.1.
GGC heuristics: --param ggc-min-expand=42 --param ggc-min-heapsize=23783
options passed:  -fpreprocessed libgcc2.i -m68020 -auxbase-strip
 _fixunsxfdi.o -g -O1 -W -Wall -Wwrite-strings -Wstrict-prototypes
 -Wmissing-prototypes -Wold-style-definition -fomit-frame-pointer -fPIC
 -fvisibility=hidden
options enabled:  -fPIC -falign-loops -fargument-alias -fauto-inc-dec
 -fbranch-count-reg -fcommon -fcprop-registers -fdefer-pop -fearly-inlining
 -feliminate-unused-debug-types -fgcse-lm -fguess-branch-probability
 -fident -fif-conversion -fif-conversion2 -finline-functions-called-once
 -fipa-pure-const -fipa-reference -fivopts -fkeep-static-consts
 -fleading-underscore -fmath-errno -fmerge-constants -fmerge-debug-strings
 -fmove-loop-invariants -fomit-frame-pointer -fpcc-struct-return -fpeephole
 -fsched-interblock -fsched-spec -fsched-stalled-insns-dep -fsigned-zeros
 -fsplit-ivs-in-unroller -fsplit-wide-types -ftoplevel-reorder
 -ftrapping-math -ftree-ccp -ftree-ch -ftree-copy-prop -ftree-copyrename
 -ftree-cselim -ftree-dce -ftree-dominator-opts -ftree-dse -ftree-fre
 -ftree-loop-im -ftree-loop-ivcanon -ftree-loop-optimize
 -ftree-parallelize-loops= -ftree-reassoc -ftree-salias -ftree-scev-cprop
 -ftree-sink -ftree-sra -ftree-ter -ftree-vect-loop-version
 -funit-at-a-time -fvar-tracking -fzero-initialized-in-bss -mbitfield
 -mstrict-align
Compiler executable checksum: 42170c5b540153f5417c72cb34ea4001
 __sputc __byte_swap_word __byte_swap_long __fixunsxfdi
Analyzing compilation unit
Performing interprocedural optimizations
 <visibility> <early_local_cleanups> <inline> <static-var>
<pure-const>Assembling functions:
 __fixunsxfdi
Program received signal SIGSEGV, Segmentation fault.
0x08174348 in assign_temp ()