http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56356
Bug #: 56356
Summary: DJGPP compiler crashing
Classification: Unclassified
Product: gcc
Version: 4.7.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: fabrizio...@tiscali.it
I am building gcc as cross-compiler for DJGPP, running on an Ubuntu 12.04
machine. I downloaded the sources of binutils 2.23.1 and gcc 4.7.2. binutils
compiled with no problems. gcc's build proceeded for a while, so that the
compiler was actually built, but, while compiling libstdc++, the cross-compiler
crashed.
This is the command (part of the build process) that caused the crash
/home/fabrizio/dev/djgpp/cross/gcc/./gcc/xgcc -v -shared-libgcc
-B/home/fabrizio/dev/djgpp/cross/gcc/./gcc -nostdinc++
-L/home/fabrizio/dev/djgpp/cross/gcc/i586-pc-msdosdjgpp/libstdc++-v3/src
-L/home/fabrizio/dev/djgpp/cross/gcc/i586-pc-msdosdjgpp/libstdc++-v3/src/.libs
-B/home/fabrizio/dev/djgpp/i586-pc-msdosdjgpp/bin/
-B/home/fabrizio/dev/djgpp/i586-pc-msdosdjgpp/lib/ -isystem
/home/fabrizio/dev/djgpp/i586-pc-msdosdjgpp/include -isystem
/home/fabrizio/dev/djgpp/i586-pc-msdosdjgpp/sys-include
-I/home/fabrizio/dev/djgpp/cross/gcc-4.7.2/libstdc++-v3/../libgcc
-I/home/fabrizio/dev/djgpp/cross/gcc/i586-pc-msdosdjgpp/libstdc++-v3/include/i586-pc-msdosdjgpp
-I/home/fabrizio/dev/djgpp/cross/gcc/i586-pc-msdosdjgpp/libstdc++-v3/include
-I/home/fabrizio/dev/djgpp/cross/gcc-4.7.2/libstdc++-v3/libsupc++
-fno-implicit-templates -Wall -Wextra -Wwrite-strings -Wcast-qual -Wabi
-fdiagnostics-show-location=once -ffunction-sections -fdata-sections
-frandom-seed=strstream.lo -g -O2
-I/home/fabrizio/dev/djgpp/cross/gcc/i586-pc-msdosdjgpp/libstdc++-v3/include/backward
-Wno-deprecated -c ../../../../../gcc-4.7.2/libstdc++-v3/src/c++98/strstream.cc
-o strstream.o
I even tried to use gdb to debug cc1plus.
gdb --args /home/fabrizio/dev/djgpp/cross/gcc/./gcc/cc1plus -quiet
-nostdinc++ -v -I
/home/fabrizio/dev/djgpp/cross/gcc-4.7.2/libstdc++-v3/../libgcc -I
/home/fabrizio/dev/djgpp/cross/gcc/i586-pc-msdosdjgpp/libstdc++-v3/include/i586-pc-msdosdjgpp
-I
/home/fabrizio/dev/djgpp/cross/gcc/i586-pc-msdosdjgpp/libstdc++-v3/include
-I /home/fabrizio/dev/djgpp/cross/gcc-4.7.2/libstdc++-v3/libsupc++ -I
/home/fabrizio/dev/djgpp/cross/gcc/i586-pc-msdosdjgpp/libstdc++-v3/include/backward
-iprefix
/home/fabrizio/dev/djgpp/cross/gcc/gcc/../lib/gcc/i586-pc-msdosdjgpp/4.7.2/
-isystem /home/fabrizio/dev/djgpp/cross/gcc/./gcc/include -isystem
/home/fabrizio/dev/djgpp/cross/gcc/./gcc/include-fixed -remap -imacros
/home/fabrizio/dev/djgpp/i586-pc-msdosdjgpp/bin/../include/sys/version.h
-isystem /home/fabrizio/dev/djgpp/i586-pc-msdosdjgpp/include -isystem
/home/fabrizio/dev/djgpp/i586-pc-msdosdjgpp/sys-include
../../../../../gcc-4.7.2/libstdc++-v3/src/c++98/strstream.cc -quiet
-dumpbase strstream.cc -mtune=pentium -march=pentium -auxbase-strip
strstream.o -g -O2 -Wall -Wextra -Wwrite-strings -Wcast-qual
-Wabi -Wno-deprecated -version -fno-implicit-templates
-fdiagnostics-show-location=once -ffunction-sections -fdata-sections
-frandom-seed=strstream.lo -o /tmp/ccqldaCk.s
And this is the result
Program received signal SIGSEGV, Segmentation fault.
eliminate_regs_1 (x=0x0, mem_mode=VOIDmode, insn=0x0,
may_use_invariant=0 '\000', for_costs=0 '\000')
at ../../gcc-4.7.2/gcc/reload1.c:2549
2549 enum rtx_code code = GET_CODE (x);
(gdb) ba
#0 eliminate_regs_1 (x=0x0, mem_mode=VOIDmode, insn=0x0,
may_use_invariant=0 '\000', for_costs=0 '\000')
at ../../gcc-4.7.2/gcc/reload1.c:2549
#1 0x007d42da in eliminate_regs (x=optimised out,
mem_mode=mem_mode@entry=VOIDmode, insn=insn@entry=0x0)
at ../../gcc-4.7.2/gcc/reload1.c:2960
#2 0x007ed561 in sdbout_parms (parms=0x75e8a440)
at ../../gcc-4.7.2/gcc/sdbout.c:1278
#3 sdbout_end_prologue (line=optimised out, file=optimised out)
at ../../gcc-4.7.2/gcc/sdbout.c:1594
#4 sdbout_begin_prologue (line=optimised out, file=optimised out)
at ../../gcc-4.7.2/gcc/sdbout.c:1585
#5 0x006aea43 in final_start_function (first=optimised out,
file=0x13751d0, optimize_p=optimised out)
at ../../gcc-4.7.2/gcc/final.c:1543
#6 0x009aa10e in x86_output_mi_thunk (file=0x13751d0,
thunk=optimised out, delta=-8, vcall_offset=0, function=optimised out)
at ../../gcc-4.7.2/gcc/config/i386/i386.c:32312
#7 0x0061e2f2 in assemble_thunk (node=0x75e99000)
at ../../gcc-4.7.2/gcc/cgraphunit.c:1641
#8 assemble_thunks_and_aliases (node=optimised out, node=optimised out)
at ../../gcc-4.7.2/gcc/cgraphunit.c:1802
#9 0x0061e231 in assemble_thunks_and_aliases (node=0x75e80b40,
---Type return to continue, or q return to quit---
node=0x75e80b40) at
