To track down the failure on Linux/x86-64 that I have with using ulimit, I build with full checking including gcac and get the following segmentation fault during bootstrap:
/builds/gcc/misc/./gcc/xgcc -B/builds/gcc/misc/./gcc/ -B/opt/gcc/4.2-devel/x86_64-suse-linux-gnu/bin/ -B/opt/gcc/4.2-devel/x86_64-suse-linux-gnu/lib/ -isystem /opt/gcc/4.2-devel/x86_64-suse-linux-gnu/include -isystem /opt/gcc/4.2-devel/x86_64-suse-linux-gnu/sys-include -O2 -O2 -g -O2 -DIN_GCC -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -I. -I. -I/cvs/gcc-svn/trunk/gcc -I/cvs/gcc-svn/trunk/gcc/. -I/cvs/gcc-svn/trunk/gcc/../include -I/cvs/gcc-svn/trunk/gcc/../libcpp/include -I/cvs/gcc-svn/trunk/gcc/../libdecnumber -I../libdecnumber -g0 -finhibit-size-directive -fno-inline-functions -fno-exceptions -fno-zero-initialized-in-bss -fno-toplevel-reorder -fno-omit-frame-pointer -fno-asynchronous-unwind-tables -c /cvs/gcc-svn/trunk/gcc/crtstuff.c -DCRT_BEGIN -DCRTSTUFFT_O -o crtbeginT.o -save-temps -v Reading specs from /builds/gcc/misc/./gcc/specs Target: x86_64-suse-linux-gnu Configured with: /cvs/gcc-svn/trunk/configure --prefix=/opt/gcc/4.2-devel --enable-checking=yes,misc,tree,rtl,gc,rtlflag,gcac,fold,assert,runtime --enable-threads=posix --enable-clocale=gnu --enable-__cxa_atexit --enable-shared --enable-languages=c,c++,ada,treelang,java,f95,objc --with-system-zlib x86_64-suse-linux-gnu Thread model: posix gcc version 4.2.0 20060123 (experimental) /builds/gcc/misc/./gcc/cc1 -E -quiet -v -I. -I. -I/cvs/gcc-svn/trunk/gcc -I/cvs/gcc-svn/trunk/gcc/. -I/cvs/gcc-svn/trunk/gcc/../include -I/cvs/gcc-svn/trunk/gcc/../libcpp/include -I/cvs/gcc-svn/trunk/gcc/../libdecnumber -I../libdecnumber -iprefix /builds/gcc/misc/gcc/../lib/gcc/x86_64-suse-linux-gnu/4.2.0/ -isystem /builds/gcc/misc/./gcc/include -DIN_GCC -DCRT_BEGIN -DCRTSTUFFT_O -isystem /opt/gcc/4.2-devel/x86_64-suse-linux-gnu/include -isystem /opt/gcc/4.2-devel/x86_64-suse-linux-gnu/sys-include -isystem ./include /cvs/gcc-svn/trunk/gcc/crtstuff.c -mtune=generic -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -finhibit-size-directive -fno-inline-functions -fno-exceptions -fno-zero-initialized-in-bss -fno-toplevel-reorder -fno-omit-frame-pointer -fno-asynchronous-unwind-tables -O2 -O2 -O2 -fpch-preprocess -o crtstuff.i ignoring nonexistent directory "/opt/gcc/4.2-devel/x86_64-suse-linux-gnu/include" ignoring nonexistent directory "/opt/gcc/4.2-devel/x86_64-suse-linux-gnu/sys-include" ignoring duplicate directory "./include" ignoring nonexistent directory "/builds/gcc/misc/gcc/../lib/gcc/x86_64-suse-linux-gnu/4.2.0/include" ignoring nonexistent directory "/builds/gcc/misc/gcc/../lib/gcc/x86_64-suse-linux-gnu/4.2.0/../../../../x86_64-suse-linux-gnu/include" ignoring nonexistent directory "/opt/gcc/4.2-devel/lib/gcc/x86_64-suse-linux-gnu/4.2.0/../../../../x86_64-suse-linux-gnu/include" ignoring duplicate directory "." ignoring duplicate directory "/cvs/gcc-svn/trunk/gcc/." #include "..." search starts here: #include <...> search starts here: . /cvs/gcc-svn/trunk/gcc /cvs/gcc-svn/trunk/gcc/../include /cvs/gcc-svn/trunk/gcc/../libcpp/include /cvs/gcc-svn/trunk/gcc/../libdecnumber ../libdecnumber /builds/gcc/misc/./gcc/include /usr/local/include /opt/gcc/4.2-devel/include /opt/gcc/4.2-devel/lib/gcc/x86_64-suse-linux-gnu/4.2.0/include /usr/include End of search list. /builds/gcc/misc/./gcc/cc1 -fpreprocessed crtstuff.i -quiet -dumpbase crtstuff.c -mtune=generic -auxbase-strip crtbeginT.o -g -g0 -O2 -O2 -O2 -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -version -finhibit-size-directive -fno-inline-functions -fno-exceptions -fno-zero-initialized-in-bss -fno-toplevel-reorder -fno-omit-frame-pointer -fno-asynchronous-unwind-tables -o crtstuff.s GNU C version 4.2.0 20060123 (experimental) (x86_64-suse-linux-gnu) compiled by GNU C version 4.0.2 20050901 (prerelease) (SUSE Linux). GGC heuristics: --param ggc-min-expand=0 --param ggc-min-heapsize=0 Compiler executable checksum: 0ff067d69399051f4d09b6722bab4610 /cvs/gcc-svn/trunk/gcc/crtstuff.c:345: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://gcc.gnu.org/bugs.html> for instructions. [EMAIL PROTECTED]:/builds/gcc/misc/gcc> gdb /builds/gcc/misc/./gcc/cc1 GNU gdb 6.3 Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "x86_64-suse-linux"...Using host libthread_db library "/lib64/tls/libthread_db.so.1". Breakpoint 1 at 0x6f5b63: file /cvs/gcc-svn/trunk/gcc/diagnostic.c, line 642. Breakpoint 2 at 0x6f5979: file /cvs/gcc-svn/trunk/gcc/diagnostic.c, line 586. Function "exit" not defined. Function "abort" not defined. (gdb) r -fpreprocessed crtstuff.i -quiet -dumpbase crtstuff.c -mtune=generic -auxbase-strip crtbeginT.o -g -g0 -O2 -O2 -O2 -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -version -finhibit-size-directive -fno-inline-functions -fno-exceptions -fno-zero-initialized-in-bss -fno-toplevel-reorder -fno-omit-frame-pointer -fno-asynchronous-unwind-tables -o crtstuff.s Starting program: /builds/gcc/misc/gcc/cc1 -fpreprocessed crtstuff.i -quiet -dumpbase crtstuff.c -mtune=generic -auxbase-strip crtbeginT.o -g -g0 -O2 -O2 -O2 -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -version -finhibit-size-directive -fno-inline-functions -fno-exceptions -fno-zero-initialized-in-bss -fno-toplevel-reorder -fno-omit-frame-pointer -fno-asynchronous-unwind-tables -o crtstuff.s GNU C version 4.2.0 20060123 (experimental) (x86_64-suse-linux-gnu) compiled by GNU C version 4.0.2 20050901 (prerelease) (SUSE Linux). GGC heuristics: --param ggc-min-expand=0 --param ggc-min-heapsize=0 Compiler executable checksum: 0ff067d69399051f4d09b6722bab4610 Program received signal SIGSEGV, Segmentation fault. 0x0000000000fce8ea in assemble_asm (string=0xa5a5a5a5a5a5a5a5) at /cvs/gcc-svn/trunk/gcc/varasm.c:885 885 if (TREE_CODE (string) == ADDR_EXPR) (gdb) bt #0 0x0000000000fce8ea in assemble_asm (string=0xa5a5a5a5a5a5a5a5) at /cvs/gcc-svn/trunk/gcc/varasm.c:885 #1 0x00000000010a4558 in cgraph_output_in_order () at /cvs/gcc-svn/trunk/gcc/cgraphunit.c:1263 #2 0x00000000010a4c82 in cgraph_optimize () at /cvs/gcc-svn/trunk/gcc/cgraphunit.c:1426 #3 0x000000000042895a in c_write_global_declarations () at /cvs/gcc-svn/trunk/gcc/c-decl.c:7804 #4 0x0000000000f8fe7e in compile_file () at /cvs/gcc-svn/trunk/gcc/toplev.c:1003 #5 0x0000000000f91875 in do_compile () at /cvs/gcc-svn/trunk/gcc/toplev.c:1948 #6 0x0000000000f918d9 in toplev_main (argc=30, argv=0x7ffffff2c3b8) at /cvs/gcc-svn/trunk/gcc/toplev.c:1980 #7 0x00000000004b84bb in main (argc=30, argv=0x7ffffff2c3b8) at /cvs/gcc-svn/trunk/gcc/main.c:35 -- Summary: sigsegv with full --enable-checking Product: gcc Version: 4.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: bootstrap AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: aj at gcc dot gnu dot org GCC build triplet: x86_64-linux-gnu GCC host triplet: x86_64-linux-gnu GCC target triplet: x86_64-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25930