Re: ICE in cpp with

[Neil Booth <NeilB at earthling dot net>]

Hi Andreas,

I'd like to help you fix this - it's my code - but I can't reproduce
it with that input on my Linux box.  Could you trim the command line
as short as possible, maybe to just the -A asserts, so that it still
happens.  Then send me the command line.

Alternatively, if you could tell me which line in _cpp_parse_assertion
it's failing on, and the contents of some variables at that point
(e.g. token) it would help a *lot*.  (so at least we know which -A
option it's barfing on).

Thanks,

Neil.

Andreas Jaeger wrote:-
> 
> Compiling the current CVS version on mipsel-linux I get an ICE in cpp
> during bootstrap:
> 
> echo "int xxy_us_dummy;" >tmp-dum.c
> ./xgcc -B/opt/gcc-2.96/mipsel-unknown-linux-gnu/bin/ -B./ -isystem /opt/gcc-2.96/mipsel-unknown-linux-gnu/include -S tmp-dum.c
> xgcc: Internal compiler error: program cpp got fatal signal 11
> 
> I'm appending below some output from gcc and gdb in the hope that this
> gives somebody an idea how to fix this.
> 
> Andreas
> 
> $ ./xgcc -B/opt/gcc-2.96/mipsel-unknown-linux-gnu/bin/ -B./ -isystem /opt/gcc-2.96/mipsel-unknown-linux-gnu/include -S tmp-dum.c -save-temps -v
> Reading specs from ./specs
> gcc version 2.96 20000704 (experimental)
>  ./cpp -lang-c -v -iprefix ./../lib/gcc-lib/mipsel-unknown-linux-gnu/2.96/ -isystem ./include -isystem /opt/gcc-2.96/mipsel-unknown-linux-gnu/bin/include -D__GNUC__=2 -D__GNUC_MINOR__=96 -D__GNUC_PATCHLEVEL__=0 -DMIPSEL -D_MIPSEL -Dunix -Dmips -D_mips -DR3000 -D_R3000 -Dlinux -D__ELF__ -D__PIC__ -D__pic__ -D__MIPSEL__ -D_MIPSEL -D__unix__ -D__mips__ -D__mips__ -D__R3000__ -D_R3000 -D__linux__ -D__ELF__ -D__PIC__ -D__pic__ -D__MIPSEL -D__unix -D__mips -D__mips -D__R3000 -D__linux -Asystem(posix) -Acpu(mips) -Amachine(mips) -D__LANGUAGE_C -D_LANGUAGE_C -DLANGUAGE_C -D__SIZE_TYPE__=unsigned int -D__PTRDIFF_TYPE__=int -D_MIPS_FPSET=32 -D_MIPS_ISA=_MIPS_ISA_MIPS3 -D_ABIN32=2 -D_MIPS_SIM=_ABIN32 -D_MIPS_SZINT=32 -D_MIPS_SZLONG=32 -D_MIPS_SZPTR=32 -U__mips -D__mips -U__mips64 -isystem /opt/gcc-2.96/mipsel-unknown-linux-gnu/include tmp-dum.c tmp-dum.i
> GNU CPP version 2.96 20000704 (experimental) (cpplib)
>  (MIPSel GNU/ELF)
> ignoring nonexistent directory "/opt/gcc-2.96/mipsel-unknown-linux-gnu/bin/include"
> ignoring nonexistent directory "../lib/gcc-lib/mipsel-unknown-linux-gnu/2.96/include"
> ignoring nonexistent directory "../mipsel-unknown-linux-gnu/include"
> ignoring nonexistent directory "/usr/local/include"
> ignoring duplicate directory "/opt/gcc-2.96/mipsel-unknown-linux-gnu/include"
> #include "..." search starts here:
> #include <...> search starts here:
>  include
>  /opt/gcc-2.96/mipsel-unknown-linux-gnu/include
>  /opt/gcc-2.96/lib/gcc-lib/mipsel-unknown-linux-gnu/2.96/include
>  /usr/include
> End of search list.
> xgcc: Internal compiler error: program cpp got fatal signal 11
> 
> [aj gcc]$ gdb ./cpp core 
> GNU gdb 4.17
> Copyright 1998 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 "mipsel-redhat-linux"...
> Core was generated by `./cpp -lang-c -v -iprefix ./../lib/gcc-lib/mipsel-unknown-linux-gnu/2.96/ -isys'.
> Program terminated with signal 11, Segmentation fault.
> find_solib: Can't read pathname for load map: Input/output error
> 
> 
> warning: Hit heuristic-fence-post without finding
> 
> warning: enclosing function for address 0x282ab138
> This warning occurs if you are debugging a function without any symbols
> (for example, in a stripped executable).  In that case, you may wish to
> increase the size of the search with the `set heuristic-fence-post' command.
> 
> Otherwise, you told GDB there was a function where there isn't one, or
> (more likely) you have encountered a bug in GDB.
> #0  0x282ab138 in ?? ()
> Breakpoint 1 at 0x421af0
> .gdbinit:3: Error in sourced command file:
> /home/sites/home/users/aj/cvs/gcc/gcc/.gdbinit:92: Error in sourced command file:
> Function "fancy_abort" not defined.
> (gdb) bt
> #0  0x282ab138 in ?? ()
> #1  0x41535c in _cpp_parse_assertion (pfile=0x10032a40, answerp=0x7ffff7e0)
>     at /home/sites/home/users/aj/cvs/gcc/gcc/cpplib.c:1331
> #2  0x4154b8 in do_assert (pfile=0x10032a40) at /home/sites/home/users/aj/cvs/gcc/gcc/cpplib.c:1364
> #3  0x41121c in _cpp_run_directive (pfile=0x10032a40, dir=0x10032580, buf=0x8 "マ", count=3)
>     at /home/sites/home/users/aj/cvs/gcc/gcc/cpplex.c:3352
> #4  0x4159f4 in cpp_assert (pfile=0x10032a40, str=0x7ffffc8b "machine(mips)")
>     at /home/sites/home/users/aj/cvs/gcc/gcc/cpplib.c:1487
> #5  0x408dd8 in cpp_start_read (pfile=0x10032a40, print=0x10032b50, fname=0x7ffffdcd "tmp-dum.c")
>     at /home/sites/home/users/aj/cvs/gcc/gcc/cppinit.c:966
> #6  0x406a04 in main (argc=62, argv=0x10032b50) at /home/sites/home/users/aj/cvs/gcc/gcc/cppmain.c:73
> 
> -- 
>  Andreas Jaeger
>   SuSE Labs aj@suse.de
>    private aj@arthur.inka.de
>