PATCH: Re: ../../../libio/stream.cc:60: Internal error: Segmentation fault.

[John David Anglin]

> Program received signal SIGSEGV, Segmentation fault.
> 0x81df1aa in do_compare_and_jump (exp=0x40536de0, signed_code=GT,
>     unsigned_code=GTU, if_false_label=0x40533e80, if_true_label=0x0)
>     at ../../gcc/expr.c:10066
> 10066                 > GET_MODE_BITSIZE (TREE_TYPE (TREE_OPERAND (exp, 1))))))
> (gdb) disass 0x81df1aa 0x81df1b0
> Dump of assembler code from 0x81df1aa to 0x81df1b0:
> 0x81df1aa <do_compare_and_jump+842>:    mov    0x843d520(,%eax,4),%eax
> End of assembler dump.
> (gdb) info reg eax
> eax            0x40155400       1075139584
> 
> I think one of the changes in the last week has caused this.

The enclosed patch appears to fix the problem.  The bootstrap and check
now completes under i686 linux.  However, there are a huge number of
failures in g++ related tests.  For example,

spawn /home/dave/gnu/gcc-2.97/objdir/gcc/testsuite/../g++ -B/home/dave/gnu/gcc-2
.97/objdir/gcc/testsuite/../ /home/dave/gnu/gcc-2.97/gcc/testsuite/g++.old-deja/
g++.brendan/copy3.C -I/home/dave/gnu/gcc-2.97/libstdc++ -I/home/dave/gnu/gcc-2.9
7/libstdc++/stl -fmessage-length=0 -ansi -pedantic-errors -Wno-long-long -I/home
/dave/gnu/gcc-2.97/libio -I/home/dave/gnu/gcc-2.97/objdir/i686-pc-linux-gnu/libi
o -lstdc++ -L/home/dave/gnu/gcc-2.97/objdir/i686-pc-linux-gnu//libstdc++ -L/home
/dave/gnu/gcc-2.97/objdir/i686-pc-linux-gnu//libiberty -lm -pthread -o /home/dav
e/gnu/gcc-2.97/objdir/gcc/testsuite/g++-brendan-copy3-C
/home/dave/gnu/gcc-2.97/objdir/i686-pc-linux-gnu//libstdc++/libstdc++.a(exceptio
n.o): In function `_ZNK9exception4whatEv':
/home/dave/gnu/gcc-2.97/objdir/i686-pc-linux-gnu/libstdc++/../../../libstdc++/ex
ception.cc:403: undefined reference to `__cxa_bad_typeid'
/home/dave/gnu/gcc-2.97/objdir/i686-pc-linux-gnu//libstdc++/libstdc++.a(tinfo2.o
): In function `_ZNK10__cxxabiv117__pbase_type_info10__do_catchEPK9type_infoPPvj
':
/home/dave/gnu/gcc-2.97/objdir/i686-pc-linux-gnu/libstdc++/../../../libstdc++/ti
nfo2.cc:176: undefined reference to `__cxa_bad_typeid'
/home/dave/gnu/gcc-2.97/objdir/i686-pc-linux-gnu/libstdc++/../../../libstdc++/ti
nfo2.cc:176: undefined reference to `__cxa_bad_typeid'
collect2: ld returned 1 exit status

Please review for installation.

Dave
-- 
J. David Anglin                                  dave.anglin@nrc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6605)