Re: libjava failed to build on Linux/x86

[Tom Tromey <tromey at redhat dot com>]

>>>>> "Tom" == Tom Tromey <tromey@redhat.com> writes:

Tom> I suspect a non-gcj compiler bug.  I built code with a compiler which
Tom> was current as of last week sometime.  I imagine some bug was
Tom> introduced or revealed between then and now.  I've updated and I'm
Tom> rebuilding to see if I can reproduce the problem here.

I reproduced the crash here.
I've appended a stack trace.
The proximate problem is that `e->dest' is 0.

This is really outside my area of expertise.  All I know is that this
was working fine with the Jan 4 compiler.

Tom

Program received signal SIGSEGV, Segmentation fault.
0x0826d2f7 in find_unreachable_blocks () at ../../gcc/gcc/cfganal.c:363
363		if (!(e->dest->flags & BB_REACHABLE))
(gdb) bt
#0  0x0826d2f7 in find_unreachable_blocks () at ../../gcc/gcc/cfganal.c:363
#1  0x08271f51 in delete_unreachable_blocks ()
    at ../../gcc/gcc/cfgcleanup.c:1715
#2  0x08271fca in cleanup_cfg (mode=0) at ../../gcc/gcc/cfgcleanup.c:1743
#3  0x08231de9 in rest_of_compilation (decl=0x4014df68)
    at ../../gcc/gcc/toplev.c:3270
#4  0x08061a4c in source_end_java_method () at parse.y:7457
#5  0x08063935 in java_expand_method_bodies (class=0x857ef44) at parse.y:8133
#6  0x0806677d in java_expand_classes () at parse.y:9024
#7  0x080a9a1f in yyparse () at ../../gcc/gcc/java/jcf-parse.c:1207
#8  0x08230384 in compile_file () at ../../gcc/gcc/toplev.c:2122
#9  0x08235ae9 in do_compile () at ../../gcc/gcc/toplev.c:5177
#10 0x08235b4b in toplev_main (argc=0, argv=0x0) at ../../gcc/gcc/toplev.c:5209
#11 0x080bb3fb in main (argc=0, argv=0x0) at ../../gcc/gcc/main.c:35
#12 0x400349cb in __libc_start_main (main=0x80bb3e0 <main>, argc=24, 
    argv=0xbffff644, init=0x8049328 <_init>, fini=0x82f4e38 <_fini>, 
    rtld_fini=0x4000ae60 <_dl_fini>, stack_end=0xbffff63c)
    at ../sysdeps/generic/libc-start.c:92