Hello world segfaults with -static

Wed Oct 10 09:26:00 GMT 2001

That's a new one for me. And I don't have clue as to how that could happen.
With only a single entry in the table, GC_next_exclusion should return
either 0 or the address of the zeroth entry in GC_excl_table. It looks to
me like next_index can be only 0 or 1.
Can you build mark_rts.c unoptimized? If that still breaks, can you step
through GC_exclude_static_roots to see where I'm wrong?
Hans
> -----Original Message-----
> From: Martin Kahlert [ mailto:martin.kahlert@infineon.com ]
> Sent: Wednesday, October 10, 2001 6:47 AM
> To: java@gcc.gnu.org
> Subject: Hello world segfaults with -static
>>> Hi!
>> I do not have any idea, why this segfaults:
>> public class hello
> {
> public static void main(String[] args)
> {
> System.out.println("Hello World");
> }
> }
>> $ gcj -static -g -o hello hello.java --main=hello
> $ ./hello
> Segmentation fault
>> gdb's output: (although it strangly jumps around in the source)
>> next_index = 11163 when there is only one entry 
> (GC_excl_table_entries=1)????
>> Program received signal SIGSEGV, Segmentation fault.
> 0x80f3edc in GC_exclude_static_roots (start=0x81c18c0, 
> finish=0x81c1a00) at
> ../../../gcc-3.1/boehm-gc/mark_rts.c:412
> 412 GC_excl_table[next_index].e_start = (ptr_t)start;
> (gdb) where
> #0 0x80f3edc in GC_exclude_static_roots (start=0x81c18c0, 
> finish=0x81c1a00) at ../../../gcc-3.1/boehm-gc/mark_rts.c:412
> #1 0x80f46a1 in GC_init_inner () at 
> ../../../gcc-3.1/boehm-gc/misc.c:516
> #2 0x80f452b in GC_init () at ../../../gcc-3.1/boehm-gc/misc.c:442
> #3 0x80ee6bf in GC_init_gcj_malloc (mp_index=0, 
> mp=0x80916f0) at ../../../gcc-3.1/boehm-gc/gcj_mlc.c:59
> #4 0x809238a in _Z10_Jv_InitGCv () at 
> ../../../gcc-3.1/libjava/boehm.cc:491
> #5 0x805f321 in _Jv_RegisterClasses (classes=0x81cab18) at 
> ../../../gcc-3.1/libjava/java/lang/natClassLoader.cc:435
> #6 0x80481e9 in frame_dummy ()
> #7 0x80480d1 in _init ()
> #8 0x8106a99 in __libc_start_main (main=0x80481f4 <main>, argc=1,
> ubp_av=0xbffff3b4, init=0x80480b4 <_init>, fini=0x81510e0 <_fini>,
> rtld_fini=0, stack_end=0xbffff3ac) at 
> ../sysdeps/generic/libc-start.c:122
>> This is current cvs.
> Reading specs from /sw/gcc-3.1/lib/gcc-lib/i686-pc-linux-gnu/3.1/specs
> Configured with: ../gcc-3.1/configure --prefix=/sw/gcc-3.1
> --enable-languages=c++,f77,java --enable-threads=posix
> Thread model: posix
> gcc version 3.1 20011010 (experimental)
>> Thanks for any hint,
> Martin.
>> PS: It works like a charm when you omit -static.
>> -- 
> The early bird catches the worm. If you want something else for 
> breakfast, get up later.
>