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From: Tom Tromey <tromey@redhat.com> To: nobody@gcc.gnu.org Cc: gcc-prs@gcc.gnu.org, Subject: Re: java/6092: sparc-sun-solaris2.7 has hundreds of libjava failu res with -m64 Date: Mon, 15 Apr 2002 14:46:00 -0000 [thread overview] Message-ID: <20020415214604.4671.qmail@sources.redhat.com> (raw) The following reply was made to PR java/6092; it has been noted by GNATS. From: Tom Tromey <tromey@redhat.com> To: "Boehm, Hans" <hans_boehm@hp.com> Cc: "Kaveh R. Ghazi" <ghazi@caip.rutgers.edu>, gcc-gnats@gcc.gnu.org Subject: Re: java/6092: sparc-sun-solaris2.7 has hundreds of libjava failu res with -m64 Date: 15 Apr 2002 15:41:52 -0600 Hans> That line in GC_stopped_mark calls GC_mark_some. Thus I would Hans> conclude that this version of gdb is only partially functional, Hans> and it actually dies somewhere in GC_mark_some(). I agree. Hans> A possible cause of that is confusion about where the roots are. Hans> If you can check GC_stackbottom, check that the collector and Hans> libgcj configuration agree on threads, get GC_dump() output, and Hans> check the root locations against the nm output that might Hans> identify something. Otherwise we need better debug information. In order to reduce the number of variables a bit, I tried gctest. I got the same problem. Here's some info. (gdb) call GC_dump() ***Static roots: From 0x100106000 to 0x10012d8b8 Total size: 161976 ***Heap sections: Total heap size: 131072 Section 0 from 0x100178000 to 0x100198000 0/16 blacklisted ***Free blocks: Free list 16 (Total size 131072): 0x100178000 size 131072 not black listed Total of 131072 bytes on free list ***Blocks in use: (kind(0=ptrfree,1=normal,2=unc.,3=stubborn):size_in_bytes, #_marks_set) blocks = 0, bytes = 0 (gdb) p GC_stackbottom $3 = 0xffffffff80000000 <Address 0xffffffff80000000 out of bounds> I dug through the source a bit. I think this machine doesn't define USERLIMIT (a simple test program fails), so we must be using HEURISTIC2. When using nm what am I looking for? I looked at one global, GC_gc_no. Its address falls into the range that GC_dump prints for the static roots. Should I do this comparison for all the globals? Tom
next reply other threads:[~2002-04-15 21:46 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2002-04-15 14:46 Tom Tromey [this message] -- strict thread matches above, loose matches on Subject: below -- 2002-04-15 20:06 Boehm, Hans 2002-04-15 16:46 Boehm, Hans 2002-04-11 11:46 Boehm, Hans
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