| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Teodor Sigaev <teodor(at)sigaev(dot)ru> |
| Cc: | hubert depesz lubaczewski <depesz(at)gmail(dot)com>, Postgres General <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: postgresql 8.2 rc1 - crash |
| Date: | 2006-11-30 15:03:20 |
| Message-ID: | 13096.1164899000@sss.pgh.pa.us |
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| Lists: | pgsql-general |
Teodor Sigaev <teodor(at)sigaev(dot)ru> writes:
>> #1 0x080bc224 in PageDeletePostingItem (page=0xb28039a0 "\020",
>> offset=53719) at gindatapage.c:291
>> #2 0x080bf558 in ginDeletePage (gvs=0xbfc2ab80, deleteBlkno=29194,
>> leftBlkno=29059, parentBlkno=70274, myoff=351, isParentRoot=0 '\0') at
>> ginvacuum.c:268
> Are you sure about your hardware? myoff in ginDeletePage() and offset in
> PageDeletePostingItem are the same variable...
That sort of thing isn't unusual when looking at dumps with an optimized
executable. gdb has only a limited view of what the compiler is doing,
and frequently will think that register N contains a variable when in
fact that register gets re-used for several different purposes within
the function.
regards, tom lane
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