[Xapian-discuss] Quartzcompact in svn-6307 fails

[Arjen van der Meijden]

Hi List,

I'm trying to test some of Olly's changes to the compaction of quartz, 
but appareantly quartzcompact just doesn't work at all, or of course my 
installation is bugged.

I've installed svn-6703 on a gentoo system which is quite up-to-date in 
terms of gcc (3.3)/glibc versions.

When I do quartzcompact on our (with 0.8.4) compacted database without 
any parameters it just says 'aborted' right after it started, with the 
-n and -F parameters the same.
But with -F and -n combined, it segfaults with this backtrace:

#0  0xb7cf6003 in memmove () from /lib/libc.so.6
#1  0xb7ee0cdc in Btree::compact (this=0xbfffe780, p=0x8057fa8 
"\004\026ó\026â\026Ñ\026À\026¯\237") at btree.h:181
#2  0xb7ee15f0 in Btree::add_item (this=0xbfffe780, j=0) at btree.cc:832
#3  0xb7ee1b7f in Btree::add_kt (this=0xbfffe780, found=false) at 
btree.cc:998
#4  0xb7ee222f in Btree::add (this=0xbfffe780, key=@0xbfffe6b0, tag=
         {static npos = 4294967295, _M_dataplus = 
{<std::allocator<char>> = {<No data fields>}, _M_p = 0x9933604 
"0ÁÙsÖg\031\006à÷¾\237ç]~k¾\225%!ù\022Ö\202[gz \036zæ8\036iGÏìxä_à9\b\tiÙl-K\206P\022hBR(\001\212`\233\226\220\022\004\202a\215\220\202,\205VIJ\b\230\020¤\004¯ëÕ]su«\003\207¾cxA\fÆ~\"<ã\n\030QÏ}³(×\003±6f|³\222£¯ê¥}1y½\txË:<.:\214'\022uüÎù·¬ ­\024ã\223ï+7åF\2360`\225\032\214ý0E¯\032|í\0036,\0057\004+_/\024yâ\224Ói\214¾F`4\006\216X\207ñL²S¯\n\016.\t8\022\203×\002Ù]"...}, 
static _S_empty_rep_storage = {0, 0, 0, 0}}) at btree.cc:1152
#5  0x0804cd03 in main (argc=2, argv=0xbfffea44) at quartzcompact.cc:370

The aborted of course looks like this:
postlist ...Aborted

When I compact a test-database with a very simple set of data, 
quartzcompact does work, also with -F and -n.

Best regards,

Arjen