From:	"Chad Rabbitt" <chad AT rabbitt DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	sigsegv on delete []
Date:	11 Jan 2000 01:16:55 EST
Organization:	Concentric Internet Services
Lines:	26
Message-ID:	<85ehsn$p0p@chronicle.concentric.net>
NNTP-Posting-Host:	ts002d06.lon-co.concentric.net
X-Priority:	3
X-MSMail-Priority:	Normal
X-Newsreader:	Microsoft Outlook Express 5.00.2314.1300
X-MimeOLE:	Produced By Microsoft MimeOLE V5.00.2314.1300
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

i am wondering if anyone might have any ideas on a sigsegv that occurs on a
delete []?  after looking around, it seems i either overran the array at
some point and then when it gets deleted the problem shows up, or i delete
the same array more than once.  unfortunately, my co-worker and i can not
find either of these problems in my code.  i also used gdb and saw no data
being modified before or after the array, except for the 'in-use' bit by the
memory manager.  other notes, the delete [] statement is located in a class
destructor with three other delete [] statement before it.  the destructor
works correctly at least one time, usually more than 3 times, depending on
the computer i run the program on.  also, if i remove the delete statement
altogether, the program sigsegv's upon exiting the destructor, but before
returning to the calling statement.  i don't have the traceback in front of
me, but it generally goes:

   0x.....  _free+somenumber
   0x.....  ___builtin_vec_delete+somenumber, line 0 of new2.cc
   0x.....  _$_9destructorname+somenumber, line 50 of classfile.cpp
   etc...

curious if anyone might have some ideas.  i've also tried taking all the
code that accesses the array out, and i still get a sigsegv?  thanks,

Chad

- Raw text -