Subject: bug#25479: closed (Re: bug#25479: memory leaks in dfa)

From: [email-masked] (GNU bug Tracking System)
Date: Thu, 19 Jan 2017 00:47:02 +0000

Your bug report

#25479: memory leaks in dfa

which was filed against the grep package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to [email-masked].

-- 
25479: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=25479
GNU Bug Tracking System
Contact [email-masked] with problems

Subject: Re: bug#25479: memory leaks in dfa
From: Paul Eggert <[email-masked]>
To: Norihiro Tanaka <[email-masked]>, Arnold Robbins <[email-masked]>
Cc: [email-masked], [email-masked]
Date: Wed, 18 Jan 2017 16:45:56 -0800
List-Id: <debbugs-submit.debbugs.gnu.org>

Thanks for the fix; I installed it into gnulib and am closing this bug
report.

Subject: memory leaks in dfa
From: Arnold Robbins <[email-masked]>
To: [email-masked]
Date: Wed, 18 Jan 2017 23:11:28 +0200
List-Id: <debbugs-submit.debbugs.gnu.org>

Hi Grep Guys.

Please:

	clone gawk repo
	cd gawk
	./bootstrap.sh && ./configure && make -j
	make valgrind

Look at the 'definitely lost' lines.  For example:

==30472== 240 bytes in 2 blocks are definitely lost in loss record 128 of 170
==30472==    at 0x4C2DB8F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64
-linux.so)
==30472==    by 0x44D42A: emalloc_real (awk.h:1923)
==30472==    by 0x44D42A: xmalloc (gawkmisc.c:57)
==30472==    by 0x468806: xnmalloc (xalloc.h:134)
==30472==    by 0x468806: alloc_position_set (dfa.c:2057)
==30472==    by 0x468D93: epsclosure (dfa.c:2272)
==30472==    by 0x468D93: dfaanalyze (dfa.c:2601)
==30472==    by 0x46CA84: dfacomp (dfa.c:3531)
==30472==    by 0x463284: make_regexp (re.c:231)
==30472==    by 0x414548: make_regnode (awkgram.y:5005)
==30472==    by 0x416A33: yyparse (awkgram.y:505)
==30472==    by 0x41C9E3: parse_program (awkgram.y:2580)
==30472==    by 0x40D373: main (main.c:459)

There may be other paths as well.

Can y'all track this down and fix?

Thanks,

Arnold