Re: bug#6214: 23.1; json-read-string crashes emacs with long string

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+From: Chong Yidong <cyd@stupidchicken.com>\r
+To: Andreas Schwab <schwab@linux-m68k.org>\r
+Subject: Re: bug#6214: 23.1; json-read-string crashes emacs with long string\r
+References: <87pr0t5h1q.fsf@yoom.home.cworth.org>\r
+       <87fx1pkrsh.fsf@stupidchicken.com> <87tymzv6ga.fsf@steelpick.2x.cz>\r
+       <878w4afozw.fsf@stupidchicken.com> <87sk2hbq3s.fsf@steelpick.2x.cz>\r
+       <8739ug3mrr.fsf@stupidchicken.com> <87r5i02uo7.fsf@steelpick.2x.cz>\r
+       <874oeuv4le.fsf@stupidchicken.com> <87fwye2sxt.fsf@steelpick.2x.cz>\r
+       <87pqxhmg0i.fsf@stupidchicken.com> <87sk2dxl01.fsf@stupidchicken.com>\r
+       <m2y6c5ez3r.fsf@igel.home>\r
+Date: Tue, 17 Aug 2010 17:46:57 -0400\r
+In-Reply-To: <m2y6c5ez3r.fsf@igel.home> (Andreas Schwab's message of "Tue, 17\r
+       Aug 2010 22:57:44 +0200")\r
+Message-ID: <87wrroj4j2.fsf@stupidchicken.com>\r
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+Cc: 6214@debbugs.gnu.org, Notmuch mailing list <notmuch@notmuchmail.org>,\r
+       Stefan Monnier <monnier@iro.umontreal.ca>\r
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+\r
+Andreas Schwab <schwab@linux-m68k.org> writes:\r
+\r
+> Chong Yidong <cyd@stupidchicken.com> writes:\r
+>\r
+>> Never mind, I got confused.  SAFE_ALLOCA uses record_unwind_protect, so\r
+>> it's gc safe.\r
+>\r
+> No, it isn't.  SAFE_ALLOCA only protects the memory block, you need to\r
+> use SAVE_ALLOCA_LISP to protect also its contents.\r
+\r
+Ah, OK.  Thanks.\r