From 73b88f6be8dfd4cd28d184872e518606a547d4bb Mon Sep 17 00:00:00 2001
From: akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 14 Dec 2005 16:37:56 +0000
Subject: [PATCH] * ext/zlib/zlib.c (zstream_run): fix a GC problem by tail
 call on   x86_64 with gcc 4.0.3 20051111 (prerelease) (Debian 4.0.2-4)

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@9691 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog       | 5 +++++
 ext/zlib/zlib.c | 1 +
 2 files changed, 6 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index ea2a7b53de..16199aa465 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Dec 15 01:33:31 2005  Tanaka Akira  <akr@m17n.org>
+
+	* ext/zlib/zlib.c (zstream_run): fix a GC problem by tail call on
+	  x86_64 with gcc 4.0.3 20051111 (prerelease) (Debian 4.0.2-4)
+
 Wed Dec 14 23:50:20 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* lib/rdoc/parsers/parse_c.rb (find_class_comment): fix for class
diff --git a/ext/zlib/zlib.c b/ext/zlib/zlib.c
index b05e5264c5..923e3a72bb 100644
--- a/ext/zlib/zlib.c
+++ b/ext/zlib/zlib.c
@@ -762,6 +762,7 @@ zstream_run(z, src, len, flush)
     zstream_reset_input(z);
     if (z->stream.avail_in > 0) {
 	zstream_append_input(z, z->stream.next_in, z->stream.avail_in);
+        guard = Qnil; /* prevent tail call to make guard effective */
     }
 }