From 4605d6bc417b0fcbcc29e8f5a35f127c404aa938 Mon Sep 17 00:00:00 2001
From: ocean <ocean@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 18 Apr 2005 02:34:20 +0000
Subject: * ext/zlib/zlib.c (zstream_run): fixed SEGV. [ruby-core:4712]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@8345 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/zlib/zlib.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'ext')

diff --git a/ext/zlib/zlib.c b/ext/zlib/zlib.c
index 15f90681f8..b05e5264c5 100644
--- a/ext/zlib/zlib.c
+++ b/ext/zlib/zlib.c
@@ -709,6 +709,7 @@ zstream_run(z, src, len, flush)
 {
     uInt n;
     int err;
+    volatile VALUE guard;
 
     if (NIL_P(z->input) && len == 0) {
 	z->stream.next_in = "";
@@ -718,6 +719,10 @@ zstream_run(z, src, len, flush)
 	zstream_append_input(z, src, len);
 	z->stream.next_in = RSTRING(z->input)->ptr;
 	z->stream.avail_in = RSTRING(z->input)->len;
+	/* keep reference to `z->input' so as not to be garbage collected
+	   after zstream_reset_input() and prevent `z->stream.next_in'
+	   from dangling. */
+	guard = z->input;
     }
 
     if (z->stream.avail_out == 0) {
-- 
cgit v1.2.3