From b596fbbc375ea58aa2b869cb6025b2bb101f96b9 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 23 Apr 2002 16:22:25 +0000
Subject: * ext/stringio/stringio.c (strio_mark): must check if ptr is NULL  
 first.  [ruby-talk:38873]

* lib/mkmf.rb (create_makefile): should print depend file when
  make is other than nmake.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2399 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/stringio/stringio.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'ext/stringio/stringio.c')

diff --git a/ext/stringio/stringio.c b/ext/stringio/stringio.c
index 11fe8ef455..07ee38dd48 100644
--- a/ext/stringio/stringio.c
+++ b/ext/stringio/stringio.c
@@ -53,7 +53,9 @@ static void
 strio_mark(ptr)
     struct StringIO *ptr;
 {
-    rb_gc_mark(ptr->string);
+    if (ptr) {
+	rb_gc_mark(ptr->string);
+    }
 }
 
 static void
@@ -181,7 +183,6 @@ static VALUE
 strio_s_allocate(klass)
     VALUE klass;
 {
-    struct StringIO *ptr;
     return Data_Wrap_Struct(klass, strio_mark, strio_free, 0);
 }
 
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