usa	2011-03-08 16:52:19 +0900 (Tue, 08 Mar 2011)

  New Revision: 31063

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=31063

  Log:
    * hash.c (ruby_setenv): MSDN says that Windows XP or earlier limits
      the total size of environment block to 5,120 chars.  and on such
      OS, putenv() causes SEGV.  So, ruby should limit the size of an
      environment variable to 5,120 bytes for workaround.

  Modified files:
    trunk/ChangeLog
    trunk/hash.c

Index: ChangeLog
===================================================================
--- ChangeLog	(revision 31062)
+++ ChangeLog	(revision 31063)
@@ -1,3 +1,10 @@
+Tue Mar  8 16:45:31 2011  NAKAMURA Usaku  <usa@r...>
+
+	* hash.c (ruby_setenv): MSDN says that Windows XP or earlier limits
+	  the total size of environment block to 5,120 chars.  and on such
+	  OS, putenv() causes SEGV.  So, ruby should limit the size of an
+	  environment variable to 5,120 bytes for workaround.
+
 Tue Mar  8 15:57:20 2011  NAKAMURA Usaku  <usa@r...>
 
 	* test/rubygems/test_gem_spec_fetcher.rb
Index: hash.c
===================================================================
--- hash.c	(revision 31062)
+++ hash.c	(revision 31063)
@@ -2206,6 +2206,7 @@
 	rb_sys_fail("ruby_setenv");
     }
     if (value) {
+	if (strlen(value) > 5120) goto fail;
 	buf = rb_sprintf("%s=%s", name, value);
     }
     else {

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