nobu	2015-09-25 16:08:45 +0900 (Fri, 25 Sep 2015)

  New Revision: 51935

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=51935

  Log:
    hash.c: GC guards
    
    * hash.c (env_delete, env_aset): prevent environment variable
      names from GC while ruby_setenv.

  Modified files:
    trunk/hash.c
Index: hash.c
===================================================================
--- hash.c	(revision 51934)
+++ hash.c	(revision 51935)
@@ -2816,6 +2816,7 @@ env_delete(VALUE obj, VALUE name) https://github.com/ruby/ruby/blob/trunk/hash.c#L2816
 
 	ruby_setenv(nam, 0);
 	if (ENVMATCH(nam, PATH_ENV)) {
+	    RB_GC_GUARD(name);
 	    path_tainted = 0;
 	}
 	return value;
@@ -3151,6 +3152,7 @@ env_aset(VALUE obj, VALUE nm, VALUE val) https://github.com/ruby/ruby/blob/trunk/hash.c#L3152
 
     ruby_setenv(name, value);
     if (ENVMATCH(name, PATH_ENV)) {
+	RB_GC_GUARD(nm);
 	if (OBJ_TAINTED(val)) {
 	    /* already tainted, no check */
 	    path_tainted = 1;

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