[packages] bash: import upstream 4.2 patch series

git-svn-id: svn://svn.openwrt.org/openwrt/packages@31746 3c298f89-4303-0410-b956-a3cf2f4a3e73

utils/bash/patches/121-upstream-bash42-021.patch

@@ -0,0 +1,48 @@
+			     BASH PATCH REPORT
+			     =================
+
+Bash-Release:	4.2
+Patch-ID:	bash42-021
+
+Bug-Reported-by:	Dan Douglas <ormaaj@gmail.com>
+Bug-Reference-ID:	<4585554.nZWb4q7YoZ@smorgbox>
+Bug-Reference-URL:	http://lists.gnu.org/archive/html/bug-bash/2011-12/msg00084.html
+
+Bug-Description:
+
+Using `read -N' to assign values to an array can result in NUL values being
+assigned to some array elements.  These values cause seg faults when referenced
+later.
+
+Patch (apply with `patch -p0'):
+
+--- a/builtins/read.def
++++ b/builtins/read.def
+@@ -737,7 +737,7 @@ assign_vars:
+ 	      xfree (t1);
+ 	    }
+ 	  else
+-	    var = bind_read_variable (varname, t);
++	    var = bind_read_variable (varname, t ? t : "");
+ 	}
+       else
+ 	{
+@@ -798,7 +798,7 @@ assign_vars:
+       xfree (t);
+     }
+   else
+-    var = bind_read_variable (list->word->word, input_string);
++    var = bind_read_variable (list->word->word, input_string ? input_string : "");
+ 
+   if (var)
+     {
+--- a/patchlevel.h
++++ b/patchlevel.h
+@@ -25,6 +25,6 @@
+    regexp `^#define[ 	]*PATCHLEVEL', since that's what support/mkversion.sh
+    looks for to find the patch level (for the sccs version string). */
+ 
+-#define PATCHLEVEL 20
++#define PATCHLEVEL 21
+ 
+ #endif /* _PATCHLEVEL_H_ */