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diff --git a/patches/source/bash/bash-4.2-patches/bash42-039 b/patches/source/bash/bash-4.2-patches/bash42-039
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+++ b/patches/source/bash/bash-4.2-patches/bash42-039
@@ -0,0 +1,58 @@
+ BASH PATCH REPORT
+ =================
+
+Bash-Release: 4.2
+Patch-ID: bash42-039
+
+Bug-Reported-by: Dan Douglas <ormaaj@gmail.com>
+Bug-Reference-ID: <1498458.MpVlmOXDB7@smorgbox>
+Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2012-09/msg00008.html
+
+Bug-Description:
+
+Under certain circumstances, bash attempts to expand variables in arithmetic
+expressions even when evaluation is being suppressed.
+
+Patch (apply with `patch -p0'):
+
+*** ../bash-4.2-patched/expr.c 2011-11-21 18:03:35.000000000 -0500
+--- expr.c 2012-09-09 16:31:18.000000000 -0400
+***************
+*** 1010,1013 ****
+--- 1073,1082 ----
+ #endif
+
++ /*itrace("expr_streval: %s: noeval = %d", tok, noeval);*/
++ /* If we are suppressing evaluation, just short-circuit here instead of
++ going through the rest of the evaluator. */
++ if (noeval)
++ return (0);
++
+ /* [[[[[ */
+ #if defined (ARRAY_VARS)
+***************
+*** 1183,1186 ****
+--- 1256,1263 ----
+
+ *cp = '\0';
++ /* XXX - watch out for pointer aliasing issues here */
++ if (curlval.tokstr && curlval.tokstr == tokstr)
++ init_lvalue (&curlval);
++
+ FREE (tokstr);
+ tokstr = savestring (tp);
+*** ../bash-4.2-patched/patchlevel.h Sat Jun 12 20:14:48 2010
+--- patchlevel.h Thu Feb 24 21:41:34 2011
+***************
+*** 26,30 ****
+ looks for to find the patch level (for the sccs version string). */
+
+! #define PATCHLEVEL 38
+
+ #endif /* _PATCHLEVEL_H_ */
+--- 26,30 ----
+ looks for to find the patch level (for the sccs version string). */
+
+! #define PATCHLEVEL 39
+
+ #endif /* _PATCHLEVEL_H_ */