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BASH PATCH REPORT
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=================
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Bash-Release: 4.2
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Patch-ID: bash42-046
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Bug-Reported-by: "Theodoros V. Kalamatianos" <thkala@gmail.com>
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Bug-Reference-ID: <20140112011131.GE17667@infinity.metashade.com>
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Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2014-01/msg00044.html
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Bug-Description:
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Bash-4.2 patch 32 introduced a problem with "$@" and arrays expanding empty
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positional parameters or array elements when using substring expansion,
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pattern substitution, or case modfication. The empty parameters or array
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elements are removed instead of expanding to empty strings ("").
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Patch (apply with `patch -p0'):
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*** ../bash-4.2-patched/subst.c 2012-12-31 11:52:56.000000000 -0500
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--- subst.c 2014-03-31 14:19:56.000000000 -0400
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***************
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*** 7243,7247 ****
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ret = alloc_word_desc ();
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ret->word = temp1;
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! if (temp1 && QUOTED_NULL (temp1) && (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)))
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ret->flags |= W_QUOTED|W_HASQUOTEDNULL;
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return ret;
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--- 7243,7253 ----
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ret = alloc_word_desc ();
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ret->word = temp1;
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! /* We test quoted_dollar_atp because we want variants with double-quoted
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! "$@" to take a different code path. In fact, we make sure at the end
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! of expand_word_internal that we're only looking at these flags if
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! quoted_dollar_at == 0. */
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! if (temp1 &&
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! (quoted_dollar_atp == 0 || *quoted_dollar_atp == 0) &&
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! QUOTED_NULL (temp1) && (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)))
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ret->flags |= W_QUOTED|W_HASQUOTEDNULL;
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return ret;
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*** ../bash-4.2-patched/patchlevel.h Sat Jun 12 20:14:48 2010
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--- patchlevel.h Thu Feb 24 21:41:34 2011
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***************
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*** 26,30 ****
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looks for to find the patch level (for the sccs version string). */
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! #define PATCHLEVEL 45
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#endif /* _PATCHLEVEL_H_ */
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--- 26,30 ----
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looks for to find the patch level (for the sccs version string). */
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! #define PATCHLEVEL 46
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#endif /* _PATCHLEVEL_H_ */
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