BASH PATCH REPORT
=================
Bash-Release: 5.3
Patch-ID: bash53-003
Bug-Reported-by: Isabella Bosia <izaber...@gmail.com>
Bug-Reference-ID:
<CAAZkfoJhQ1BJ7BGk3-ObctvCJJrW3rp_tWQXT=9ry7kgdvz...@mail.gmail.com>
Bug-Reference-URL:
https://lists.gnu.org/archive/html/bug-bash/2025-06/msg00173.html
Bug-Description:
Bash leaves internal quoting in place when expanding array subscripts
that appear inside array subscripts in an arithmetic context, causing
expansion failures.
Patch (apply with `patch -p0'):
*** ../bash-5.3-patched/subst.c Sun May 18 15:00:13 2025
--- subst.c Fri Jul 11 09:48:44 2025
***************
*** 3796,3802 ****
#endif
! /* We don't perform process substitution in arithmetic expressions, so don't
! bother checking for it. */
! #define ARITH_EXP_CHAR(s) (s == '$' || s == '`' || s == CTLESC || s == '~')
/* If there are any characters in STRING that require full expansion,
--- 3796,3802 ----
#endif
! /* We don't perform process substitution or tilde expansion in arithmetic
! expressions, so don't bother checking for them. */
! #define ARITH_EXP_CHAR(s) (s == '$' || s == '`' || s == CTLESC)
/* If there are any characters in STRING that require full expansion,
***************
*** 12216,12219 ****
--- 12216,12227 ----
break;
}
+ #if defined (ARRAY_VARS)
+ /* The only special characters that matter here are []~, since those
+ are backslash-quoted in expand_array_subscript but not dequoted
+ by the statement following this one. */
+ if ((quoted & Q_ARITH) && (c == LBRACK || c == RBRACK || c == '~'))
+ ; /* placeholder here */
+ else
+ #endif
if (((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) || dquote) &&
(sh_syntaxtab[c] & CBSDQUOTE) == 0)
*r++ = '\\';
*** ../bash-5.3/tests/quotearray.right Thu Nov 10 10:39:56 2022
--- tests/quotearray.right Thu Jul 10 15:40:27 2025
***************
*** 45,49 ****
0
0
! ./quotearray1.sub: line 68: 0\],b\[1: arithmetic syntax error: invalid
arithmetic operator (error token is "\],b\[1")
declare -a array
0
--- 45,49 ----
0
0
! ./quotearray1.sub: line 68: 0],b[1: arithmetic syntax error: invalid
arithmetic operator (error token is "],b[1")
declare -a array
0
*** ../bash-5.3/patchlevel.h 2020-06-22 14:51:03.000000000 -0400
--- patchlevel.h 2020-10-01 11:01:28.000000000 -0400
***************
*** 26,30 ****
looks for to find the patch level (for the sccs version string). */
! #define PATCHLEVEL 2
#endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
looks for to find the patch level (for the sccs version string). */
! #define PATCHLEVEL 3
#endif /* _PATCHLEVEL_H_ */
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU c...@case.edu http://tiswww.cwru.edu/~chet/
