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Fix creation of extra associative array element '0' (#101)

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Multidimensional associative arrays are created with an extra array
member named '0', which is set to no value. Reproducer:

$ typeset -A foo
$ typeset -A foo[bar]
$ typeset -p foo
typeset -A foo=([bar]=([0]='') )

The bugfix prevents nv_setarray from creating the extra '[0]' member
when an associative array is empty. This bug was discussed on the old
mailing list:
https://www.mail-archive.com/ast-developers@lists.research.att.com/msg01574.html

src/cmd/ksh93/sh/array.c:
- Do not allow the creation of an extra array member when an array
  is empty.

src/cmd/ksh93/tests/arrays.sh:
- Add a regression test for creating multidimensional associative
  arrays, but use the output from 'typeset -p' instead of fgrep.
This commit is contained in:
Johnothan King 2020-07-31 09:32:09 -07:00 • committed by GitHub
parent 70f6d758c0
commit 02a14ff9b7
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4 changed files with 17 additions and 2 deletions
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2
src/cmd/ksh93/include/version.h
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@ -17,4 +17,4 @@
* David Korn <dgk@research.att.com> *
* *
***********************************************************************/
#define SH_RELEASE "93u+m 2020-07-29"
#define SH_RELEASE "93u+m 2020-07-31"