It seems that in general the array type is inherited just fine, there is an
issue only in the case that:
* the `A' attribute is inherited but not explicitly supplied
* we are creating the local variable with the `declare' command
(i.e. it is not already an existing local variable)
* we are performing a compound assignment/append operation in the
same declare command
For example, given:
shopt -s localvar_inherit
declare -A var=([X]=X)
These all work smoothly:
## no explicit `-A', no assignment in `declare':
f() { declare var; declare -p var; }; f
# declare -A var=([X]="X" )
f() { declare var; var=([Y]=Y); declare -p var; }; f
# declare -A var=([Y]="Y" )
f() { declare var; var+=([Y]=Y); declare -p var; }; f
# declare -A var=([X]="X" [Y]="Y" )
## explicit `-A', assignment in `declare':
f() { declare -A var=([Y]=Y); declare -p var; }; f
# declare -A var=([Y]="Y" )
f() { declare -A var+=([Y]=Y); declare -p var; }; f
# declare -A var=([X]="X" [Y]="Y" )
## non-compound assignment:
f() { declare var[Y]=Y; declare -p var; }; f
declare -A var=([X]="X" [Y]="Y" )
But here we have some issues:
## no explicit `-A', assignment in `declare':
f() { declare var=([Y]=Y); declare -p var; }; f
# Segmentation fault: 11
f() { declare var+=([Y]=Y); declare -p var; }; f
# Segmentation fault: 11
f() { declare var+=(); declare -p var; }; f
# declare -aA var=()
f() { declare var=(); declare -p var; }; f
declare -aA var=()
