SC2030/SC2031 and `declare -p'

[admirabilis]

While SC2030 and SC2031 warn against modified variables inside a subshell, the option -p for declare is used only to print the attributes of a variable, not to modify it:

$ help declare | grep -- -p
declare: declare [-aAfFgilrtux] [-p] [name[=value] ...]
      -p    display the attributes and value of each NAME

For this script

#!/bin/bash

list=(*)
: "$(declare -p list)"
: "$list"

shellcheck returns

In /tmp/1 line 4:
: "$(declare -p list)"
                ^-- SC2030: Modification of list is local (to subshell caused by $(..) expansion).

In /tmp/1 line 5:
: "$list"
   ^-- SC2031: list was modified in a subshell. That change might be lost.