SC2154 false positive

[benoit-pierre]

For bugs with existing features

• Rule Id: SC2154
• My shellcheck version: 0.11.0
• [x] The rule's wiki page does not already cover this
• [x] I tried on https://www.shellcheck.net/ and verified that this is still a problem on the latest commit

Here's a snippet or screenshot that shows the problem:

#!/bin/bash
declare -a "a=($2)"
options+=("${a[@]}")

Here's what shellcheck currently says:

Line 3:
options+=("${a[@]}")
           ^-- SC2154 (warning): a is referenced but not assigned.

Here's what I wanted or expected to see:

This worked fine with 0.10.0. The warning is gone if the second line is changed to declare -a a="($2)".