printf -v 'array[0]' does not count as array assignment

[koalaman]

For bugs

• Rule Id (if any, e.g. SC1000): SC2154
• My shellcheck version (shellcheck --version or "online"): online
• I tried on shellcheck.net and verified that this is still a problem on the latest commit
• It's not reproducible on shellcheck.net, but I think that's because it's an OS, configuration or encoding issue

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

#!/bin/bash
var=howdy;
printf -v 'array[0]' %s "$var";
printf %s\\n "${array[@]}";

Here's what shellcheck currently says:

Line 4:
printf %s\\n "${array[@]}";
              ^-- SC2154: array is referenced but not assigned.

Here's what I wanted or expected to see:

Nothing