Description

According to perldoc -f chdir:

It returns true on success, false otherwise.

However, chdir actually returns (integer) 1 and 0. This is mostly observable in the failure case, which (according to the documentation) should return a value that is eq "", but isn't.

Steps to Reproduce

$ perl -wE 'say chdir "/invalid*"'
0
$ perl -Mexperimental=builtin -wE 'say builtin::is_bool chdir "/invalid*"'
$

Expected behavior

$ perl -wE 'say chdir "/invalid*"'
$ perl -Mexperimental=builtin -wE 'say builtin::is_bool chdir "/invalid*"'
1
$

I.e. a false value should stringify to the empty string and be is_bool.

Alternatively, the documentation should be changed to match the existing behavior.

(This is with v5.40.0.)