Invalid offset-does-not-exist-on-array error #1062
Description
function foo(string $s) : void {
$a = [
'b' => ['c' => false],
'c' => ['c' => true],
'd' => ['e' => true]
];
if (isset($a[$s]['c'])) {} // this should definitely be fine
}Expected: no issue
Actual: Offset 'c' does not exist on array('c' => bool)|array('e' => true).