--TEST--
Skipping over default parameters
--FILE--
<?php

function test1($a = 'a', $b = 'b') {
    echo "a: $a, b: $b\n";
}

function test2($a = SOME_CONST, $b = 'b') {
    echo "a: $a, b: $b\n";
}

function test3($a = SOME_OTHER_CONST, $b = 'b') {
    echo "a: $a, b: $b\n";
}

test1(b: 'B');

define('SOME_CONST', 'X');
test2(b: 'B');

// NB: We also want to test the stack trace.
test3(b: 'B');

?>
--EXPECTF--
a: a, b: B
a: X, b: B

Fatal error: Uncaught Error: Undefined constant "SOME_OTHER_CONST" in %s:%d
Stack trace:
#0 %s(%d): test3(NULL, 'B')
#1 {main}
  thrown in %s on line %d