zephir

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How to reproduce:

Variant with a->join(” “)

namespace Foo;

class Bar
{
    public function test(string! a, var b = null) ->string
    {
        if b === null || b === false {
            return a->trimleft();
        }

        if typeof b == "array" {
            let b = b->join("");
        }

        let b = preg_replace("#[-\[\]:\\\\^/]#", "\\\\$0", b);

        return preg_replace("/^[" . b . "]+/u", "", a);
    }
}

Test 1:

php -r '$myobject = new Foo\Bar; echo $myobject->test("FOO", "F") . PHP_EOL;'

Result 1:

OO

Test 2:

 php -r '$myobject = new Foo\Bar; echo $myobject->test("FOO") . PHP_EOL;'

Result 2:

FOO

Test 3:

php -r '$myobject = new Foo\Bar; echo $myobject->test("ålcó", array("å", "l")) . PHP_EOL;'

Result 3:

Segmentation fault (core dumped)

Variant with join(” “, a)

namespace Foo;

class Bar
{
    public function test(string! a, var b = null) ->string
    {
        if b === null || b === false {
            return a->trimleft();
        }

        if typeof b == "array" {
            let b = join("", b);
        }

        let b = preg_replace("#[-\[\]:\\\\^/]#", "\\\\$0", b);

        return preg_replace("/^[" . b . "]+/u", "", a);
    }
}

Test 1:

php -r '$myobject = new Foo\Bar; echo $myobject->test("FOO", "F") . PHP_EOL;'

Result 1:

OO

Test 2:

 php -r '$myobject = new Foo\Bar; echo $myobject->test("FOO") . PHP_EOL;'

Result 2:

FOO

Test 3:

php -r '$myobject = new Foo\Bar; echo $myobject->test("ålcó", array("å", "l")) . PHP_EOL;'

Result 3:

có

Resume

• With a->join("") — Segmentation fault (core dumped)
• With join("", a) — OK

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refs https://github.com/phalcon/zephir/pull/719