"internal error" in ReflectionParameter::getDefaultValue on Variable-length argument list
Open
Bug
Extension: reflection
Status: Verified
- Dominant language
- C
- Stars
- 40.4k
- Forks
- 8.1k
- Avg merge
- 2d 13h
- Merged PRs (30d)
- 96
Description
Description
The following code:
<?php
declare(strict_types=1);
function f(...$args){
echo "see? arguments are optional.\n";
}
f();
$ref = new ReflectionFunction('f');
var_dump($ref->getParameters()[0]->getDefaultValue());
Resulted in this output:
see? arguments are optional.
Fatal error: Uncaught ReflectionException: Internal error: Failed to retrieve the default value in /in/gHhJ2:8
Stack trace:
#0 /in/gHhJ2(8): ReflectionParameter->getDefaultValue()
#1 {main}
thrown in /in/gHhJ2 on line 8
But I expected this output instead:
see? arguments are optional.
array(0) {
}
3v4l: https://3v4l.org/gHhJ2
PHP Version
8.2.11
Operating System
windows 10
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the supplied PHP 8.2.11 snippet and trace the ReflectionParameter::getDefaultValue() entry point for a variadic parameter. The change is complete when the call no longer throws an internal error and produces the expected empty array; an open linked pull request shows that work is already underway.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c, php
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Clearly specified
- Newbie friendliness
- 25/100