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Add range check

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This commit is contained in:
Matt Brown 2020-10-15 13:04:24 -04:00 committed by Daniil Gentili
parent 5b140bf522
commit 1025b29e06
Signed by: danog
GPG Key ID: 8C1BE3B34B230CA7
1 changed files with 5 additions and 2 deletions
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7
src/Psalm/FileManipulation.php
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@ -23,7 +23,7 @@ class FileManipulation
/** @var bool */
public $remove_trailing_newline;
public function __construct(
int $start,
int $end,
@ -59,7 +59,10 @@ class FileManipulation
}
}
if ($this->remove_trailing_newline && $existing_contents[$this->end] === "\n") {
if ($this->remove_trailing_newline
&& strlen($existing_contents) > $this->end
&& $existing_contents[$this->end] === "\n"
) {
$newline_pos = strrpos($existing_contents, "\n", $this->start - strlen($existing_contents));
$newline_pos = $newline_pos !== false ? $newline_pos + 1 : 0;