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Fix #79934: CRLF-only line in heredoc causes parsing error #5944

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Fix #79934: CRLF-only line in heredoc causes parsing error #5944

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29 changes: 29 additions & 0 deletions Zend/tests/bug79934.phpt
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--TEST--
Bug #79934: CRLF-only line in heredoc causes parsing error
--DESCRIPTION--
This test covers different variations of whitespace-only lines in heredoc strings.
These whitespace-only lines should be ignored when stripping indentation.
--FILE--
<?php
// lines with only CRLF should not cause a parse error
eval("\$s1 = <<<HEREDOC\r\n a\r\n\r\n b\r\n HEREDOC;");
var_dump(addcslashes($s1, "\r\n"));

// lines with only a LF should not cause a parse error
eval("\$s2 = <<<HEREDOC\n a\n\n b\n HEREDOC;");
var_dump(addcslashes($s2, "\n"));

// lines with only a CR should not cause a parse error
eval("\$s3 = <<<HEREDOC\r a\r\r b\r HEREDOC;");
var_dump(addcslashes($s3, "\r"));

// lines with only whitespace should not cause a parse error
eval("\$s4 = <<<HEREDOC\r a\r\n \r\n b\r HEREDOC;");
var_dump(addcslashes($s4, "\n\r"));

?>
--EXPECT--
string(10) "a\r\n\r\nb"
string(6) "a\n\nb"
string(6) "a\r\rb"
string(10) "a\r\n\r\nb"
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