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/ext/standard: Check for empty string in linkinfo() #21793

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/ext/standard: Check for empty string in linkinfo() #21793

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baccc0e
Update link.c
LamentXU123 Apr 18, 2026
ee2a1a6
switch to ValueError
LamentXU123 Apr 19, 2026
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6 changes: 5 additions & 1 deletion ext/standard/link.c
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Original file line number Diff line number Diff line change
Expand Up @@ -84,7 +84,11 @@ PHP_FUNCTION(linkinfo)
Z_PARAM_PATH(link, link_len)
ZEND_PARSE_PARAMETERS_END();

// TODO Check for empty string
if (UNEXPECTED(link_len == 0)) {
php_error_docref(NULL, E_WARNING, "%s", strerror(ENOENT));
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RETURN_LONG(Z_L(-1));
}

dirname = estrndup(link, link_len);
zend_dirname(dirname, link_len);

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