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Fix GH-17463: SplTempFileObject::ftruncate() segfault on negative len… #17465

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Fix GH-17463: SplTempFileObject::ftruncate() segfault on negative len… #17465

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6 changes: 6 additions & 0 deletions ext/spl/spl_directory.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2708,6 +2708,12 @@ PHP_METHOD(SplFileObject, ftruncate)

CHECK_SPL_FILE_OBJECT_IS_INITIALIZED(intern);

if (size < 0) {
zend_argument_value_error(1, "must be greater than or equal to 0");
RETURN_THROWS();
}


if (!php_stream_truncate_supported(intern->u.file.stream)) {
zend_throw_exception_ex(spl_ce_LogicException, 0, "Can't truncate file %s", ZSTR_VAL(intern->file_name));
RETURN_THROWS();
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16 changes: 16 additions & 0 deletions ext/spl/tests/gh17463.phpt
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Original file line number Diff line number Diff line change
@@ -0,0 +1,16 @@
--TEST--
GH-17463 segfault on SplFileObject::ftruncate() with negative value.
--CREDITS--
YuanchengJiang
--FILE--
<?php
$cls = new SplTempFileObject();

try {
$cls->ftruncate(-1);
} catch (\ValueError $e) {
echo $e->getMessage();
}
?>
--EXPECT--
SplFileObject::ftruncate(): Argument #1 ($size) must be greater than or equal to 0
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