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streams/memory: Ensure internal string is NUL terminated (#20812)

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zend_string_truncate() doesn't put a NUL byte.
This commit is contained in:
Niels Dossche
2026-01-02 09:03:17 -08:00
committed by GitHub
parent 30ed81314b
commit 5484ebcc49
1 changed files with 1 additions and 1 deletions
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main/streams/memory.c
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@@ -247,8 +247,8 @@ static int php_stream_memory_set_option(php_stream *stream, int option, int valu
size_t old_size = ZSTR_LEN(ms->data);
ms->data = zend_string_realloc(ms->data, newsize, 0);
memset(ZSTR_VAL(ms->data) + old_size, 0, newsize - old_size);
ZSTR_VAL(ms->data)[ZSTR_LEN(ms->data)] = '\0';
}
ZSTR_VAL(ms->data)[ZSTR_LEN(ms->data)] = '\0';
return PHP_STREAM_OPTION_RETURN_OK;
}
}