Fix buffer overrun in pseudoterminal test#119
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vsnprintf returns the number of bytes needed, *excluding* the terminating NUL byte. This therefore always wrote the terminating NUL byte to one address past the end of buf. Identified with fortify-headers.
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vsnprintf returns the number of bytes needed, excluding the terminating NUL byte. This therefore always wrote the terminating NUL byte to one address past the end of buf.
Identified with fortify-headers.