ext/posix: posix_isatty() fix use-of-uninitialized-value #11676
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When the value passed is not representable as an int then it is not a TTY and thus should return false immediately. Moreover, we need to actually retrieve the zend_long from the zval. This was reported by MSAN.
iluuu1994
reviewed
Jul 11, 2023
ext/posix/posix.c
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| } | ||
| fd = zval_get_long(z_fd); |
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Actually, this part looks redundant, no? fd is written to by zend_parse_arg_long, but only if successful.
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When the value passed is not representable as an int then it is not a TTY and thus should return false immediately. Moreover, we need to actually retrieve the zend_long from the zval.
This was reported by MSAN.