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9287f5433e
`gomp_get_uid_for_device` allows ten digits for the `%d`, but `device_num`
is a plain `int`, whose widest rendering is `-2147483648` -- eleven. With
the eight-character `OMP_DEV_` prefix that is twenty bytes plus the NUL into
a nineteen-byte buffer. GCC 16 started noticing, and `libgomp` builds with
`-Werror`:
target.c:5956:31: error: 'snprintf' output may be truncated before the
last format character [-Werror=format-truncation=]
A real off-by-one rather than a false positive, so fix the size instead of
silencing the warning. My first guess was that fortify was to blame, since
the diagnostic named `__builtin___snprintf_chk`; it is not -- turning
hardening off only changes the name in the message.
Co-authored-by: Ben Siraphob <bensiraphob@gmail.com>
Assisted-by: Claude Code (Claude Opus 5)