linux: Improve panic message for out-of-range fds in FD_* functions - #5528
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danielcanencia wants to merge 1 commit into
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linux: Improve panic message for out-of-range fds in FD_* functions#5528danielcanencia wants to merge 1 commit into
danielcanencia wants to merge 1 commit into
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Passing a file descriptor that is negative or >= FD_SETSIZE to FD_SET, FD_CLR or FD_ISSET is undefined behavior per POSIX, and the previous "index out of bounds" panic gave no hint of the required range. Panic with a message that states the valid 0..FD_SETSIZE range instead. Source: https://github.com/bminor/glibc/blob/d2097651cc57834dbfcaa102ddfacae0d86cfb66/misc/sys/select.h Part of rust-lang#1401 Signed-off-by: Daniel Canencia Garcia <danielcanenciagarcia@gmail.com>
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Part of #1401
Fixes the out-of-bounds FD_SET/FD_CLR/FD_ISSET panic for Linux
(linux_like). The issue also calls for the same clear panic message in
other platforms; those remain a follow-up (cygwin, haiku, solaris, etc).
Note:
is nothing to range-check.