[TUHS] MacOS X is Unix (tm)

Derek Fawcus dfawcus+lists-tuhs at employees.org
Wed Jan 4 02:09:26 AEST 2017


On Tue, Jan 03, 2017 at 04:08:56pm +0100, Joerg Schilling wrote:
> 
> I should write a test program that retrieved the waitid() results from the the 
> SIGCHLD handler and see whether that is OK as well.
> 
> Here is the new code:

FWIW, on 10.10.5 [1] this gives essentially the same result as the prior program,
the signal handler seeing the same sign extended 24 bit value:

$ ./posix2
received SIGCHLD (20), si_pid: 2281 si_status: -6946094 si_code: 1
SIGCHLD: si_status in struct siginfo should be 1234567890 (0x499602d2) but is -6946094 (0xff9602d2)
ret: 0 si_pid: 2281 si_status: -6946094 si_code: 1
si_status in struct siginfo should be 1234567890 (0x499602d2) but is -6946094 (0xff9602d2)

Mind,  one should probably assign the handler to sa.sa_sigaction, as someone
could implement the struct w/o both fields in a union.

As I recall,  there are also other bugs in OSX to do with poll() handling,
so that would be another area where the conformance tests fall short.

DF

[1] Darwin Old-MBA.local 14.5.0 Darwin Kernel Version 14.5.0: Sun Sep 25 22:07:15 PDT 2016; root:xnu-2782.50.9~1/RELEASE_X86_64 x86_64


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