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Annotation of embedaddon/ntp/html/hints/aix, revision 1.1

1.1     ! misho       1: Problem with recent ANSI compilers
        !             2: 
        !             3: On some systems, including AIX, the compiler quits on the ntp_refclock.c
        !             4: file when processing the refclock_report() routine. The problem, which
        !             5: is eithre a feature or a bug, has to do with an unwanted promotion of
        !             6: the u_char argument to an int and a failure of the compiler to recognize
        !             7: the preceding prototype. A workaround is to use ANSI syntax to delare
        !             8: the arguments. Since ANSI compilers are not universally available, this
        !             9: syntax can't be used in the stock distribution.
        !            10: 
        !            11: (Message # 60: 2884 bytes, New)
        !            12: Date: Sat, 19 Aug 1995 13:20:50 -0400
        !            13: From: "R. Bernstein" <rocky@panix.com>
        !            14: Newsgroups: comp.protocols.time.ntp
        !            15: to: mills@udel.edu
        !            16: return-receipt-to: rocky@panix.com
        !            17: Subject: time and AIX 3.2.5 raw tty bug
        !            18:  
        !            19: This posting isn't strictly about NTP, any program that may stop the
        !            20: clock or set the clock backwards is subject to the AIX 3.2.5 bug.
        !            21:  
        !            22: On AIX 3.2.5, there is a bug in the tty driver for a raw device which
        !            23: may crash the box under certain conditions: basically a read() on a
        !            24: raw tty in effect, a character was read but not as many as specified
        !            25: by VMIN when a read timeout occurred. VTIME specifies the timeout. See
        !            26: the AIX manual page on termios.h or that include file. for Information
        !            27: on VMIN (or MIN) VTIME (or TIME).
        !            28:  
        !            29: A remedy other than to not use raw tty's is to apply patch U435110.
        !            30:  
        !            31: Details of the problem report follow.
        !            32:  
        !            33: > ABSTRACT:
        !            34: > IX43779: TRAP IN PSX_TIMEO
        !            35: >
        !            36: > ORIGINATING DETAILS:
        !            37: > Stacktrace shows:
        !            38: > IAR:      01460214   posixdd:psx_timeo  + 8bf4: ti 4,r12,0x0
        !            39: > *LR:      014601a0   posixdd:psx_timeo  + 8b80
        !            40: > 00212c60: 014604f4   posixdd:psx_timer  + 8ed4
        !            41: > 00212cc0: 0144b74c   ttydd:tty_do_offlevel  + 4284
        !            42: > 00212d20: 000216fc  .i_offlevel + 8c
        !            43: > 00212d70: 00021d78  .i_softint + c8
        !            44: > 00001004: 00008714  .finish_interrupt + 80
        !            45: >
        !            46: > RESPONDER SUMMARY:
        !            47: > AIX asserted in psx_timeo(). Reason for the assert was that
        !            48: > the current time was behind psx_ctime. Since this state
        !            49: > can occur when the current time is changed after a character
        !            50: > is received but before the VTIME interbyte timer pops, we
        !            51: > should not assert on this.
        !            52: >
        !            53: > RESPONDER CONCLUSION:
        !            54: > Removed the requirement that current time > psx_ctime by
        !            55: > adding a new L_ntimersub macro that is used instead of the
        !            56: > ntimersub macro in time.h. Also added a test for (current
        !            57: > time - psx_ctime) being negative, in that case we do not
        !            58: > adjust the new timeout.
        !            59: >
        !            60: > Reported to Correct a PTF in Error:     NO
        !            61: > Reported as a Highly pervasive problem: NO
        !            62: >
        !            63: > PE Apar?:       NoPE
        !            64: > Hiper Apar?:    NoHiper
        !            65: > Status:         CLOSED  PER
        !            66: > Component Name: AIX V3 FOR RS/6
        !            67: > Version:        320
        !            68: > Component ID:   575603001
        !            69: > Submitted:      94/05/03
        !            70: > Closed:         94/05/05
        !            71: > ChangeTeam:     TX2527
        !            72: >
        !            73: > APAR FIXED BY:  U431696  U432151  U432844  U432870  U432979
        !            74: > U433049  U433081  U433459  U433876  U433906  U434598  U434453
        !            75: > U434672  U434737  U435110
        !            76: