Problem with recent ANSI compilersOn some systems, including AIX, the compiler quits on the ntp_refclock.cfile when processing the refclock_report() routine. The problem, whichis eithre a feature or a bug, has to do with an unwanted promotion ofthe u_char argument to an int and a failure of the compiler to recognizethe preceding prototype. A workaround is to use ANSI syntax to delarethe arguments. Since ANSI compilers are not universally available, thissyntax can't be used in the stock distribution.(Message # 60: 2884 bytes, New)Date: Sat, 19 Aug 1995 13:20:50 -0400From: "R. Bernstein" <rocky@panix.com>Newsgroups: comp.protocols.time.ntpto: mills@udel.edureturn-receipt-to: rocky@panix.comSubject: time and AIX 3.2.5 raw tty bug This posting isn't strictly about NTP, any program that may stop theclock or set the clock backwards is subject to the AIX 3.2.5 bug. On AIX 3.2.5, there is a bug in the tty driver for a raw device whichmay crash the box under certain conditions: basically a read() on araw tty in effect, a character was read but not as many as specifiedby VMIN when a read timeout occurred. VTIME specifies the timeout. Seethe AIX manual page on termios.h or that include file. for Informationon VMIN (or MIN) VTIME (or TIME). A remedy other than to not use raw tty's is to apply patch U435110. Details of the problem report follow. > ABSTRACT:> IX43779: TRAP IN PSX_TIMEO>> ORIGINATING DETAILS:> Stacktrace shows:> IAR:      01460214   posixdd:psx_timeo  + 8bf4: ti 4,r12,0x0> *LR:      014601a0   posixdd:psx_timeo  + 8b80> 00212c60: 014604f4   posixdd:psx_timer  + 8ed4> 00212cc0: 0144b74c   ttydd:tty_do_offlevel  + 4284> 00212d20: 000216fc  .i_offlevel + 8c> 00212d70: 00021d78  .i_softint + c8> 00001004: 00008714  .finish_interrupt + 80>> RESPONDER SUMMARY:> AIX asserted in psx_timeo(). Reason for the assert was that> the current time was behind psx_ctime. Since this state> can occur when the current time is changed after a character> is received but before the VTIME interbyte timer pops, we> should not assert on this.>> RESPONDER CONCLUSION:> Removed the requirement that current time > psx_ctime by> adding a new L_ntimersub macro that is used instead of the> ntimersub macro in time.h. Also added a test for (current> time - psx_ctime) being negative, in that case we do not> adjust the new timeout.>> Reported to Correct a PTF in Error:     NO> Reported as a Highly pervasive problem: NO>> PE Apar?:       NoPE> Hiper Apar?:    NoHiper> Status:         CLOSED  PER> Component Name: AIX V3 FOR RS/6> Version:        320> Component ID:   575603001> Submitted:      94/05/03> Closed:         94/05/05> ChangeTeam:     TX2527>> APAR FIXED BY:  U431696  U432151  U432844  U432870  U432979> U433049  U433081  U433459  U433876  U433906  U434598  U434453> U434672  U434737  U435110