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Conference turris::decc

Title:	DECC
Notice:	General DEC C discussions
Moderator:	TLE::D_SMITHNTE

Created:	Fri Nov 13 1992
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	2212
Total number of notes:	11045

2165.0. "lib$do_command routine" by DPPSYS::BOLLAND () Mon Apr 28 1997 10:41

    
    	I'm having a problem with the lib$do_command routine.
    
    	I have a program which has a call to lib$do_command which runs a
    	command file which sends me a mail message.
    
    	When I compile and run my program on a VAX everything works OK, the
    	mail is sent, the program terminates, and I'm left at the $ prompt.
    
    	When I compile (/standard=vaxc) and run my program on an ALPHA the
    	mail is sent but the program does not terminate it just hangs.
    
    	I've tried LIB$SPAWN and the same thing happens.
    
    	Anyone idea ideas ?
    
    
    		thanks,
    			stephen

T.R	Title	User	Personal Name	Date	Lines
2165.1	where else to ask	CAIRN::HARRIS	Kevin Harris, dtn 381-2039	`Mon Apr 28 1997 12:14`	2
	Offhand, this sounds like a case for the VMSNOTES conference. -Kevin
2165.2		SPECXN::DERAMO	Dan D'Eramo	`Mon Apr 28 1997 12:41`	11
	There is a possibility that it is related to the "double ctrl-Y" problem on later versions of OpenVMS Alpha (run the program, type ctrl-y, type the exit command and the program gets hung up in its exit handling. You need to type ctrl-y and exit again.) If earlier versions of OpenVMS Alpha don't have the problem and later ones do, then maybe lib$do_command is getting hung up in the rtl exit handling. Dan
2165.3	lib$do_command...	XDELTA::HOFFMAN	Steve, OpenVMS Engineering	`Mon Apr 28 1997 14:32`	16
	lib$do_command is a "chaining" function, it stuffs the command into the command buffer for execution, and causes the current image to exit. If the mail is sent, I'd look in the DCL procedure with a SET VERIFY (or f$verify lexical) to see where the hang occurs -- the image that called lib$do_command has already exited by the time the mail is sent... I can send you some C code which sends e-mail via the callable mail interface -- the C code will resolve this particular problem. This C code will not address your immediate question -- this question is better suited to VMSNOTES. if you cross-post, we will need the C and the DCL code needed to duplicate this problem. We will also need to know the OpenVMS version.