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From: SYSDEV@dlvc.daresbury.ac.UK
Newsgroups: comp.os.vms
Subject: Shareable image library / C bug
Message-ID: <8709040748.AA01233@ucbvax.Berkeley.EDU>
Date: Fri, 4-Sep-87 03:48:50 EDT
Article-I.D.: ucbvax.8709040748.AA01233
Posted: Fri Sep  4 03:48:50 1987
Date-Received: Sat, 5-Sep-87 16:58:43 EDT
Sender: usenet@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 46

Hi there,
      I think I have found a bug in the VAX linker. It appears when trying
to use a shareable image library to include the standard VAX C library. If
the following small program (C_BUG)

	#include stdio

	main()
	{	printf("printf\n");
		fprintf(stderr, "stderr\n");
		fprintf(stdout, "stdout\n");
	}

is linked with the library thus:

	or	$ link c_bug,sys$input/opt
		sys$share:vaxcrtl/share

		$ link c_bug,sys$library:vaxcrtl/lib

	or	$ define lnk$library sys$library:vaxcrtl.olb
		$ link c_bug

all is well. However I want to be able to use the sharable image without
having to specify an options each time. This always produces an image which
runs, but which does not behave as expected. When linked in one of the
following ways the only output is the first line, ie. "printf" appears:

		$ lib/create/share myimagelib sys$share:vaxcrtl.exe
		$ link c_bug,myimagelib/lib

	or	$ lib/create/share myimagelib sys$share:vaxcrtl.exe
		$ define lnk$library disk:[dir]myimagelib.olb
		$ link c_bug

	or	$ lib/include/share sys$library:imagelib sys$share:vaxcrtl.exe
		$ link c_bug

Other C runtime I/O routines also fail, eg. freopen(...) stops working in
images linked using a shareable image library to find the C library. Does
anyone know if this is a known bug/restriction ?  Can anyone help please,

			Dave Hines.

Bitnet/NetNorth/Earn:   hines@mail.daresbury.ac.uk
       Arpa         :   hines@mail.daresbury.ac.uk@ucl-cs.arpa