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Article View: comp.bugs.sys5
Article #57

Streams adjmsg bug

#57
From: Linwood Varney
Date: Wed, 09 Aug 1989 06:23
23 lines
1110 bytes
The streams function adjmsg() will fail in certain cases if trimming
bytes from the end of a message.  If adjmsg() is passed a message that
contains more than one message block, or more specifically if the last
message block is larger than the number of bytes you wish to trim off.

The while statement in the function adjmsg():

		bp = mp;
		while (len && bp) {
			bp = mp;

fails the second time through since bp is also used within an inner loop.
If the while statement is changed to:

/*		bp = mp;	(statement no longer needed */
		while (len) {
			bp = mp;

the function works as documented.

	- Linwood Varney		linwood@ingr.com
	  Network Communications	Intergraph Corp.
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!watmath!att!tut.cis.ohio-state.edu!gem.mps.ohio-state.edu!ginosko!uunet!ingr!b11!linwood
From: linwood@b11.ingr.com (Linwood Varney)
Newsgroups: comp.bugs.sys5
Subject: Streams adjmsg bug
Keywords: streams adjmsg
Message-ID: <5650@b11.ingr.com>
Date: 9 Aug 89 06:23:09 GMT
Reply-To: linwood@b11.UUCP (Linwood Varney)
Organization: Intergraph Corp. Huntsville, AL
Lines: 23