Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!dftsrv!iris613!stailey
From: stailey@iris613.gsfc.nasa.gov (Ken Stailey)
Newsgroups: comp.os.minix
Subject: ST 1.5.0 strlen bug
Summary: strlen((char *)NULL) == core dump
Keywords: bugs ST NULL
Message-ID: <943@dftsrv.gsfc.nasa.gov>
Date: 19 Feb 90 04:51:48 GMT
Sender: news@dftsrv.gsfc.nasa.gov
Reply-To: stailey@iris613.UUCP (Ken Stailey)
Organization: Goddard Space Flight Center Climate and Radiation Branch
Lines: 12

The strlen distributed with ST 1.5.0 will core dump if it is passed a NULL
pointer.  I ran across this when I brought up the nroff clone "ro" on the ST.
You can fix this by putting in an explicit test for mem location zero at
the top i.e.

	if (c == (char *)NULL)
		return 0;



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