Bug in Pascal (Pix) on 4.2BSD

[Ken Mandelberg]

We have found an apparent bug in pix on 4.2 on real reads. The 
same problem does not occur on either pc or pix on 4.1. Has
anyone fixed this yet? The bug report follows.

Ken Mandelberg
Dept of Math and CS
Emory University
{akgua,sb1,gatech}!emory!km



Subject: Pi gives error on real reads
Index:	/usr/src/ucb/pascal/pi 4.2BSD

Description:
	Pix blows up on the second real number read from stdin.
	More precisely, the first real read following the read
	of a real number entered with a decimal point will fail.

Repeat-By:

Script started on Fri Feb  3 18:36:32 1984
% cat test2.p
program cnvx(input,output);
var 
        x:real;

begin
        readln(x); writeln(x);
        readln(x); writeln(x);
end.
% pix test2.p
Execution begins...
1.1
 1.10000000000000e+00
1.2

standard input: Bad data found on real read

Program error
Do you wish to enter the debugger? n

        Error in "cnvx"+2 near line 7.
Execution terminated abnormally.

3 statements executed in 0000.80 seconds cpu time.
%
script done on Fri Feb  3 18:37:43 1984

Fix:
	Unknown. Pc does not have the same bug, so it
can be used when real reads are needed.