[ clisp-Bugs-3122505 ] LOAD does not close input file on abort

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Bugs item #3122505, was opened at 2010-11-29 17:04
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Category: clisp
Group: lisp error
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: https://www.google.com/accounts ()
Assigned to: Bruno Haible (haible)
Summary: LOAD does not close input file on abort

Initial Comment:
If a LOAD is aborted for some reason, the input file is not close. That can cause later errors when trying to open the file with different options. Here is a simplified version of the example that caused me some trouble:
    $ echo 1 > foo.lisp
    $ echo -e '\0' > foo.fas
    $ clisp -norc
      i i i i i i i       ooooo    o        ooooooo   ooooo   ooooo
      I I I I I I I      8     8   8           8     8     o  8    8
      I  \ `+' /  I      8         8           8     8        8    8
       \  `-+-'  /       8         8           8      ooooo   8oooo
	`-__|__-'        8         8           8           8  8
	    |            8     o   8           8     o     8  8
      ------+------       ooooo    8oooooo  ooo8ooo   ooooo   8

    Welcome to GNU CLISP 2.49 (2010-07-07) <http://clisp.cons.org/>

    Copyright (c) Bruno Haible, Michael Stoll 1992, 1993
    Copyright (c) Bruno Haible, Marcus Daniels 1994-1997
    Copyright (c) Bruno Haible, Pierpaolo Bernardi, Sam Steingold 1998
    Copyright (c) Bruno Haible, Sam Steingold 1999-2000
    Copyright (c) Sam Steingold, Bruno Haible 2001-2010

    Type :h and hit Enter for context help.

    [1]> (load "foo.fas")

    *** - READ from #<INPUT BUFFERED FILE-STREAM CHARACTER #P"foo.fas" @1>:
	  illegal character #\Null
    The following restarts are available:
    ABORT          :R1      Abort main loop
    Break 1 [2]> :r1
    [3]> (compile-file "foo.lisp")

    ** - Continuable Error
    OPEN: #<INPUT BUFFERED FILE-STREAM CHARACTER #P"foo.fas" @1> already points to
	 file "/tmp/foo.fas", opening the file again for :OUTPUT may produce
	 unexpected results
    If you continue (by typing 'continue'): Open the file anyway
    The following restarts are also available:
    ABORT          :R1      Abort main loop
    Break 1 [4]> :r1
    [5]> 

It was a surprise to me that the earlier failed LOAD interfered with the later attempt to use COMPILE-FILE. I expected the two operations to be fully independent. If LOAD closed its input file on abort, I think this problem would have been avoided.

I'm using CLISP 2.49 built from source on 64-bit Linux.

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