byte-compiler fails to print complex byte-code data

byte-compiler fails to print complex byte-code data

[David Ponce]

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Hi,

On latest CVS GNU Emacs, byte compilation fails because `prin1' of
complex byte-code data signals error "Apparently circular structure
being printed" in `byte-compile-output-docform'.

Attached file print-test.el is a test case to reproduce the problem.

It simulates code from `byte-compile-output-docform' that prints a
byte code data produced by GNU Emacs 21.3.1.

It is loaded without problem by GNU Emacs 21.3.1 and fails with
"Apparently circular structure being printed" when loaded by CVS
Emacs.

I suspect the problem is caused by this change:

2004-05-10  Richard M. Stallman  <rms@gnu.org>

	* print.c (print_preprocess): Use being_printed, loop_count and
	halftail to detect overdeep nesting and cyclic cdr chains.

David


In GNU Emacs 21.3.50.3 (i686-pc-linux-gnu, GTK+ Version 2.2.4)
  of 2004-05-16 on maunakea
configured using `configure '--with-gtk' '--prefix=/home/ponce''

Important settings:
   value of $LC_ALL: nil
   value of $LC_COLLATE: nil
   value of $LC_CTYPE: nil
   value of $LC_MESSAGES: nil
   value of $LC_MONETARY: nil
   value of $LC_NUMERIC: nil
   value of $LC_TIME: nil
   value of $LANG: en_US.UTF-8
   locale-coding-system: utf-8
   default-enable-multibyte-characters: t


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Re: byte-compiler fails to print complex byte-code data

[David Ponce]

 > I suspect the problem is caused by this change:
 >
 > 2004-05-10  Richard M. Stallman  <rms@gnu.org>
 >
 >     * print.c (print_preprocess): Use being_printed, loop_count and
 >     halftail to detect overdeep nesting and cyclic cdr chains.
 >

FYI, after reverting that change, the bug disapeared.

David