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and subject line Bug#333231: fixed in flex 2.5.31-36
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Subject: flex generates a C file with improper macro defn; broke Bison 2.1
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From: Paul Eggert <[EMAIL PROTECTED]>
Date: Mon, 10 Oct 2005 17:09:45 -0700
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Package: flex
Version: 2.5.31-34
Tags: patch upstream
flex 2.5.31-34 generates a C file that does not conform to the C
standard, because the code invokes gram_wrap() even though the
gram_wrap macro expects an argument.
This bug is also present in Debian stable, and its presence broke
Bison 2.1 because I used Debian stable flex to build Bison. The bug's
effect is described in
<http://lists.gnu.org/archive/html/bug-bison/2004-02/msg00026.html>;
that message is for Bison 1.875 but the same problem occurs in the
Bison 2.1 distribution because of the bug in flex 2.5.31-31.
(I used flex 2.5.31-31 to generate both Bison 1.875 and Bison 2.1.)
I see from
<http://ftp.debian.org/debian/pool/main/f/flex/flex_2.5.31-34.diff.gz>
that the file
flex-2.5.31/{arch}/flex/flex--debian/flex--debian--2.5/[EMAIL
PROTECTED]/patch-log/patch-2
logs the presence of the bug, but there isn't any patch installed. I
suspect the patch got lost somehow so I'm filing this bug report.
Here is a patch.
2005-10-10 Paul Eggert <[EMAIL PROTECTED]>
* main.c (readin): Don't output an invalid macro definition for
yywrap; some C compilers complain about this.
--- flex-2.5.31-34/main.c 2005-10-10 16:43:31.000000000 -0700
+++ flex-2.5.31-34-yywrap/main.c 2005-10-10 16:49:11.000000000 -0700
@@ -1560,7 +1560,7 @@ void readin ()
}
if (!do_yywrap) {
- outn ("\n#define yywrap(n) 1");
+ outn ("\n#define yywrap() 1");
outn ("#define YY_SKIP_YYWRAP");
}
---------------------------------------
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From: Manoj Srivastava <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
X-Katie: $Revision: 1.56 $
Subject: Bug#333231: fixed in flex 2.5.31-36
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Date: Sun, 23 Oct 2005 13:47:52 -0700
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Source: flex
Source-Version: 2.5.31-36
We believe that the bug you reported is fixed in the latest version of
flex, which is due to be installed in the Debian FTP archive:
flex-doc_2.5.31-36_all.deb
to pool/main/f/flex/flex-doc_2.5.31-36_all.deb
flex_2.5.31-36.diff.gz
to pool/main/f/flex/flex_2.5.31-36.diff.gz
flex_2.5.31-36.dsc
to pool/main/f/flex/flex_2.5.31-36.dsc
flex_2.5.31-36_i386.deb
to pool/main/f/flex/flex_2.5.31-36_i386.deb
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [EMAIL PROTECTED],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Manoj Srivastava <[EMAIL PROTECTED]> (supplier of updated flex package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [EMAIL PROTECTED])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Format: 1.7
Date: Sun, 23 Oct 2005 14:59:05 -0500
Source: flex
Binary: flex-doc flex
Architecture: source i386 all
Version: 2.5.31-36
Distribution: unstable
Urgency: low
Maintainer: Manoj Srivastava <[EMAIL PROTECTED]>
Changed-By: Manoj Srivastava <[EMAIL PROTECTED]>
Description:
flex - A fast lexical analyzer generator.
flex-doc - Documentation for flex (a fast lexical analyzer generator)
Closes: 320134 333231
Changes:
flex (2.5.31-36) unstable; urgency=low
.
* Bug fix: "flex: doxygen warning: argument `str' of command @param is
not found in the argumentlist", thanks to Ludovic Rousseau
(Closes: #320134).
* Bug fix: "flex generates a C file with improper macro defn; broke
Bison 2.1", thanks to Paul Eggert. Well, even though it is legal C99
to have empty arguments in macros (so it is legal to call a macro
taking one argument with no arguments), it was not legal C89 --
therefore, emit tqo different macros, with and without arguments -- to
cater to users running obsolete compilers. (Closes: #333231).
Files:
a211839fdc8470dcd9fe53ab0ed80357 670 devel standard flex_2.5.31-36.dsc
7ed573f6e5f9cf7ddea521bc06bedb8a 211072 devel standard flex_2.5.31-36.diff.gz
63bb249889420feb37e0fccf82ad0eb0 149646 doc optional flex-doc_2.5.31-36_all.deb
f57e8713f0e4302dc3ad34e1b7c1f66c 268566 devel standard flex_2.5.31-36_i386.deb
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