Your message dated Sun, 11 Dec 2011 17:02:33 +0000
with message-id <[email protected]>
and subject line Bug#651454: fixed in clang 3.0-3
has caused the Debian Bug report #651454,
regarding confused about strlcat and strlcpy
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
651454: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=651454
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: clang
Version: 3.0-2
Severity: normal
Apparently, clang 3.0 has a feature that it implicitly assumes the
declaration of well-known C library functions. For example, this is
broken:
$ cat test.c
int
main ()
{
(void) foobar;
return 0;
}
$ $ clang -c test.c
test.c:4:12: error: use of undeclared identifier 'foobar'
(void) foobar;
^
1 error generated.
But this is now magic:
$ cat test.c
int
main ()
{
(void) strcat;
return 0;
}
$ clang -c test.c
test.c:4:12: warning: implicitly declaring C library function 'strcat' with
type 'char *(char *, const char *)'
(void) strcat;
^
test.c:4:12: note: please include the header <string.h> or explicitly provide a
declaration for 'strcat'
1 warning generated.
The problem is now when you do this with strlcat or strlcpy. clang
will report a note just like above with strcat, but the C library on
Debian (GNU/Linux) does not contain strlcat or strlcpy, so this
behavior is wrong.
The reason this is a real problem is that the Autoconf macro
AC_CHECK_DECLS uses code like I showed to determine whether a function
is declared. So calling
AC_CHECK_DECLS([strlcat, strlcpy])
will go by fine, but when you compile the actual program later, it will
produce lots of warnings.
I would argue that the whole feature of implicitly declaring C library
functions is stupid, but at least applying it to strlcat and strlcpy
is wrong on Debian (GNU/Linux). I'm reporting it here first because I
don't know whether it's an upstream or an integration problem. One
would think that the clang build process actually checks what
functions the C library provides.
-- System Information:
Debian Release: wheezy/sid
APT prefers testing
APT policy: (990, 'testing'), (500, 'unstable'), (500, 'stable'), (101,
'experimental')
Architecture: i386 (x86_64)
Kernel: Linux 3.0.0-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages clang depends on:
ii libc6 2.13-21
ii libffi5 3.0.10-3
ii libgcc1 1:4.6.2-5
ii libllvm3.0 3.0-3
ii libstdc++6 4.6.2-5
ii libstdc++6-4.6-dev 4.6.2-5
Versions of packages clang recommends:
ii llvm-3.0-dev 3.0-3
ii python 2.7.2-9
clang suggests no packages.
-- no debconf information
--- End Message ---
--- Begin Message ---
Source: clang
Source-Version: 3.0-3
We believe that the bug you reported is fixed in the latest version of
clang, which is due to be installed in the Debian FTP archive:
clang_3.0-3.debian.tar.gz
to main/c/clang/clang_3.0-3.debian.tar.gz
clang_3.0-3.dsc
to main/c/clang/clang_3.0-3.dsc
clang_3.0-3_amd64.deb
to main/c/clang/clang_3.0-3_amd64.deb
libclang-dev_3.0-3_amd64.deb
to main/c/clang/libclang-dev_3.0-3_amd64.deb
libclang1_3.0-3_amd64.deb
to main/c/clang/libclang1_3.0-3_amd64.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.
Sylvestre Ledru <[email protected]> (supplier of updated clang 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: 1.8
Date: Sat, 10 Dec 2011 19:24:38 +0100
Source: clang
Binary: clang libclang1 libclang-dev
Architecture: source amd64
Version: 3.0-3
Distribution: unstable
Urgency: low
Maintainer: LLVM Packaging Team <[email protected]>
Changed-By: Sylvestre Ledru <[email protected]>
Description:
clang - Low-Level Virtual Machine (LLVM), C language family frontend
libclang-dev - clang library - Development package
libclang1 - clang library
Closes: 645731 651454
Changes:
clang (3.0-3) unstable; urgency=low
.
* 23-strlcpy_strlcat_warning_removed.diff: strlcat and strlcpy does not exist
in Debian (Closes: #651454)
* 21-searchPathHeaders.diff: Update to include also the path to clang headers
(Closes: #645731)
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2ac2ac13bbc4210c3cfa67e4216d5fbb9b1c7698 3361282 libclang1_3.0-3_amd64.deb
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libclang1_3.0-3_amd64.deb
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libclang-dev_3.0-3_amd64.deb
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