Your message dated Sun, 21 Jul 2013 21:07:49 +0200
with message-id <e1v0yyz-0007mr...@goedel.fjf.gnu.de>
and subject line Re: gcc-4.4: -MD leaves empty .d file on preprocessor error
has caused the Debian Bug report #591914,
regarding gcc-4.4: -MD leaves empty .d file on preprocessor error
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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--
591914: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=591914
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
Package: gcc-4.4
Version: 4.4.4-7
Severity: normal
Tags: upstream
*** Please type your report below this line ***
If gcc is invoked with "-MD", and a preprocessor error occurs, an
empty dependency file is left.
This leads to a problem in the following scenario:
- program is compiled OK
- a change in an included header causes a preprocessor error
- next compilation fails (correctly), but leaves empty .d file
- header is fixed
- next compilation does nothing, because object/binary is still
newer than C file, and because of the empty .d file, the
dependency on the (newer) header is lost
The attached file demonstrates this scenario (just "make" to run all
steps, requires GNU make).
A work-around (commented out in the example) is to remove the gcc
output file (normally the object file, in the simplified example the
binary) before calling gcc. But I think gcc should remove the .d
file itself if it can't complete it due to an error.
-- System Information:
Debian Release: squeeze/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: i386 (i686)
Kernel: Linux 2.6.34 (SMP w/1 CPU core)
Locale: LANG=de_DE, LC_CTYPE=de_DE (charmap=ISO-8859-1)
Shell: /bin/sh linked to /bin/dash
Versions of packages gcc-4.4 depends on:
ii binutils 2.20.1-12 The GNU assembler, linker and bina
ii cpp-4.4 4.4.4-7 The GNU C preprocessor
ii gcc-4.4-base 4.4.4-7 The GNU Compiler Collection (base
ii libc6 2.11.2-2 Embedded GNU C Library: Shared lib
ii libgcc1 1:4.4.4-7 GCC support library
ii libgomp1 4.4.4-7 GCC OpenMP (GOMP) support library
Versions of packages gcc-4.4 recommends:
ii libc6-dev 2.11.2-2 Embedded GNU C Library: Developmen
Versions of packages gcc-4.4 suggests:
ii gcc-4.4-doc 4.4.4.nf1-1 documentation for the GNU compiler
pn gcc-4.4-locales <none> (no description available)
ii gcc-4.4-multilib 4.4.4-7 The GNU C compiler (multilib files
pn libcloog-ppl0 <none> (no description available)
pn libgcc1-dbg <none> (no description available)
pn libgomp1-dbg <none> (no description available)
pn libmudflap0-4.4-dev <none> (no description available)
pn libmudflap0-dbg <none> (no description available)
pn libppl-c2 <none> (no description available)
pn libppl7 <none> (no description available)
-- no debconf information
Makefile
Description: Binary data
#include <stdio.h>
#include "foo.h"
int main ()
{
puts (S);
return 0;
}
--- End Message ---
--- Begin Message ---
Seems to be fixed in 4.7.2
--- End Message ---