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* [Bug preprocessor/42921] No error with missing header and -MM
[not found] <bug-42921-4@http.gcc.gnu.org/bugzilla/>
@ 2013-05-08 5:30 ` skannan at redhat dot com
0 siblings, 0 replies; 3+ messages in thread
From: skannan at redhat dot com @ 2013-05-08 5:30 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42921
Shakthi Kannan <skannan at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |skannan at redhat dot com
--- Comment #3 from Shakthi Kannan <skannan at redhat dot com> 2013-05-08 05:30:25 UTC ---
Confirmed.
$ ./install/bin/gcc -MM -MF foo.d foo.c && echo succeeded || echo failed
succeeded
$ ./install/bin/gcc -v
Using built-in specs.
COLLECT_GCC=./install/bin/gcc
COLLECT_LTO_WRAPPER=/home/mbuf/testing/gcc/42921/install/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc/configure --prefix=/home/mbuf/testing/gcc/42921/install
Thread model: posix
gcc version 4.9.0 20130507 (experimental) (GCC)
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug preprocessor/42921] New: No error with missing header and -MM
@ 2010-02-01 3:50 rhansen at bbn dot com
2010-02-07 20:33 ` [Bug preprocessor/42921] " pinskia at gcc dot gnu dot org
2010-02-08 5:33 ` rhansen at bbn dot com
0 siblings, 2 replies; 3+ messages in thread
From: rhansen at bbn dot com @ 2010-02-01 3:50 UTC (permalink / raw)
To: gcc-bugs
The -MM option does not raise an error if the source includes a non-existent
header using angle brackets:
$ echo "#include <does_not_exist.h>" > foo.c
$ gcc -MM -MF foo.d foo.c && echo succeeded || echo failed
succeeded
$ cat foo.d
foo.o: foo.c
Including a file using double quotes does produce an error as expected:
$ echo '#include "does_not_exist.h"' > foo.c
$ gcc -MM -MF foo.d foo.c && echo succeeded || echo failed
foo.c:1:28: fatal error: does_not_exist.h: No such file or directory
compilation terminated.
failed
Seen in current trunk:
$ gcc -v
Using built-in specs.
COLLECT_GCC=./install/bin/gcc
COLLECT_LTO_WRAPPER=/home/rhansen/gcc_build/install/libexec/gcc/x86_64-unknown-linux-gnu/4.5.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc/configure --prefix=/home/rhansen/gcc_build/install
--with-local-prefix=/home/rhansen/gcc_build/install --enable-languages=c
Thread model: posix
gcc version 4.5.0 20100131 (experimental) [trunk revision 156418] (GCC)
And in 4.4.1 from Ubuntu Karmic:
$ gcc -v
Using built-in specs.
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.4.1-4ubuntu9'
--with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared
--enable-multiarch --enable-linker-build-id --with-system-zlib
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.4 --program-suffix=-4.4 --enable-nls
--enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --disable-werror
--with-arch-32=i486 --with-tune=generic --enable-checking=release
--build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu9)
--
Summary: No error with missing header and -MM
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: preprocessor
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: rhansen at bbn dot com
GCC build triplet: x86_64-linux-gnu
GCC host triplet: x86_64-linux-gnu
GCC target triplet: x86_64-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42921
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug preprocessor/42921] No error with missing header and -MM
2010-02-01 3:50 [Bug preprocessor/42921] New: " rhansen at bbn dot com
@ 2010-02-07 20:33 ` pinskia at gcc dot gnu dot org
2010-02-08 5:33 ` rhansen at bbn dot com
1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2010-02-07 20:33 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from pinskia at gcc dot gnu dot org 2010-02-07 20:33 -------
*** This bug has been marked as a duplicate of 28435 ***
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |DUPLICATE
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42921
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug preprocessor/42921] No error with missing header and -MM
2010-02-01 3:50 [Bug preprocessor/42921] New: " rhansen at bbn dot com
2010-02-07 20:33 ` [Bug preprocessor/42921] " pinskia at gcc dot gnu dot org
@ 2010-02-08 5:33 ` rhansen at bbn dot com
1 sibling, 0 replies; 3+ messages in thread
From: rhansen at bbn dot com @ 2010-02-08 5:33 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from rhansen at bbn dot com 2010-02-08 05:33 -------
Reopening; this is a different issue than bug 28435.
Chris Demetriou in bug 28435, comment 16 says:
> FWIW, I actually think that's a different issue (though certainly related).
>
> this bug was all about -MD and -MMD -- and what happens when an object file
> needs to be output, but cannot be because of a missing include.
>
> AFAICT, that bug is all about, what should the handling of -MM be vs.
> missing system headers.
>
> That having been said, I will note that with:
> gcc version 3.4.4 (cygming special, gdc 0.12, using dmd 0.125)
>
> you get the results:
>
> [cgd@laptop tmp]$ echo "#include <does_not_exist.h>" > foo.c
> [cgd@laptop tmp]$ gcc -MM -MF foo.d foo.c && echo succeeded || echo failed
> foo.c:1:28: does_not_exist.h: No such file or directory
> failed
> [cgd@laptop tmp]$ echo '#include "does_not_exist.h"' > foo.c
> [cgd@laptop tmp]$ gcc -MM -MF foo.d foo.c && echo succeeded || echo failed
> foo.c:1:28: does_not_exist.h: No such file or directory
> failed
>
> So this certainly used to behave as the submitter of 42921 expected at
> *some* point.
>
> As of 4.2.2 (the next version I have handy after 3.4.4) the first case
> reported "succeeded" (and the second failed).
>
> --cgd
--
rhansen at bbn dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|DUPLICATE |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42921
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2013-05-08 5:30 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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[not found] <bug-42921-4@http.gcc.gnu.org/bugzilla/>
2013-05-08 5:30 ` [Bug preprocessor/42921] No error with missing header and -MM skannan at redhat dot com
2010-02-01 3:50 [Bug preprocessor/42921] New: " rhansen at bbn dot com
2010-02-07 20:33 ` [Bug preprocessor/42921] " pinskia at gcc dot gnu dot org
2010-02-08 5:33 ` rhansen at bbn dot com
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