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* [Bug preprocessor/28435] New: -MMD vs not found system header (included from a system header)
@ 2006-07-19 14:00 pinskia at gcc dot gnu dot org
2006-07-19 14:06 ` [Bug preprocessor/28435] " pinskia at gcc dot gnu dot org
` (17 more replies)
0 siblings, 18 replies; 19+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-07-19 14:00 UTC (permalink / raw)
To: gcc-bugs
I really don't know if this is a bug or not but it seems to be.
The steps to reproduce:
mkdir sys
cat >sys/t.h <<FOO
#include <bogus.h>
FOO
cat > t.c <<FOO
#include <t.h>
FOO
gcc -isystem sys t.c -MMD
And notice that this actually compiles successfully even though bougs.h does
not exist. And removing the -MMD option, it actually fails.
--
Summary: -MMD vs not found system header (included from a system
header)
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: preprocessor
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: pinskia at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28435
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* [Bug preprocessor/28435] -MMD vs not found system header (included from a system header)
2006-07-19 14:00 [Bug preprocessor/28435] New: -MMD vs not found system header (included from a system header) pinskia at gcc dot gnu dot org
@ 2006-07-19 14:06 ` pinskia at gcc dot gnu dot org
2006-09-03 20:25 ` pinskia at gcc dot gnu dot org
` (16 subsequent siblings)
17 siblings, 0 replies; 19+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-07-19 14:06 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from pinskia at gcc dot gnu dot org 2006-07-19 14:06 -------
I forgot to say every GCC since at least 2.95.3, I tried has the same behavior.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28435
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug preprocessor/28435] -MMD vs not found system header (included from a system header)
2006-07-19 14:00 [Bug preprocessor/28435] New: -MMD vs not found system header (included from a system header) pinskia at gcc dot gnu dot org
2006-07-19 14:06 ` [Bug preprocessor/28435] " pinskia at gcc dot gnu dot org
@ 2006-09-03 20:25 ` pinskia at gcc dot gnu dot org
2006-10-03 15:56 ` pinskia at gcc dot gnu dot org
` (15 subsequent siblings)
17 siblings, 0 replies; 19+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-09-03 20:25 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from pinskia at gcc dot gnu dot org 2006-09-03 20:25 -------
This looks like the same bug as PR 22231.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
BugsThisDependsOn| |22231
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28435
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug preprocessor/28435] -MMD vs not found system header (included from a system header)
2006-07-19 14:00 [Bug preprocessor/28435] New: -MMD vs not found system header (included from a system header) pinskia at gcc dot gnu dot org
2006-07-19 14:06 ` [Bug preprocessor/28435] " pinskia at gcc dot gnu dot org
2006-09-03 20:25 ` pinskia at gcc dot gnu dot org
@ 2006-10-03 15:56 ` pinskia at gcc dot gnu dot org
2006-10-03 15:56 ` pinskia at gcc dot gnu dot org
` (14 subsequent siblings)
17 siblings, 0 replies; 19+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-10-03 15:56 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from pinskia at gcc dot gnu dot org 2006-10-03 15:56 -------
Confirmed via the dup bug.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2006-10-03 15:56:21
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28435
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug preprocessor/28435] -MMD vs not found system header (included from a system header)
2006-07-19 14:00 [Bug preprocessor/28435] New: -MMD vs not found system header (included from a system header) pinskia at gcc dot gnu dot org
` (2 preceding siblings ...)
2006-10-03 15:56 ` pinskia at gcc dot gnu dot org
@ 2006-10-03 15:56 ` pinskia at gcc dot gnu dot org
2006-10-18 14:04 ` matz at gcc dot gnu dot org
` (13 subsequent siblings)
17 siblings, 0 replies; 19+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-10-03 15:56 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from pinskia at gcc dot gnu dot org 2006-10-03 15:55 -------
*** Bug 29331 has been marked as a duplicate of this bug. ***
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |gcc-bklyn at sneakemail dot
| |com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28435
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug preprocessor/28435] -MMD vs not found system header (included from a system header)
2006-07-19 14:00 [Bug preprocessor/28435] New: -MMD vs not found system header (included from a system header) pinskia at gcc dot gnu dot org
` (3 preceding siblings ...)
2006-10-03 15:56 ` pinskia at gcc dot gnu dot org
@ 2006-10-18 14:04 ` matz at gcc dot gnu dot org
2008-05-09 23:03 ` tromey at gcc dot gnu dot org
` (12 subsequent siblings)
17 siblings, 0 replies; 19+ messages in thread
From: matz at gcc dot gnu dot org @ 2006-10-18 14:04 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from matz at gcc dot gnu dot org 2006-10-18 14:04 -------
The problem is in libcpp/files.c:open_file_failed. It deliberately only
gives a warning when producing dependencies (and under some circumstances
doesn't even give a warning) for missing files. I think it does that under
the assumption that the user gave only -M (with -E implied), so he would
be interested in the preprocessor output nevertheless, and that can be
produced even with missing deps. The problem is, that giving -MD or -MMD
does not imply -E, i.e. the user really wants the deps to just be a
side-effect, as documented. Probably libcpp needs another option which can
be set from the driver, which would make it produce errors instead of
warnings.
--
matz at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |matz at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28435
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug preprocessor/28435] -MMD vs not found system header (included from a system header)
2006-07-19 14:00 [Bug preprocessor/28435] New: -MMD vs not found system header (included from a system header) pinskia at gcc dot gnu dot org
` (4 preceding siblings ...)
2006-10-18 14:04 ` matz at gcc dot gnu dot org
@ 2008-05-09 23:03 ` tromey at gcc dot gnu dot org
2009-09-19 6:16 ` cgd at gcc dot gnu dot org
` (11 subsequent siblings)
17 siblings, 0 replies; 19+ messages in thread
From: tromey at gcc dot gnu dot org @ 2008-05-09 23:03 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from tromey at gcc dot gnu dot org 2008-05-09 23:02 -------
I think we should give an error by default, and only *not* give an
error if -MG is passed. My reasoning is that -MG exists only to disable
this error. I couldn't think of a reason to disable it in other cases.
For instance, it seems to me that "gcc -E" should fail if a header is missing.
I looked at open_file_failed, but I don't understand the reasoning behind
a lot of the logic in there (though see PR 15220).
A comment says:
/* If we are outputting dependencies but not for this file then
don't error because we can still produce correct output. */
... but this seems to be based on incorrect logic to me. A <> include
may define something which affects later inclusions.
I wonder if anybody relies on the current, bogus, behavior.
--
tromey at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tromey at gcc dot gnu dot
| |org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28435
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug preprocessor/28435] -MMD vs not found system header (included from a system header)
2006-07-19 14:00 [Bug preprocessor/28435] New: -MMD vs not found system header (included from a system header) pinskia at gcc dot gnu dot org
` (5 preceding siblings ...)
2008-05-09 23:03 ` tromey at gcc dot gnu dot org
@ 2009-09-19 6:16 ` cgd at gcc dot gnu dot org
2009-09-19 19:26 ` cgd at gcc dot gnu dot org
` (10 subsequent siblings)
17 siblings, 0 replies; 19+ messages in thread
From: cgd at gcc dot gnu dot org @ 2009-09-19 6:16 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from cgd at gcc dot gnu dot org 2009-09-19 06:15 -------
Subject: Bug 28435
Author: cgd
Date: Sat Sep 19 06:15:21 2009
New Revision: 151879
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=151879
Log:
[libcpp/ChangeLog]
2009-09-18 Chris Demetriou <cgd@google.com>
PR preprocessor/28435:
* include/cpplib.h (struct cpp_options): Add new member
deps.need_preprocessor_output.
* files.c (open_file_failed): If preprocessor output is needed
always report an error.
[gcc/ChangeLog]
2009-09-19 Chris Demetriou <cgd@google.com>
PR preprocessor/28435:
* c-opts.c (c_common_handle_option): For -MD and -MMD, indicate
to cpplib that the preprocessor output is needed.
[gcc/testsuite/ChangeLog]
2009-09-19 Chris Demetriou <cgd@google.com>
PR preprocessor/28435:
* gcc.dg/cpp/missing-header-MD.c: New test.
* gcc.dg/cpp/missing-header-MMD.c: New test.
* gcc.dg/cpp/missing-sysheader-MD.c: New test.
* gcc.dg/cpp/missing-sysheader-MMD.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/cpp/missing-header-MD.c
trunk/gcc/testsuite/gcc.dg/cpp/missing-header-MMD.c
trunk/gcc/testsuite/gcc.dg/cpp/missing-sysheader-MD.c
trunk/gcc/testsuite/gcc.dg/cpp/missing-sysheader-MMD.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/c-opts.c
trunk/gcc/testsuite/ChangeLog
trunk/libcpp/ChangeLog
trunk/libcpp/files.c
trunk/libcpp/include/cpplib.h
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28435
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug preprocessor/28435] -MMD vs not found system header (included from a system header)
2006-07-19 14:00 [Bug preprocessor/28435] New: -MMD vs not found system header (included from a system header) pinskia at gcc dot gnu dot org
` (6 preceding siblings ...)
2009-09-19 6:16 ` cgd at gcc dot gnu dot org
@ 2009-09-19 19:26 ` cgd at gcc dot gnu dot org
2009-09-19 21:47 ` hjl dot tools at gmail dot com
` (9 subsequent siblings)
17 siblings, 0 replies; 19+ messages in thread
From: cgd at gcc dot gnu dot org @ 2009-09-19 19:26 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from cgd at gcc dot gnu dot org 2009-09-19 19:26 -------
Fixed in trunk in rev 151879.
--
cgd at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |cgd at gcc dot gnu dot org
Status|NEW |RESOLVED
Keywords| |patch
Known to fail| |4.2.0 4.2.1 4.2.2 4.3.1
| |4.4.0
Resolution| |FIXED
Target Milestone|--- |4.5.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28435
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* [Bug preprocessor/28435] -MMD vs not found system header (included from a system header)
2006-07-19 14:00 [Bug preprocessor/28435] New: -MMD vs not found system header (included from a system header) pinskia at gcc dot gnu dot org
` (7 preceding siblings ...)
2009-09-19 19:26 ` cgd at gcc dot gnu dot org
@ 2009-09-19 21:47 ` hjl dot tools at gmail dot com
2009-09-19 21:47 ` hjl dot tools at gmail dot com
` (8 subsequent siblings)
17 siblings, 0 replies; 19+ messages in thread
From: hjl dot tools at gmail dot com @ 2009-09-19 21:47 UTC (permalink / raw)
To: gcc-bugs
------- Comment #9 from hjl dot tools at gmail dot com 2009-09-19 21:47 -------
On Linux/ia32, Linux/ia64 and Linux/Intel64, I got
FAIL: gcc.dg/cpp/missing-header-MD.c (test for errors, line 5)
FAIL: gcc.dg/cpp/missing-header-MD.c (test for excess errors)
FAIL: gcc.dg/cpp/missing-header-MMD.c (test for errors, line 5)
FAIL: gcc.dg/cpp/missing-header-MMD.c (test for excess errors)
FAIL: gcc.dg/cpp/missing-sysheader-MD.c (test for errors, line 5)
FAIL: gcc.dg/cpp/missing-sysheader-MD.c (test for excess errors)
FAIL: gcc.dg/cpp/missing-sysheader-MMD.c (test for errors, line 5)
FAIL: gcc.dg/cpp/missing-sysheader-MMD.c (test for excess errors)
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2006-10-03 15:56:21 |2009-09-19 21:47:02
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28435
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug preprocessor/28435] -MMD vs not found system header (included from a system header)
2006-07-19 14:00 [Bug preprocessor/28435] New: -MMD vs not found system header (included from a system header) pinskia at gcc dot gnu dot org
` (8 preceding siblings ...)
2009-09-19 21:47 ` hjl dot tools at gmail dot com
@ 2009-09-19 21:47 ` hjl dot tools at gmail dot com
2009-09-20 1:34 ` cgd at google dot com
` (7 subsequent siblings)
17 siblings, 0 replies; 19+ messages in thread
From: hjl dot tools at gmail dot com @ 2009-09-19 21:47 UTC (permalink / raw)
To: gcc-bugs
------- Comment #10 from hjl dot tools at gmail dot com 2009-09-19 21:47 -------
All new tests are failing.
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|FIXED |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28435
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug preprocessor/28435] -MMD vs not found system header (included from a system header)
2006-07-19 14:00 [Bug preprocessor/28435] New: -MMD vs not found system header (included from a system header) pinskia at gcc dot gnu dot org
` (9 preceding siblings ...)
2009-09-19 21:47 ` hjl dot tools at gmail dot com
@ 2009-09-20 1:34 ` cgd at google dot com
2009-09-20 1:57 ` cgd at gcc dot gnu dot org
` (6 subsequent siblings)
17 siblings, 0 replies; 19+ messages in thread
From: cgd at google dot com @ 2009-09-20 1:34 UTC (permalink / raw)
To: gcc-bugs
------- Comment #11 from cgd at google dot com 2009-09-20 01:34 -------
Subject: Re: -MMD vs not found system header
(included from a system header)
Gack, sorry, looks like I screwed this up.
When I retested after updating, I only compared test results
before/after, and saw what I was expecting, I didn't actually recheck
all of the output from the new tests.
I'll see about fixing ASAP.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28435
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug preprocessor/28435] -MMD vs not found system header (included from a system header)
2006-07-19 14:00 [Bug preprocessor/28435] New: -MMD vs not found system header (included from a system header) pinskia at gcc dot gnu dot org
` (10 preceding siblings ...)
2009-09-20 1:34 ` cgd at google dot com
@ 2009-09-20 1:57 ` cgd at gcc dot gnu dot org
2009-09-20 8:08 ` cgd at gcc dot gnu dot org
` (5 subsequent siblings)
17 siblings, 0 replies; 19+ messages in thread
From: cgd at gcc dot gnu dot org @ 2009-09-20 1:57 UTC (permalink / raw)
To: gcc-bugs
------- Comment #12 from cgd at gcc dot gnu dot org 2009-09-20 01:57 -------
(In reply to comment #11)
> Gack, sorry, looks like I screwed this up.
>
> When I retested after updating, I only compared test results
> before/after, and saw what I was expecting, I didn't actually recheck
> all of the output from the new tests.
Actually, it looking at this error further, I can't see how the new tests ever
passed in trunk.
(I initially wrote this in 4.4.0, where I definitely verified that all of the
tests passed... but the 'fatal error' bit was changed in trunk, and so I had to
change the tests. And I know that I diffed the test results in trunk, but I
can only conclude that I never actually verified that they all passed in trunk.
*sigh*)
Anyway, testing the fix now (copying the error-checking style from the current
missing-header-1 test).
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28435
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug preprocessor/28435] -MMD vs not found system header (included from a system header)
2006-07-19 14:00 [Bug preprocessor/28435] New: -MMD vs not found system header (included from a system header) pinskia at gcc dot gnu dot org
` (11 preceding siblings ...)
2009-09-20 1:57 ` cgd at gcc dot gnu dot org
@ 2009-09-20 8:08 ` cgd at gcc dot gnu dot org
2009-09-20 8:10 ` cgd at gcc dot gnu dot org
` (4 subsequent siblings)
17 siblings, 0 replies; 19+ messages in thread
From: cgd at gcc dot gnu dot org @ 2009-09-20 8:08 UTC (permalink / raw)
To: gcc-bugs
------- Comment #13 from cgd at gcc dot gnu dot org 2009-09-20 08:08 -------
Subject: Bug 28435
Author: cgd
Date: Sun Sep 20 08:08:06 2009
New Revision: 151894
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=151894
Log:
[gcc/testsuite/ChangeLog]
2009-09-20 Chris Demetriou <cgd@google.com>
PR preprocessor/28435:
* gcc.dg/cpp/missing-header-MD.c: Make output checking match
gcc.dg/cpp/missing-header-1.c, and add PR number to test comment.
* gcc.dg/cpp/missing-header-MMD.c: Likewise.
* gcc.dg/cpp/missing-sysheader-MD.c: Likewise.
* gcc.dg/cpp/missing-sysheader-MMD.c: Likewise.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/cpp/missing-header-MD.c
trunk/gcc/testsuite/gcc.dg/cpp/missing-header-MMD.c
trunk/gcc/testsuite/gcc.dg/cpp/missing-sysheader-MD.c
trunk/gcc/testsuite/gcc.dg/cpp/missing-sysheader-MMD.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28435
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug preprocessor/28435] -MMD vs not found system header (included from a system header)
2006-07-19 14:00 [Bug preprocessor/28435] New: -MMD vs not found system header (included from a system header) pinskia at gcc dot gnu dot org
` (12 preceding siblings ...)
2009-09-20 8:08 ` cgd at gcc dot gnu dot org
@ 2009-09-20 8:10 ` cgd at gcc dot gnu dot org
2010-02-07 20:33 ` pinskia at gcc dot gnu dot org
` (3 subsequent siblings)
17 siblings, 0 replies; 19+ messages in thread
From: cgd at gcc dot gnu dot org @ 2009-09-20 8:10 UTC (permalink / raw)
To: gcc-bugs
------- Comment #14 from cgd at gcc dot gnu dot org 2009-09-20 08:10 -------
HJ, I believe I've fixed the tests now:
PASS: gcc.dg/cpp/missing-header-MD.c (test for warnings, line )
PASS: gcc.dg/cpp/missing-header-MD.c (test for warnings, line )
PASS: gcc.dg/cpp/missing-header-MD.c (test for excess errors)
PASS: gcc.dg/cpp/missing-header-MMD.c (test for warnings, line )
PASS: gcc.dg/cpp/missing-header-MMD.c (test for warnings, line )
PASS: gcc.dg/cpp/missing-header-MMD.c (test for excess errors)
PASS: gcc.dg/cpp/missing-sysheader-MD.c (test for warnings, line )
PASS: gcc.dg/cpp/missing-sysheader-MD.c (test for warnings, line )
PASS: gcc.dg/cpp/missing-sysheader-MD.c (test for excess errors)
PASS: gcc.dg/cpp/missing-sysheader-MMD.c (test for warnings, line )
PASS: gcc.dg/cpp/missing-sysheader-MMD.c (test for warnings, line )
PASS: gcc.dg/cpp/missing-sysheader-MMD.c (test for excess errors)
thanks for letting me know.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28435
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug preprocessor/28435] -MMD vs not found system header (included from a system header)
2006-07-19 14:00 [Bug preprocessor/28435] New: -MMD vs not found system header (included from a system header) pinskia at gcc dot gnu dot org
` (13 preceding siblings ...)
2009-09-20 8:10 ` cgd at gcc dot gnu dot org
@ 2010-02-07 20:33 ` pinskia at gcc dot gnu dot org
2010-02-07 21:25 ` cgd at google dot com
` (2 subsequent siblings)
17 siblings, 0 replies; 19+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2010-02-07 20:33 UTC (permalink / raw)
To: gcc-bugs
------- Comment #15 from pinskia at gcc dot gnu dot org 2010-02-07 20:33 -------
*** Bug 42921 has been marked as a duplicate of this bug. ***
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rhansen at bbn dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28435
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug preprocessor/28435] -MMD vs not found system header (included from a system header)
2006-07-19 14:00 [Bug preprocessor/28435] New: -MMD vs not found system header (included from a system header) pinskia at gcc dot gnu dot org
` (14 preceding siblings ...)
2010-02-07 20:33 ` pinskia at gcc dot gnu dot org
@ 2010-02-07 21:25 ` cgd at google dot com
2010-04-06 11:20 ` rguenth at gcc dot gnu dot org
2010-07-31 9:35 ` rguenth at gcc dot gnu dot org
17 siblings, 0 replies; 19+ messages in thread
From: cgd at google dot com @ 2010-02-07 21:25 UTC (permalink / raw)
To: gcc-bugs
------- Comment #16 from cgd at google dot com 2010-02-07 21:24 -------
(In reply to comment #15)
> *** Bug 42921 has been marked as a duplicate of this bug. ***
>
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
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28435
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* [Bug preprocessor/28435] -MMD vs not found system header (included from a system header)
2006-07-19 14:00 [Bug preprocessor/28435] New: -MMD vs not found system header (included from a system header) pinskia at gcc dot gnu dot org
` (15 preceding siblings ...)
2010-02-07 21:25 ` cgd at google dot com
@ 2010-04-06 11:20 ` rguenth at gcc dot gnu dot org
2010-07-31 9:35 ` rguenth at gcc dot gnu dot org
17 siblings, 0 replies; 19+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2010-04-06 11:20 UTC (permalink / raw)
To: gcc-bugs
------- Comment #17 from rguenth at gcc dot gnu dot org 2010-04-06 11:19 -------
GCC 4.5.0 is being released. Deferring to 4.5.1.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.5.0 |4.5.1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28435
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* [Bug preprocessor/28435] -MMD vs not found system header (included from a system header)
2006-07-19 14:00 [Bug preprocessor/28435] New: -MMD vs not found system header (included from a system header) pinskia at gcc dot gnu dot org
` (16 preceding siblings ...)
2010-04-06 11:20 ` rguenth at gcc dot gnu dot org
@ 2010-07-31 9:35 ` rguenth at gcc dot gnu dot org
17 siblings, 0 replies; 19+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2010-07-31 9:35 UTC (permalink / raw)
To: gcc-bugs
------- Comment #18 from rguenth at gcc dot gnu dot org 2010-07-31 09:29 -------
GCC 4.5.1 is being released, adjusting target milestone.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.5.1 |4.5.2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28435
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end of thread, other threads:[~2010-07-31 9:30 UTC | newest]
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2006-07-19 14:00 [Bug preprocessor/28435] New: -MMD vs not found system header (included from a system header) pinskia at gcc dot gnu dot org
2006-07-19 14:06 ` [Bug preprocessor/28435] " pinskia at gcc dot gnu dot org
2006-09-03 20:25 ` pinskia at gcc dot gnu dot org
2006-10-03 15:56 ` pinskia at gcc dot gnu dot org
2006-10-03 15:56 ` pinskia at gcc dot gnu dot org
2006-10-18 14:04 ` matz at gcc dot gnu dot org
2008-05-09 23:03 ` tromey at gcc dot gnu dot org
2009-09-19 6:16 ` cgd at gcc dot gnu dot org
2009-09-19 19:26 ` cgd at gcc dot gnu dot org
2009-09-19 21:47 ` hjl dot tools at gmail dot com
2009-09-19 21:47 ` hjl dot tools at gmail dot com
2009-09-20 1:34 ` cgd at google dot com
2009-09-20 1:57 ` cgd at gcc dot gnu dot org
2009-09-20 8:08 ` cgd at gcc dot gnu dot org
2009-09-20 8:10 ` cgd at gcc dot gnu dot org
2010-02-07 20:33 ` pinskia at gcc dot gnu dot org
2010-02-07 21:25 ` cgd at google dot com
2010-04-06 11:20 ` rguenth at gcc dot gnu dot org
2010-07-31 9:35 ` rguenth at gcc dot gnu dot org
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