--- Comment #7 from jakub at gcc dot gnu dot org 2008-08-18 08:11 ---
To expand on the duplicate DIE issue in C++, say:
namespace N
{
int i;
}
int foo ()
{
using N::i;
return i;
}
emits:
.uleb128 0x3# (DIE (0x55) DW_TAG_imported_declaration)
.byte 0x1 #
--- Comment #3 from jan dot kratochvil at redhat dot com 2008-08-18 08:24
---
The fix was posted at:
http://gcc.gnu.org/ml/gcc-patches/2008-05/msg01857.html
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35998
--- Comment #8 from jakub at gcc dot gnu dot org 2008-08-18 08:43 ---
Looking at the original namespace support in dwarf2out patches I found the
declaration in the namespace and specification in CU is being done for
compatibility with (at that time) existing debuggers. I'm not sure if
--- Comment #3 from sam at gcc dot gnu dot org 2008-08-18 09:00 ---
Subject: Bug 15808
Author: sam
Date: Mon Aug 18 08:58:58 2008
New Revision: 139190
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=139190
Log:
gcc/ada/
PR ada/15808
* sem_ch6.adb
--- Comment #4 from sam at gcc dot gnu dot org 2008-08-18 09:10 ---
This has been fixed in SVN trunk.
--
sam at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #2 from sam at gcc dot gnu dot org 2008-08-18 09:10 ---
Subject: Bug 30827
Author: sam
Date: Mon Aug 18 09:09:24 2008
New Revision: 139192
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=139192
Log:
2008-08-18 Samuel Tardieu [EMAIL PROTECTED]
Robert Dewar
--- Comment #3 from sam at gcc dot gnu dot org 2008-08-18 09:10 ---
Fixed in SVN trunk.
--
sam at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #2 from sam at gcc dot gnu dot org 2008-08-18 09:49 ---
This may be a duplicate of PR 34598.
--
sam at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #15 from manu at gcc dot gnu dot org 2008-08-18 11:31 ---
Subject: Bug 7263
Author: manu
Date: Mon Aug 18 11:30:32 2008
New Revision: 139194
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=139194
Log:
2008-08-18 Manuel Lopez-Ibanez [EMAIL PROTECTED]
PR
g++ from snapshot gcc-4.4-20080815.tar.bz2 gives
v.cc: In member function 'kostenbezug_e
verteilung_c::bezug_ausrechnen(kostenbezug_e) const':
v.cc:12: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See
--- Comment #1 from rguenth at gcc dot gnu dot org 2008-08-18 12:16 ---
confirmed.
#0 0x00bca7e9 in bitmap_insert_into_set_1 (set=0x0, expr=0x1621e58,
allow_constants=0 '\0')
at /space/rguenther/src/svn/trunk/gcc/tree-ssa-pre.c:640
#1 0x00bca82d in
Last known good revision:139006
Known to fail with revision: 139008 .. 139189.
For the changes in this range I only see a few libstdc++ configury changes that
moved tests and generalized them in a seemingly correct manner without typos or
obvious ordering issues, but perhaps there's
--- Comment #2 from rguenth at gcc dot gnu dot org 2008-08-18 12:16 ---
Fixing it yields
t.i: In member function 'kostenbezug_e
verteilung_c::bezug_ausrechnen(kostenbezug_e) const':
t.i:12: error: non-trivial conversion at assignment
iftmp.0
this-bezug
iftmp.0 = this-bezug;
t.i:12:
--- Comment #9 from drow at gcc dot gnu dot org 2008-08-18 12:38 ---
Interesting, I didn't know this was for the benefit of some debugger. I don't
think GDB has needed it in several years. If things work with GDB 6.8 and
without these DIEs, I think it's safe to combine the declaration
--- Comment #12 from vda dot linux at googlemail dot com 2008-08-18 13:02
---
Bootstrap with -O2 on current svn fails. Bootstrap with -Os works.
Bootstrap with -O2 on 4.3.1 works.
Instrumented patch emits C code which can be used to test for incorrect VRP
predictions.
I ran such
--- Comment #1 from paolo dot carlini at oracle dot com 2008-08-18 13:03
---
Therefore, are *all* the errors cause by INTMAX_MAX not being defined? That may
have only to do with the macros on top of bits/postypes.h. Thus you should
check what happens with _GLIBCXX_HAVE_INT64_T,
--- Comment #2 from paolo dot carlini at oracle dot com 2008-08-18 13:16
---
Actually, correctly, in the compilation of comp2.cc, bits/postypes.h doesn't
end up be included, at least on x86_64-linux. Please confirm that, is the most
important thing now. The preprocessed comp2.cc is
--- Comment #3 from paolo dot carlini at oracle dot com 2008-08-18 13:22
---
Yes, just to confirm that the first paragraph in my Comment #1 is a red
herring, sorry. Luckily we are debugging comp2.cc which includes very little,
does not include postypes.h. We should concentrate on the
Although I demonstrated this using 4.1.2 on my host, it probably affects
other versions as well.
As the following code shows:
gcc -c -O1 -Wall -Werror uninitialized-warning.c
extern void called_function(unsigned p);
extern unsigned g;
void
f0(unsigned parm)
{
--- Comment #1 from manu at gcc dot gnu dot org 2008-08-18 13:46 ---
CCP removes the uninitialized use.
*** This bug has been marked as a duplicate of 18501 ***
--
manu at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #17 from manu at gcc dot gnu dot org 2008-08-18 13:46 ---
*** Bug 37148 has been marked as a duplicate of this bug. ***
--
manu at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #16 from manu at gcc dot gnu dot org 2008-08-18 13:55 ---
__extension__ now works for CPP warnings in the C front-end.
The issue with system headers is more difficult since it depends on having two
locations.
C++ lexes everything up front before parsing anything, so the
--- Comment #18 from thutt at vmware dot com 2008-08-18 13:55 ---
This defect has been open nearly 4 years. Any hope of
actually getting a fix commited?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18501
--
jsm28 at gcc dot gnu dot org changed:
What|Removed |Added
Priority|P3 |P2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37102
--
jsm28 at gcc dot gnu dot org changed:
What|Removed |Added
Priority|P3 |P2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37125
--
jsm28 at gcc dot gnu dot org changed:
What|Removed |Added
Priority|P3 |P2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37142
--
jsm28 at gcc dot gnu dot org changed:
What|Removed |Added
Priority|P3 |P2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36817
--- Comment #4 from hp at gcc dot gnu dot org 2008-08-18 14:05 ---
(In reply to comment #1)
Something you should also immediately check is whether those tests actually
were run before the changes and not skipped,
You're right, all of
20_util/ratio/comparisons/comp2.cc
--- Comment #19 from manu at gcc dot gnu dot org 2008-08-18 14:09 ---
(In reply to comment #18)
This defect has been open nearly 4 years. Any hope of
actually getting a fix commited?
To be bluntly honest. No, do not expect a fix in the near/medium future. Not
for GCC 4.4 for sure.
--- Comment #5 from paolo dot carlini at oracle dot com 2008-08-18 14:11
---
Thanks Hans-Peter, probably I don't need further information. I'm already
testing the fix. If you want, you can try to compile ** as a C++ program, this
is important ** the below. If my analysis is correct,
--- Comment #6 from hp at gcc dot gnu dot org 2008-08-18 14:49 ---
(In reply to comment #5)
If you want, you can try to compile ** as a C++ program, this
is important ** the below. If my analysis is correct, should not compile,
meaning we can't really assume a C99-conforming stdint.h
--- Comment #7 from paolo at gcc dot gnu dot org 2008-08-18 15:03 ---
Subject: Bug 37147
Author: paolo
Date: Mon Aug 18 15:02:10 2008
New Revision: 139200
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=139200
Log:
2008-08-18 Paolo Carlini [EMAIL PROTECTED]
PR
--- Comment #8 from paolo dot carlini at oracle dot com 2008-08-18 15:05
---
Fixed.
--
paolo dot carlini at oracle dot com changed:
What|Removed |Added
--- Comment #5 from paul at epcc dot ed dot ac dot uk 2008-08-18 15:09
---
Hi,
Just to add, I too have seen this bug (using gcc 4.2.0, not tried other
versions yet) on a powerpc-ibm-aix5.3.0.0, so I'd be keen to hear of any
resolution.
Regards,
Paul Graham
--
--- Comment #6 from rguenth at gcc dot gnu dot org 2008-08-18 15:20 ---
The problem for the GCC vectorizer is that there are no loads or stores left
in the loop and it doesn't handle vectorizing registers only. This is a
case where real vectorization of straight-line code would be
Worked with: 138952
Known to fail with: 138966 (and up to at least 139189)
Running /x/gcc/libstdc++-v3/testsuite/libstdc++-dg/conformance.exp ...
...
FAIL: 27_io/basic_ostream/inserters_other/char/error_code.cc (test for excess
errors)
WARNING:
--- Comment #7 from rguenth at gcc dot gnu dot org 2008-08-18 15:22 ---
That is, GCCs inner loop is
.L6:
addl$1, %eax
addsd %xmm12, %xmm11
cmpl$1, %eax
addsd %xmm14, %xmm3
addsd %xmm15, %xmm2
addsd %xmm13, %xmm1
--
hp at gcc dot gnu dot org changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last
--- Comment #1 from hp at gcc dot gnu dot org 2008-08-18 15:24 ---
Trivial enough not to bother others...
--
hp at gcc dot gnu dot org changed:
What|Removed |Added
As pointed out :
http://gcc.gnu.org/ml/gcc/2008-08/msg00290.html
The attached testcase yields (on a core2 duo, gcc trunk):
gfortran -O3 -ftree-vectorize -ffast-math -march=native test.f90
time ./a.out
real 0m3.414s
ifort -xT -O3 test.f90
time ./a.out
real 0m1.556s
The
--- Comment #1 from jv244 at cam dot ac dot uk 2008-08-18 15:33 ---
Created an attachment (id=16082)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16082action=view)
testcase
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37150
--- Comment #27 from rguenth at gcc dot gnu dot org 2008-08-18 15:34
---
This should be fixed by disabling the asserts in question.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36998
--- Comment #2 from paolo dot carlini at oracle dot com 2008-08-18 15:37
---
Ok, thanks, patch to include cstdio preapproved for mainline.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37149
--- Comment #3 from paolo dot carlini at oracle dot com 2008-08-18 15:41
---
Well, for 4_3-branch too, because the testcase is buggy anyway, you cannot
assume any of the existing includes to bring in cstdio.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37149
--- Comment #7 from dodji at gcc dot gnu dot org 2008-08-18 15:47 ---
Manuel, yes I know that patches go to gcc-patches@ :-)
I am stacking these here to not loose them, but at the same time, I am not sure
if they are solid enough for submission to gcc-patches. I am still working on
--- Comment #8 from dodji at gcc dot gnu dot org 2008-08-18 15:52 ---
Created an attachment (id=16083)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16083action=view)
Fourth fix candidate
The previous patch was broken for say cross-compilers addressing a 64 target on
a 32 bits
--- Comment #2 from rguenth at gcc dot gnu dot org 2008-08-18 15:55 ---
Note that there is no loop left on the trunk for the testcase, but after
the vectorizer it is all unrolled completely (unvectorized, of course).
Again this looks like missing vectorization of scalar code.
Note that
--- Comment #9 from manu at gcc dot gnu dot org 2008-08-18 16:03 ---
(In reply to comment #7)
I am stacking these here to not loose them, but at the same time, I am not
sure
if they are solid enough for submission to gcc-patches. I am still working on
them.
s/loose/lose/
OK but
--- Comment #3 from burnus at gcc dot gnu dot org 2008-08-18 16:09 ---
Same trend with ifort -O3 (ifort 11beta) and gfortran -O3 --fast-math
-march=native on AMD Athlon64 X2 4800+ / openSUSE 11. [same mulsd/mulpd
numbers]
ifort 2.452s, gfortran 3.848s - 57% slower.
With Richard's
--- Comment #6 from sylvain dot pion at sophia dot inria dot fr 2008-08-18
16:12 ---
Maybe my comment is going to be out of scope, but the question is also
to know what the primary question is here, that is, what usage is supposed
to be supported by -frounding-math.
g++ currently
--- Comment #3 from erik dot moller at cycos dot com 2008-08-18 16:20
---
Created an attachment (id=16084)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16084action=view)
main() for the testcase
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37096
--- Comment #4 from erik dot moller at cycos dot com 2008-08-18 16:20
---
Created an attachment (id=16085)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16085action=view)
the test case
it's as minimal I could get it...
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37096
Polyhedron benchmark's mdbx (http://www.polyhedron.co.uk/MFL6VW74649)
gfortran -fprofile-generate -ffast-math -march=opteron -ftree-loop-linear -O3
mdbx.f90
./a.out
gfortran -fprofile-use -ffast-math -march=opteron -ftree-loop-linear -O3
mdbx.f90
gives an segmentation fault. No segfault without
--- Comment #5 from erik dot moller at cycos dot com 2008-08-18 16:22
---
the printf(shouldn't happen: %d\n, pAR[0]) happens when debug flags -O2 or
-O3 and -msse2 are set.
the printf(nz: %d\n, nZ); seems to do something awful...
void fun(short *pAR)
{
const short tmp =
--- Comment #1 from burnus at gcc dot gnu dot org 2008-08-18 16:24 ---
Presumably working was 2008-08-15-r139121; failing is 2008-08-18-r139184
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37151
--- Comment #2 from manu at gcc dot gnu dot org 2008-08-18 16:32 ---
The code is correct in -std=c89 (the default). Use -Wall or -std=c99 if you
want to be warned about implicit declarations.
See http://c-faq.com/decl/implfdecl.html
--
manu at gcc dot gnu dot org changed:
--- Comment #7 from manu at gcc dot gnu dot org 2008-08-18 16:42 ---
Alias Wuninitialized
--
manu at gcc dot gnu dot org changed:
What|Removed |Added
Alias|
--- Comment #4 from manu at gcc dot gnu dot org 2008-08-18 16:50 ---
This would need to be a GCC extension and those need some high-level approval,
so still unconfirmed, however I am marking as waiting until a decision is
taken.
You should seek opinions/support in the gcc mailing list.
--- Comment #9 from manu at gcc dot gnu dot org 2008-08-18 16:53 ---
To assess whether this is a middle-end issue, the alias dump (with VOPS and
linenumbers) would be relevant.
--
manu at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #5 from manu at gcc dot gnu dot org 2008-08-18 17:14 ---
There is no support for this in the middle-end anyway. Not even for Fortran.
--
manu at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #8 from manu at gcc dot gnu dot org 2008-08-18 17:24 ---
Please provide a preprocessed reduced testcase as similar to the original as
possible.
I think this is not only predicated PHI but our representation of loops may
also have something to do.
--
manu at gcc dot gnu
--
manu at gcc dot gnu dot org changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last
--- Comment #4 from paolo dot carlini at oracle dot com 2008-08-18 17:35
---
Don't worry, I'm handling it together with a few other missing cstdio...
--
paolo dot carlini at oracle dot com changed:
What|Removed |Added
--- Comment #1 from manu at gcc dot gnu dot org 2008-08-18 17:35 ---
We need a preprocessed self-contained, preferably small, testcase. Otherwise we
cannot reproduce the bug ourselves.
See http://gcc.gnu.org/bugs.html
Thanks.
--
manu at gcc dot gnu dot org changed:
--- Comment #5 from manu at gcc dot gnu dot org 2008-08-18 17:48 ---
These are two different bugs.
--
manu at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #5 from paolo at gcc dot gnu dot org 2008-08-18 17:49 ---
Subject: Bug 37149
Author: paolo
Date: Mon Aug 18 17:48:15 2008
New Revision: 139206
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=139206
Log:
2008-08-18 Paolo Carlini [EMAIL PROTECTED]
PR
--- Comment #6 from paolo dot carlini at oracle dot com 2008-08-18 17:50
---
Fixed.
--
paolo dot carlini at oracle dot com changed:
What|Removed |Added
Target
--- Comment #13 from manu at gcc dot gnu dot org 2008-08-18 17:51 ---
Let's give meaningful short descriptions to the bugs, please.
--
manu at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #2 from jellegeerts at gmail dot com 2008-08-18 18:14 ---
Created an attachment (id=16086)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16086action=view)
output of G++ with the `-v -save-temps' flags
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36814
--- Comment #3 from jellegeerts at gmail dot com 2008-08-18 18:15 ---
Created an attachment (id=16087)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16087action=view)
the `.ii' file that G++ created
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36814
--- Comment #4 from jellegeerts at gmail dot com 2008-08-18 18:16 ---
Please see the attachments I created for more information.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36814
--- Comment #3 from manu at gcc dot gnu dot org 2008-08-18 18:28 ---
This is hard. Even the simple cases are hard since the error is detected very
very late. There are far too many ways to declare anything. Perhaps using a
slightly different code patch for C99 would help with -std=c99.
I just tried to compile GNU CC version 4.4 snapshot 20080815 with the
Intel C compiler and it said
gcc/tree-vect-transform.c(2488): warning #187: use of = where == may have
been intended
The source code is
gcc_assert (ncopies = 1);
Perhaps
gcc_assert (ncopies == 1);
was intended ?
--
--- Comment #5 from manu at gcc dot gnu dot org 2008-08-18 18:56 ---
possible_bug.cc:1: error: `cMyClass' has not been declared
possible_bug.cc: In function `bool Init()':
possible_bug.cc:5: error: `some_function' was not declared in this scope
possible_bug.cc:5: warning: unused
--- Comment #20 from manu at gcc dot gnu dot org 2008-08-18 18:56 ---
*** Bug 36814 has been marked as a duplicate of this bug. ***
--
manu at gcc dot gnu dot org changed:
What|Removed |Added
On Linux/x86-64, I got
cc1: warnings being treated as errors
../../src-trunk/gcc/value-prof.c: In function ‘check_counter’:
../../src-trunk/gcc/value-prof.c:469: error: cast from pointer to integer of
different size
../../src-trunk/gcc/value-prof.c:478: error: cast from pointer to integer of
--- Comment #1 from hjl at gcc dot gnu dot org 2008-08-18 19:50 ---
Subject: Bug 37153
Author: hjl
Date: Mon Aug 18 19:48:41 2008
New Revision: 139211
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=139211
Log:
2008-08-18 H.J. Lu [EMAIL PROTECTED]
PR bootstrap/37153
--- Comment #1 from dorit at gcc dot gnu dot org 2008-08-18 20:11 ---
(In reply to comment #0)
I just tried to compile GNU CC version 4.4 snapshot 20080815 with the
Intel C compiler and it said
gcc/tree-vect-transform.c(2488): warning #187: use of = where == may have
been intended
--- Comment #2 from hjl dot tools at gmail dot com 2008-08-18 20:15 ---
Fixed.
--
hjl dot tools at gmail dot com changed:
What|Removed |Added
--
ebotcazou at gcc dot gnu dot org changed:
What|Removed |Added
Severity|blocker |normal
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36998
--- Comment #9 from dfranke at gcc dot gnu dot org 2008-08-18 20:47 ---
Subject: Bug 37032
Author: dfranke
Date: Mon Aug 18 20:46:08 2008
New Revision: 139215
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=139215
Log:
2008-08-18 Daniel Franke [EMAIL PROTECTED]
PR
--- Comment #10 from dfranke at gcc dot gnu dot org 2008-08-18 20:51
---
Closing as WONTFIX.
Reference:
http://gcc.gnu.org/ml/fortran/2008-08/msg00071.html
(and following).
(Updated) Documentation about gfortran's behaviour with preprocessing can be
found in sections 1.3 and 2.3
--- Comment #5 from dfranke at gcc dot gnu dot org 2008-08-18 20:56 ---
Reminder: libbackend.a(cpp_include_defaults) seems to be the place where
standard include paths for targets are available -- including, but not limited
to, /usr/include.
--
i am getting SIGSEGV while starting two glib2 applications.
please take a look at glib2/gogject/gsignal.c code:
-
2280 gboolean continue_emission;
2281
2282 if (!accumulator)
2283return TRUE;
2284
2285 continue_emission = accumulator-func (ihint,
--- Comment #1 from wrobell at pld-linux dot org 2008-08-18 21:05 ---
Created an attachment (id=16088)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16088action=view)
gsignal.i file
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37154
--- Comment #2 from wrobell at pld-linux dot org 2008-08-18 21:05 ---
Created an attachment (id=16089)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16089action=view)
gsignal.s file created by gcc before 'inline' keyword removal
--
--- Comment #3 from wrobell at pld-linux dot org 2008-08-18 21:06 ---
Created an attachment (id=16090)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16090action=view)
gsignal.s file after 'inline' keyword removal
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37154
--- Comment #4 from pinskia at gcc dot gnu dot org 2008-08-18 21:11 ---
gdb claims that problem is at line 2285, variable accumulator is 0x0,
well with optimization, debugging info is not always fully correct.
--
pinskia at gcc dot gnu dot org changed:
What|Removed
--- Comment #9 from sje at cup dot hp dot com 2008-08-18 21:51 ---
Kevin, I can no longer reproduce this bug. I think it was fixed by the same
patch that fixed PR 35659. Are you able to reproduce this or can we close it
as fixed?
--
sje at cup dot hp dot com changed:
Gcc 4.4 revision 139215 failed to bootstrap on Linux/ia64:
/export/gnu/import/svn/gcc-test/bld/./prev-gcc/xgcc
-B/export/gnu/import/svn/gcc-test/bld/./prev-gcc/
-B/usr/local/ia64-unknown-linux-gnu/bin/ -c -DUSE_LIBUNWIND_EXCEPTIONS -g -O2
-DIN_GCC -W -Wall -Wwrite-strings -Wstrict-prototypes
[EMAIL PROTECTED]:~/wk/sqlite-cvs-git/build$ gcc -v
Using built-in specs.
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.3.1-2'
--with-bugurl=file:///usr/share/doc/gcc-4.3/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr
--- Comment #1 from cw at f00f dot org 2008-08-18 22:34 ---
Created an attachment (id=16091)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16091action=view)
malloc.i hangs with -O2 -g on gcc 4.3.1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37156
--- Comment #2 from cw at f00f dot org 2008-08-18 22:37 ---
(sorry, this should have been clarified earlier)
-O1 -g is fine
-O2 is fine
-O2 -g HANGS
dropping __attribute__((warning...) also makes the hang go away --- so
interaction with that an debugging?
gcc 4.1 is fine
gcc 4.2 is
--- Comment #5 from wrobell at pld-linux dot org 2008-08-18 22:40 ---
(In reply to comment #4)
gdb claims that problem is at line 2285, variable accumulator is 0x0,
well with optimization, debugging info is not always fully correct.
i've changed function declaration again to
--- Comment #9 from vincent at vinc17 dot org 2008-08-18 22:58 ---
(In reply to comment #8)
Please provide a preprocessed reduced testcase as similar to the original as
possible.
Here's a similar testcase.
$ cat tst.c
void *foo (void);
void bar (void *);
void f (void)
{
int init
--- Comment #1 from hjl dot tools at gmail dot com 2008-08-18 23:07 ---
Revision 139207:
http://gcc.gnu.org/ml/gcc-cvs/2008-08/msg00769.html
is the cause.
[EMAIL PROTECTED] gcc]$ cat x.i
extern int printf (__const char *__restrict __format, ...);
extern void dw2_asm_output_data_raw
--- Comment #2 from hjl dot tools at gmail dot com 2008-08-18 23:24 ---
The particular insn is
(insn 72 70 73 8 x.i:17 (set (reg:SI 386)
(minus:SI (subreg:SI (reg/f:DI 376 [ ivtmp.14 ]) 0)
(subreg:SI (reg/f:DI 335 virtual-stack-vars) 0))) 165 {subsi3}
(nil))
(gdb)
--- Comment #10 from manu at gcc dot gnu dot org 2008-08-18 23:38 ---
(In reply to comment #9)
(In reply to comment #8)
Please provide a preprocessed reduced testcase as similar to the original as
possible.
Here's a similar testcase.
Thanks.
This is the optimized SSA dump:
f
--- Comment #3 from cw at f00f dot org 2008-08-19 00:38 ---
Someone was able to reproduce the hang and pointed out the first attachment I
put up as edited without the __attribute__
Using built-in specs.
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr
--- Comment #4 from cw at f00f dot org 2008-08-19 00:41 ---
Created an attachment (id=16092)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16092action=view)
updated test case that actually shows the hang
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37156
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