[Bug c++/56694] New: Internal compiler error when compiling OpenMP code

[Bug c++/56694] New: Internal compiler error when compiling OpenMP code

[jurgen.knodlseder at irap dot omp.eu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56694

             Bug #: 56694
           Summary: Internal compiler error when compiling OpenMP code
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: jurgen.knodlseder@irap.omp.eu


While compiling my GammaLib suite with the new gcc 4.8.0 an internal compiler
error occurred in a routine that uses OpenMP for multi-threading. The following
message occurs:

GObservations_optimizer.cpp: In member function 'virtual void
GObservations::optimizer::eval(const GOptimizerPars&)':
GObservations_optimizer.cpp:431:1: internal compiler error: in change_scope, at
final.c:1575
 }
 ^
0x8340bb8 change_scope
    ../../gcc-4.8.0/gcc/final.c:1575
0x8344526 reemit_insn_block_notes
    ../../gcc-4.8.0/gcc/final.c:1650
0x8344526 final_start_function(rtx_def*, _IO_FILE*, int)
    ../../gcc-4.8.0/gcc/final.c:1743
0x8345b9a rest_of_handle_final
    ../../gcc-4.8.0/gcc/final.c:4341
libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I../.. -I../../include -I../../src
-I../../src/support -I/home/jenkins/cfitsio/cfitsio3310/include
-I/home/jenkins/readline/readline62/include
-I/home/jenkins/python/python273/include/python2.7 -g -O2 -fopenmp -c
GObservation.cpp -o GObservation.o >/dev/null 2>&1
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.

I created a branch on GitHub to download the relevant code:
https://github.com/gammalib/gammalib/tree/gcc480-compile-error

[Bug c++/56694] Internal compiler error when compiling OpenMP code

[mpolacek at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56694

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2013-03-23
                 CC|                            |mpolacek at gcc dot gnu.org
     Ever Confirmed|0                           |1

--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> 2013-03-23 09:19:11 UTC ---
Please provide a preprocessed source.

[Bug c++/56694] Internal compiler error when compiling OpenMP code

[jurgen.knodlseder at irap dot omp.eu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56694

--- Comment #2 from Jürgen Knödlseder <jurgen.knodlseder at irap dot omp.eu> 2013-03-23 10:22:28 UTC ---
What do you mean by preprocessed source ???

Le 23 mars 2013 à 10:19, mpolacek at gcc dot gnu.org a écrit :

> 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56694
> 
> Marek Polacek <mpolacek at gcc dot gnu.org> changed:
> 
>           What    |Removed                     |Added
> ----------------------------------------------------------------------------
>             Status|UNCONFIRMED                 |WAITING
>   Last reconfirmed|                            |2013-03-23
>                 CC|                            |mpolacek at gcc dot gnu.org
>     Ever Confirmed|0                           |1
> 
> --- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> 2013-03-23 09:19:11 UTC ---
> Please provide a preprocessed source.
> 
> -- 
> Configure bugmail: http://gcc.gnu.org/bugzilla/userprefs.cgi?tab=email
> ------- You are receiving this mail because: -------
> You reported the bug.

============================
Please note my new e-mail address:
Jurgen.Knodlseder@irap.omp.eu
============================
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Subject: [Bug c++/56694] Internal compiler error when compiling OpenMP code
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idV694

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> 2013-03-23 10:28:57 UTC ---
Add -save-temps to the command line and attach the resulting *.ii file.
This is all mentioned in http://gcc.gnu.org/bugs/ .

[Bug c++/56694] Internal compiler error when compiling OpenMP code

[jurgen.knodlseder at irap dot omp.eu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56694

--- Comment #4 from Jürgen Knödlseder <jurgen.knodlseder at irap dot omp.eu> 2013-03-23 12:24:18 UTC ---
Okay, here it comes. But believe me or not: with the -save-temps option the
code compiles through!

I rechecked by removing the option, and the code fails again. Putting it back
makes it work ... so this is a repeatable experiment.

Cheers,
Jürgen
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From: "nmm1 at cam dot ac.uk" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/56697] New: Erroneous rejection of use of private constructor in public method
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idV697

             Bug #: 56697
           Summary: Erroneous rejection of use of private constructor in
                    public method
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: nmm1@cam.ac.uk


What I believe is an erroneous rejection of a program.  Unfortunately, the
C++ standard is too contorted in this area for me to be absolutely sure,
Anyway, Intel is happy with it.

wheeler$cat junk.cpp
class weeble {
public:
    weeble () {}
    class wurble {
        int n;
        wurble (int k) : n(k) {}
    public:
        wurble () : n(0) {}
    };
    wurble fred (int k) {return wurble(k);}
};

int main () {
    weeble a;
    weeble::wurble b = a.fred(42);
}


wheeler$/home/nmm/GCC/bin/g++ -v
Using built-in specs.
COLLECT_GCC=/home/nmm/GCC/bin/g++
COLLECT_LTO_WRAPPER=/home/nmm/GCC/libexec/gcc/x86_64-unknown-linux-gnu/4.8.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-4.8-20130127/configure --prefix=/home/nmm/GCC
--disable-bootstrap --enable-checking=all --enable-languages=c,c++,fortran :
(reconfigured) ../gcc-4.8-20130127/configure --prefix=/home/nmm/GCC
--disable-bootstrap --enable-languages=c,c++,fortran
Thread model: posix
gcc version 4.8.0 20130127 (experimental) (GCC)


wheeler$/home/nmm/GCC/bin/g++ junk.cpp
junk.cpp: In member function 'weeble::wurble weeble::fred(int)':
junk.cpp:6:9: error: 'weeble::wurble::wurble(int)' is private
         wurble (int k) : n(k) {}
         ^
junk.cpp:10:41: error: within this context
     wurble fred (int k) {return wurble(k);}
                                         ^

[Bug c++/56694] [4.8/4.9 Regression] Internal compiler error when compiling OpenMP code

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56694

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |ASSIGNED
         AssignedTo|unassigned at gcc dot       |rguenth at gcc dot gnu.org
                   |gnu.org                     |
   Target Milestone|---                         |4.8.1
            Summary|Internal compiler error     |[4.8/4.9 Regression]
                   |when compiling OpenMP code  |Internal compiler error
                   |                            |when compiling OpenMP code

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> 2013-03-25 10:25:58 UTC ---
Confirmed.

> /abuild/rguenther/gcc48-g/gcc/cc1plus  -quiet t.ii -fopenmp -m32 -O2
GObservations_optimizer.cpp: In member function 'virtual void
GObservations::optimizer::eval(const GOptimizerPars&)':
GObservations_optimizer.cpp:188:6: error: location references block not in
block tree
# VUSE <.MEM_295>
std::terminate ();

GObservations_optimizer.cpp:188:6: internal compiler error: verify_gimple
failed
0xc92abe verify_gimple_in_cfg(function*)
        /space/rguenther/src/svn/gcc-4_8-branch/gcc/tree-cfg.c:4738
0xb768c1 execute_function_todo
        /space/rguenther/src/svn/gcc-4_8-branch/gcc/passes.c:1963
0xb75c19 do_per_function
        /space/rguenther/src/svn/gcc-4_8-branch/gcc/passes.c:1701
0xb769e5 execute_todo
        /space/rguenther/src/svn/gcc-4_8-branch/gcc/passes.c:1996
Please submit a full bug report,

I will take a look.

[Bug c++/56694] [4.8/4.9 Regression] Internal compiler error when compiling OpenMP code

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56694

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> 2013-03-25 12:28:55 UTC ---
Reduced testcase:

class GException {
public:
    class vector_mismatch {
    public:
        vector_mismatch(int size1, int size2);
    };
};
class GVector{
public:
    GVector& operator+=(const GVector& v);
    int m_num;
    double* m_data;
};
inline GVector& GVector::operator+= (const GVector& v)
{
  if (m_num != v.m_num)
    throw GException::vector_mismatch(m_num, v.m_num);
  for (int i = 0; i < m_num; ++i)  m_data[i] += v.m_data[i];
};
void eval(GVector* m_gradient, GVector* vect_cpy_grad, int n)
{
#pragma omp sections
    {
      for (int i = 0; i < n; ++i)
        *m_gradient += vect_cpy_grad[i];
    }
}

[Bug c++/56694] [4.8/4.9 Regression] Internal compiler error when compiling OpenMP code

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56694

--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> 2013-03-25 12:49:34 UTC ---
It's the lower RESX pass that causes the location to appear.  And likely
bogus locations in the EH on-the-side info:

              x = gimple_build_call (fn, 0);
              gimple_set_location (x, dst_r->u.must_not_throw.failure_loc);

thus, the must_not_throw failure_loc either shouldn't have a BLOCK associated
or it needs re-mapping during inlining / cloning.

Using LOCATION_LOCUS above fixes the ICE.

[Bug c++/56694] [4.8/4.9 Regression] Internal compiler error when compiling OpenMP code

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56694

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
      Known to fail|                            |4.8.0

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> 2013-03-25 14:54:26 UTC ---
Author: rguenth
Date: Mon Mar 25 14:46:08 2013
New Revision: 197047

URL: http://gcc.gnu.org/viewcvs?rev=197047&root=gcc&view=rev
Log:
2013-03-25  Richard Biener  <rguenther@suse.de>

    PR middle-end/56694
    * tree-eh.c (lower_eh_must_not_throw): Strip BLOCKs from the
    must-not-throw stmt location.

    * g++.dg/torture/pr56694.C: New testcase.

Added:
    trunk/gcc/testsuite/g++.dg/torture/pr56694.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-eh.c

Author: rguenth
Date: Mon Mar 25 14:47:56 2013
New Revision: 197048

URL: http://gcc.gnu.org/viewcvs?rev=197048&root=gcc&view=rev
Log:
2013-03-25  Richard Biener  <rguenther@suse.de>

    PR middle-end/56694
    * tree-eh.c (lower_eh_must_not_throw): Strip BLOCKs from the
    must-not-throw stmt location.

    * g++.dg/torture/pr56694.C: New testcase.

Added:
    branches/gcc-4_8-branch/gcc/testsuite/g++.dg/torture/pr56694.C
Modified:
    branches/gcc-4_8-branch/gcc/ChangeLog
    branches/gcc-4_8-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_8-branch/gcc/tree-eh.c