[Bug c++/64487] New: internal compiler error: in fold_offsetof_1, at c-family/c-common.c:9857

[Bug c++/64487] New: internal compiler error: in fold_offsetof_1, at c-family/c-common.c:9857

[matthias.hochsteger at tuwien dot ac.at]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64487

            Bug ID: 64487
           Summary: internal compiler error: in fold_offsetof_1, at
                    c-family/c-common.c:9857
           Product: gcc
           Version: 4.9.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: matthias.hochsteger at tuwien dot ac.at

The C++ file:
#include <stddef.h>  

struct foo {
      int member;
};

template < int N>
struct bar {};

template <int N>
struct qux {
        static bar<N+offsetof(foo,member)> static_member;
};

template <int N>
bar<N+offsetof(foo,member)> qux<N>::static_member;

int main() { }

>g++ -c foo.cpp

Error message:
foo.cpp:16:6: internal compiler error: in fold_offsetof_1, at
c-family/c-common.c:9857

The code compiles with GCC 4.4.7, but fails to compile with all other tested
versions (4.6, 4.7, 4.8, 4.9, 5.0).

Tested versions:

- GCC 4.4.7
=================================================
Using built-in specs.
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro
4.4.7-8ubuntu1' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs
--enable-languages=c,c++,fortran --prefix=/usr --program-suffix=-4.4
--enable-shared --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 --libdir=/usr/lib --enable-nls
--with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug
--disable-libmudflap --disable-werror --with-arch-32=i686 --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 4.4.7 (Ubuntu/Linaro 4.4.7-8ubuntu1) 

- GCC 4.6.4
=================================================
Using built-in specs.
COLLECT_GCC=g++-4.6
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.6/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro
4.6.4-6ubuntu2' --with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.6 --enable-shared --enable-linker-build-id
--with-system-zlib --libexecdir=/usr/lib --without-included-gettext
--enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.6
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-gnu-unique-object --disable-libmudflap
--enable-plugin --enable-objc-gc --disable-werror --with-arch-32=i686
--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 4.6.4 (Ubuntu/Linaro 4.6.4-6ubuntu2) 

- GCC 4.7.4
=================================================
Using built-in specs.
COLLECT_GCC=g++-4.7
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.7/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro
4.7.4-2ubuntu1' --with-bugurl=file:///usr/share/doc/gcc-4.7/README.Bugs
--enable-languages=c,c++,go,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.7 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.7 --libdir=/usr/lib --enable-nls
--with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug
--enable-gnu-unique-object --disable-libmudflap --enable-plugin
--with-system-zlib --enable-objc-gc --with-cloog --enable-cloog-backend=ppl
--disable-cloog-version-check --disable-ppl-version-check --enable-multiarch
--disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --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 4.7.4 (Ubuntu/Linaro 4.7.4-2ubuntu1) 

- GCC 4.8.3
=================================================
Using built-in specs.
COLLECT_GCC=g++-4.8
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.8/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.8.3-12ubuntu3'
--with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs
--enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.8 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.8 --libdir=/usr/lib --enable-nls
--with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libmudflap
--enable-plugin --with-system-zlib --disable-browser-plugin
--enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686
--with-abi=m64 --with-multilib-list=m32,m64,mx32 --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 4.8.3 (Ubuntu 4.8.3-12ubuntu3) 

- GCC 4.9.1
=================================================
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.9/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.9.1-16ubuntu6'
--with-bugurl=file:///usr/share/doc/gcc-4.9/README.Bugs
--enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.9 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.9 --libdir=/usr/lib --enable-nls
--with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-vtable-verify
--enable-plugin --with-system-zlib --disable-browser-plugin
--enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.9-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686
--with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib
--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 4.9.1 (Ubuntu 4.9.1-16ubuntu6) 

- GCC 5.0.0
=================================================
Using built-in specs.
COLLECT_GCC=/opt/gcc50/bin/g++
COLLECT_LTO_WRAPPER=/opt/gcc50/libexec/gcc/x86_64-unknown-linux-gnu/5.0.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /home/matthiash/src/gcc-5-20141207/configure
--prefix=/opt/gcc50 --disable-libgcj --enable-checking=release
--disable-multilib
Thread model: posix
gcc version 5.0.0 20141207 (experimental) (GCC)

[Bug c++/64487] internal compiler error: in fold_offsetof_1, at c-family/c-common.c:9857

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64487

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-01-05
                 CC|                            |mpolacek at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed.  fold_offsetof_1 gets C++-specific ARROW_EXPR and is upset about
that.

[Bug c++/64487] [4.8/4.9/5 Regression] internal compiler error: in fold_offsetof_1, at c-family/c-common.c:9857

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64487

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org,
                   |                            |jason at gcc dot gnu.org
            Summary|internal compiler error: in |[4.8/4.9/5 Regression]
                   |fold_offsetof_1, at         |internal compiler error: in
                   |c-family/c-common.c:9857    |fold_offsetof_1, at
                   |                            |c-family/c-common.c:9857

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r156865.

[Bug c++/64487] [4.8/4.9/5 Regression] internal compiler error: in fold_offsetof_1, at c-family/c-common.c:9857

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64487

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Jan  6 20:44:46 2015
New Revision: 219267

URL: https://gcc.gnu.org/viewcvs?rev=219267&root=gcc&view=rev
Log:
    PR c++/64487
    * semantics.c (finish_offsetof): Handle templates here.
    * parser.c (cp_parser_builtin_offsetof): Not here.

Added:
    trunk/gcc/testsuite/g++.dg/template/offsetof3.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/parser.c
    trunk/gcc/cp/semantics.c

[Bug c++/64487] [4.8/4.9 Regression] internal compiler error: in fold_offsetof_1, at c-family/c-common.c:9857

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64487

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |jason at gcc dot gnu.org
            Summary|[4.8/4.9/5 Regression]      |[4.8/4.9 Regression]
                   |internal compiler error: in |internal compiler error: in
                   |fold_offsetof_1, at         |fold_offsetof_1, at
                   |c-family/c-common.c:9857    |c-family/c-common.c:9857

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk so far.

[Bug c++/64487] [4.8/4.9 Regression] internal compiler error: in fold_offsetof_1, at c-family/c-common.c:9857

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64487

--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Wed Jan  7 15:18:39 2015
New Revision: 219311

URL: https://gcc.gnu.org/viewcvs?rev=219311&root=gcc&view=rev
Log:
    PR c++/64487
    * semantics.c (finish_offsetof): Handle templates here.
    * parser.c (cp_parser_builtin_offsetof): Not here.

Added:
    branches/gcc-4_9-branch/gcc/testsuite/g++.dg/template/offsetof3.C
Modified:
    branches/gcc-4_9-branch/gcc/cp/ChangeLog
    branches/gcc-4_9-branch/gcc/cp/parser.c
    branches/gcc-4_9-branch/gcc/cp/semantics.c

[Bug c++/64487] [4.8/4.9 Regression] internal compiler error: in fold_offsetof_1, at c-family/c-common.c:9857

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64487

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.8.5

[Bug c++/64487] [4.8/4.9 Regression] internal compiler error: in fold_offsetof_1, at c-family/c-common.c:9857

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64487

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2

[Bug c++/64487] [4.8/4.9 Regression] internal compiler error: in fold_offsetof_1, at c-family/c-common.c:9857

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64487

--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Jan 13 14:49:17 2015
New Revision: 219536

URL: https://gcc.gnu.org/viewcvs?rev=219536&root=gcc&view=rev
Log:
    PR c++/64487
    * semantics.c (finish_offsetof): Handle templates here.
    * parser.c (cp_parser_builtin_offsetof): Not here.

Added:
    branches/gcc-4_8-branch/gcc/testsuite/g++.dg/template/offsetof3.C
Modified:
    branches/gcc-4_8-branch/gcc/cp/ChangeLog
    branches/gcc-4_8-branch/gcc/cp/parser.c
    branches/gcc-4_8-branch/gcc/cp/semantics.c

[Bug c++/64487] [4.8/4.9 Regression] internal compiler error: in fold_offsetof_1, at c-family/c-common.c:9857

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64487

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #7 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.