[Bug c++/65039] New: g++ 5 segmentation fault when compiling with -O2 optimization

[Bug c++/65039] New: g++ 5 segmentation fault when compiling with -O2 optimization

[truckman at FreeBSD dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65039

            Bug ID: 65039
           Summary: g++ 5 segmentation fault when compiling with -O2
                    optimization
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: truckman at FreeBSD dot org

Created attachment 34739
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34739&action=edit
preprocessed c++ source that triggers g++ segmentation fault when compiling
with -O2

# g++5 -v
Using built-in specs.
COLLECT_GCC=g++5
COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc5/gcc/x86_64-portbld-freebsd10.1/5.0.0/lto-wrapper
Target: x86_64-portbld-freebsd10.1
Configured with: ./../gcc-5-20150208/configure
--with-build-config=bootstrap-debug --disable-nls
--enable-gnu-indirect-function --libdir=/usr/local/lib/gcc5
--libexecdir=/usr/local/libexec/gcc5 --program-suffix=5
--with-as=/usr/local/bin/as --with-gmp=/usr/local
--with-gxx-include-dir=/usr/local/lib/gcc5/include/c++/
--with-ld=/usr/local/bin/ld --with-pkgversion='FreeBSD Ports Collection'
--with-system-zlib --with-ecj-jar=/usr/local/share/java/ecj-4.5.jar
--enable-languages=c,c++,objc,fortran,java --prefix=/usr/local
--mandir=/usr/local/man --infodir=/usr/local/info/gcc5
--build=x86_64-portbld-freebsd10.1
Thread model: posix
gcc version 5.0.0 20150208 (experimental) (FreeBSD Ports Collection) 


g++ is getting a segmentation fault when compiling a particular c++ file with
-O2 optimization.  Compiling with -O0 or -O1 is successful.

Fails:

# g++5 -std=c++11 -fmessage-length=0 -c -O2 -fno-strict-aliasing
-fvisibility=hidden -fvisibility-inlines-hidden -g1 -Wall -Wextra
-Wendif-labels -Wshadow -Wno-ctor-dtor-privacy     -Wno-non-virtual-dtor 
-Wno-unused-local-typedefs -fpic -fexceptions -fno-enforce-eh-specs -o
_serviceregistration_controller.o _serviceregistration_controller.ii 

/wrkdirs/usr/ports/editors/openoffice-4/work/aoo-4.1.1/main/chart2/source/controller/main/_serviceregistration_controller.cxx:113:1:
internal compiler error: Segmentation fault
 }
 ^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.


Succeeds:

# g++5 -std=c++11 -fmessage-length=0 -c -O1 -fno-strict-aliasing
-fvisibility=hidden -fvisibility-inlines-hidden -g1 -Wall -Wextra
-Wendif-labels -Wshadow -Wno-ctor-dtor-privacy     -Wno-non-virtual-dtor 
-Wno-unused-local-typedefs -fpic -fexceptions -fno-enforce-eh-specs -o
_serviceregistration_controller.o _serviceregistration_controller.ii
#

[Bug ipa/65039] [5 Regression] g++ 5 segmentation fault when compiling with -O2 optimization

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65039

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-02-12
          Component|c++                         |ipa
      Known to work|                            |4.8.3, 4.9.2
            Summary|g++ 5 segmentation fault    |[5 Regression] g++ 5
                   |when compiling with -O2     |segmentation fault when
                   |optimization                |compiling with -O2
                   |                            |optimization
     Ever confirmed|0                           |1
      Known to fail|                            |5.0

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
0xc9602f crash_signal
        /home/jwakely/src/gcc/gcc/gcc/toplev.c:381
0x12c322a tree_check
        /home/jwakely/src/gcc/gcc/gcc/tree.h:2845
0x12c322a ipa_icf::sem_function::init()
        /home/jwakely/src/gcc/gcc/gcc/ipa-icf.c:786
0x12c6a19 ipa_icf::sem_item_optimizer::parse_nonsingleton_classes()
        /home/jwakely/src/gcc/gcc/gcc/ipa-icf.c:1873
0x12cb9b2 ipa_icf::sem_item_optimizer::execute()
        /home/jwakely/src/gcc/gcc/gcc/ipa-icf.c:1729
0x12cc5e1 ipa_icf_driver
        /home/jwakely/src/gcc/gcc/gcc/ipa-icf.c:2459
0x12cc5e1 ipa_icf::pass_ipa_icf::execute(function*)
        /home/jwakely/src/gcc/gcc/gcc/ipa-icf.c:2507

[Bug ipa/65039] [5 Regression] g++ 5 segmentation fault when compiling with -O2 optimization

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65039

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |jakub at gcc dot gnu.org
         Resolution|---                         |FIXED

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed by r220531.