[Bug c++/70887] New: internal compiler error in trunc_int_for_mode, at explow.c:78

[zoidbergx at tlen dot pl]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70887

            Bug ID: 70887
           Summary: internal compiler error in trunc_int_for_mode, at
                    explow.c:78
           Product: gcc
           Version: 5.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zoidbergx at tlen dot pl
  Target Milestone: ---

"g++-5 -v" output:

Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/5/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
5.3.0-3ubuntu1~14.04' --with-bugurl=file:///usr/share/doc/gcc-5/README.Bugs
--enable-languages=c,ada,c++,java,go,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-5 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=gcc4-compatible --disable-libstdcxx-dual-abi
--enable-gnu-unique-object --disable-vtable-verify --enable-libmpx
--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-5-amd64/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-5-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-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 5.3.0 20151204 (Ubuntu 5.3.0-3ubuntu1~14.04)


command line:

g++-5 -std=c++11 -march=haswell -Ofast main.cpp


compiler output:

main.cpp: In function ‘int main(int, char**)’:
main.cpp:82:1: internal compiler error: in trunc_int_for_mode, at explow.c:78
 }
 ^
0x81b350 trunc_int_for_mode(long, machine_mode)
        ../../src/gcc/explow.c:77
0x81248a gen_int_mode(long, machine_mode)
        ../../src/gcc/emit-rtl.c:497
0x81248a immed_wide_int_const(generic_wide_int<wide_int_ref_storage<false> >
const&, machine_mode)
        ../../src/gcc/emit-rtl.c:612
0xa75a9b simplify_const_unary_operation(rtx_code, machine_mode, rtx_def*,
machine_mode)
        ../../src/gcc/simplify-rtx.c:1764
0xa7357a simplify_unary_operation(rtx_code, machine_mode, rtx_def*,
machine_mode)
        ../../src/gcc/simplify-rtx.c:843
0xf51f9a combine_simplify_rtx
        ../../src/gcc/combine.c:5573
0xf54463 subst
        ../../src/gcc/combine.c:5424
0xf540c8 subst
        ../../src/gcc/combine.c:5369
0xf540c8 subst
        ../../src/gcc/combine.c:5369
0xf540c8 subst
        ../../src/gcc/combine.c:5369
0xf540c8 subst
        ../../src/gcc/combine.c:5369
0xf557a1 try_combine
        ../../src/gcc/combine.c:3346
0xf5b30e combine_instructions
        ../../src/gcc/combine.c:1473
0xf5b30e rest_of_handle_combine
        ../../src/gcc/combine.c:14204
0xf5b30e execute
        ../../src/gcc/combine.c:14247
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <file:///usr/share/doc/gcc-5/README.Bugs> for instructions.