https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78395
--- Comment #4 from Chris <cmacmackin at gmail dot com> ---
I tried compiling (my original example) on a different box, this one with
gfortran 6.2.0 obtained from the ubuntu-toolchain-r/test PPA. I got
Driving: gfortran-6 -v minimal.f90 -l gfortran -l m -shared-libgcc
Using built-in specs.
COLLECT_GCC=gfortran-6
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/6/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
6.2.0-3ubuntu11~16.04' --with-bugurl=file:///usr/share/doc/gcc-6/README.Bugs
--enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-6 --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=new --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-6-amd64/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-6-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-6-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 6.2.0 20160901 (Ubuntu 6.2.0-3ubuntu11~16.04)
COLLECT_GCC_OPTIONS='-v' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
/usr/lib/gcc/x86_64-linux-gnu/6/f951 minimal.f90 -quiet -dumpbase minimal.f90
-mtune=generic -march=x86-64 -auxbase minimal -version -fintrinsic-modules-path
/usr/lib/gcc/x86_64-linux-gnu/6/finclude -o /tmp/chris/ccDLOYCy.s
GNU Fortran (Ubuntu 6.2.0-3ubuntu11~16.04) version 6.2.0 20160901
(x86_64-linux-gnu)
compiled by GNU C version 6.2.0 20160901, GMP version 6.1.0, MPFR
version 3.1.4, MPC version 1.0.3, isl version 0.15
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU Fortran2008 (Ubuntu 6.2.0-3ubuntu11~16.04) version 6.2.0 20160901
(x86_64-linux-gnu)
compiled by GNU C version 6.2.0 20160901, GMP version 6.1.0, MPFR
version 3.1.4, MPC version 1.0.3, isl version 0.15
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
f951: internal compiler error: in gfc_add_component_ref, at fortran/class.c:241
0x5dede4 gfc_add_component_ref(gfc_expr*, char const*)
../../src/gcc/fortran/class.c:241
0x6564f1 resolve_typebound_function
../../src/gcc/fortran/resolve.c:6014
0x6564f1 gfc_resolve_expr(gfc_expr*)
../../src/gcc/fortran/resolve.c:6357
0x60730a gfc_extend_expr(gfc_expr*)
../../src/gcc/fortran/interface.c:3943
0x656064 resolve_operator
../../src/gcc/fortran/resolve.c:3850
0x656064 gfc_resolve_expr(gfc_expr*)
../../src/gcc/fortran/resolve.c:6339
0x65cab3 gfc_resolve_code(gfc_code*, gfc_namespace*)
../../src/gcc/fortran/resolve.c:10459
0x65f282 resolve_codes
../../src/gcc/fortran/resolve.c:15656
0x65f37e gfc_resolve(gfc_namespace*)
../../src/gcc/fortran/resolve.c:15691
0x64a62a resolve_all_program_units
../../src/gcc/fortran/parse.c:5854
0x64a62a gfc_parse_file()
../../src/gcc/fortran/parse.c:6106
0x68c1c2 gfc_be_parse_file
../../src/gcc/fortran/f95-lang.c:201
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-6/README.Bugs> for instructions.
Would there be some issue with the build which is causing the ICE for me? The
error message which you reported for gfortran 6.2.0 also doesn't make sense to
me, as I use defined-assignment to allocatable variables frequently in my code
without problem. Indeed, it is used a line or two earlier in the example I
provided.
