Created attachment 34565 [details]
Taken from the NAS3.3-CAF benchmark provided by the HPCTools group at UH.

Dear all,

the attached code generates the following ICE:

$ gfortran -fcoarray=lib -c cg.f
f951: internal compiler error: Segmentation fault
0xb6c6ff crash_signal
	../../gcc/toplev.c:383
0x5ea56c gfc_zero_size_array
	../../gcc/fortran/arith.c:1637
0x5ea56c reduce_binary0
	../../gcc/fortran/arith.c:1651
0x5eb460 eval_intrinsic_f3
	../../gcc/fortran/arith.c:1700
0x622e63 check_dummy_characteristics
	../../gcc/fortran/interface.c:1212
0x622807 check_dummy_characteristics
	../../gcc/fortran/interface.c:1058
0x622807 gfc_compare_interfaces(gfc_symbol*, gfc_symbol*, char const*, int, int, char*, int, char const*, char const*)
	../../gcc/fortran/interface.c:1511
0x67d5ad resolve_global_procedure
	../../gcc/fortran/resolve.c:2456
0x67d8b7 resolve_call
	../../gcc/fortran/resolve.c:3394
0x67af88 gfc_resolve_code(gfc_code*, gfc_namespace*)
	../../gcc/fortran/resolve.c:10190
0x67d182 resolve_codes
	../../gcc/fortran/resolve.c:14974
0x67d262 gfc_resolve
	../../gcc/fortran/resolve.c:15002
0x668f7a resolve_all_program_units
	../../gcc/fortran/parse.c:5280
0x668f7a gfc_parse_file()
	../../gcc/fortran/parse.c:5523
0x6a8ad5 gfc_be_parse_file
	../../gcc/fortran/f95-lang.c:228
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.

--------------------------------------------------------------

My current configuration:

Using built-in specs.
COLLECT_GCC=gfortran
COLLECT_LTO_WRAPPER=/home/alex/Downloads/gcc/libexec/gcc/x86_64-unknown-linux-gnu/5.0.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../configure --prefix=/home/alex/gcc --enable-languages=c,c++,fortran --disable-multilib --disable-libgcj --disable-bootstrap
Thread model: posix
gcc version 5.0.0 20150124 (experimental) (GCC) 

Thanks