[Bug fortran/65469] New: ICE on bad code

["daniel.price at monash dot edu" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65469

            Bug ID: 65469
           Summary: ICE on bad code
           Product: gcc
           Version: 4.9.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: daniel.price at monash dot edu

Created attachment 35062
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35062&action=edit
code that produces the internal compiler error

Dear gfortran folks,

 Attached is a short test case of (wrong) code I happened to produce that
triggers an "internal compiler error" and a seg fault.

 I've got it down to just 9 lines of code. The code should obviously fail to
compile, but I thought you might like to fix the ICE and the seg fault... 

Daniel

Output as follows:

$ gfortran-mp-4.9 -o ice.o -c ice.f90
ice.f90:7.17:

 type(block_type) :: my_block
                 1
Error: Derived type 'block_type' at (1) is being used before it is defined
f951: internal compiler error: Segmentation fault: 11

f951: internal compiler error: Abort trap: 6
gfortran-mp-4.9: internal compiler error: Abort trap: 6 (program f951)
Abort trap: 6

-----
Version info (also fails with gfortran v4.8):
-----
$ gfortran-mp-4.9 -v
Using built-in specs.
COLLECT_GCC=gfortran-mp-4.9
COLLECT_LTO_WRAPPER=/opt/local/libexec/gcc/x86_64-apple-darwin14/4.9.2/lto-wrapper
Target: x86_64-apple-darwin14
Configured with:
/opt/local/var/macports/build/_opt_mports_dports_lang_gcc49/gcc49/work/gcc-4.9.2/configure
--prefix=/opt/local --build=x86_64-apple-darwin14
--enable-languages=c,c++,objc,obj-c++,lto,fortran,java
--libdir=/opt/local/lib/gcc49 --includedir=/opt/local/include/gcc49
--infodir=/opt/local/share/info --mandir=/opt/local/share/man
--datarootdir=/opt/local/share/gcc-4.9 --with-local-prefix=/opt/local
--with-system-zlib --disable-nls --program-suffix=-mp-4.9
--with-gxx-include-dir=/opt/local/include/gcc49/c++/ --with-gmp=/opt/local
--with-mpfr=/opt/local --with-mpc=/opt/local --with-isl=/opt/local
--disable-isl-version-check --with-cloog=/opt/local
--disable-cloog-version-check --enable-stage1-checking --disable-multilib
--enable-lto --enable-libstdcxx-time --with-as=/opt/local/bin/as
--with-ld=/opt/local/bin/ld --with-ar=/opt/local/bin/ar
--with-bugurl=https://trac.macports.org/newticket --with-pkgversion='MacPorts
gcc49 4.9.2_1'
Thread model: posix
gcc version 4.9.2 (MacPorts gcc49 4.9.2_1)