problem compiling pdbg executable on cray with pathscale

[garold]

Dear cp2k users/developers,

Yesterday I obtained the 04feb09 cvs version of cp2k and compiled
without problems a popt executable using pathscale compiler on a cray
(hopper at nersc).  I first set up the environment using commands:

module swap PrgEnv-pgi PrgEnv-pathscale
export GOTO_NUM_THREADS=1
export FORT_C_NAME=pathscale

and then compiled with:

make ARCH=Linux-x86-64-pathscale VERSION=popt

Here is the arch file:

CC       = cc
CPP      = cpp
FC       = ftn -target=linux
LD       = ftn
AR       = ar -r
DFLAGS   = -D__XT3 -D__FFTSG\
           -D__parallel -D__BLACS -D__SCALAPACK
CPPFLAGS = -traditional -C $(DFLAGS) -P
FCFLAGS  = -O2
LDFLAGS  = $(FCFLAGS)

OBJECTS_ARCHITECTURE = machine_xt3.o

This produced a correct executable.

The problem occurred when I then tried to compile a corresponding pdbg
executable; using a very similar arch file; simply replacing

FCFLAGS  = -O2

with

FCFLAGS  = -O0 -ffortran-bounds-check -g

The compilation went fine for a while but then the compiler choked on
the module dbcsr_operations.F; here are the relevant lines:

cpp -traditional -C -D__XT3 -D__FFTSG -D__parallel -D__BLACS -
D__SCALAPACK -P -D__COMPILE_ARCH="\"Linux-x86-64-pathscale\"" -
D__COMPILE_DATE="\"Thu Feb  4 15:42:09 PST 2010\"" -
D__COMPILE_HOST="\"hopper03\"" -D__COMPILE_LASTCVS="\"D\"" -I/scratch/
scratchdirs/garold/cp2k_04feb10/makefiles/../src /scratch/scratchdirs/
garold/cp2k_04feb10/makefiles/../src/dbcsr_operations.F >
dbcsr_operations.f90
ftn -target=linux -c -O0 -ffortran-bounds-check -g
dbcsr_operations.f90
/opt/cray/xt-asyncpe/3.4/bin/ftn: INFO: linux target is being used
Signal: Segmentation fault in Front End Parse/Semantic phase.
Error: Signal Segmentation fault in phase Front End Parse/Semantic --
processing aborted
*** Internal stack backtrace:
pathf90-3.2 INTERNAL ERROR: /opt/pathscale/lib/3.2/mfef95 died due to
signal 4
make[1]: *** [dbcsr_operations.o] Error 1
make[1]: Leaving directory `/scratch/scratchdirs/garold/cp2k_04feb10/
obj/Linux-x86-64-pathscale/pdbg'
make: *** [build] Error 2

If I compile manually the post-processed (.f90) file in the obj
directory it does work, provided I remove the flag -ffortran-bounds-
check, i.e.:

ftn -target=linux -c -O0 -g dbcsr_operations.f90

Previous cp2k versions allowed this flag so is there something strange
in this module?  Or is there a problem with the compiler (pathscale
version 3.2)?

Thank you,
Garold