[MITgcm-devel] character array assignment, g77

[Martin Losch]

Hi there,

I have this problem: with g77 on my AppleBookPro, I am getting an internal error when compiling routines like ctrl_init.F, the reason is this line
ncvargrd(ivar)= '?'
If I replace it with
ncvargrd(ivar)(:)= '?'
the compilation works. This
ncvargrd(ivar)(1:1)= '?'
does not work, the same is true for similar expressions in:
ctrl_init.F, ctrl_init_ctrlvar.F, ctrl_init_wet.F, grdchk_get_position.F, grdchk_init.F, grdchk_loc.F

This routine has a similar expression for ncvargrd, but it works (can be compiled by g77):
ctrl_pack.F
Further I cannot reproduce this problem with a simple test program. What should I do, ignore this problem, because it is only related to g77 (more recent gfortran seems to work)? Or use the fix, which is dangerous as soon as ncvargrd will be longer than (1)?

Martin

> g77 -v
> Reading specs from /usr/local/lib/gcc/i686-apple-darwin8.8.1/3.4.0/specs
> Configured with: ../gcc-3.4.0/configure --enable-languages=f77
> Thread model: posix
> gcc version 3.4.0

> gfortran -v
> Using built-in specs.
> Target: i686-apple-darwin9
> Configured with: ../gcc-4.3.1/configure --prefix=/sw --prefix=/sw/lib/gcc4.3 --mandir=/sw/share/man --infodir=/sw/share/info --enable-languages=c,c++,fortran,objc,java --with-arch=nocona --with-tune=generic --build=i686-apple-darwin9 --with-gmp=/sw --with-libiconv-prefix=/sw --with-system-zlib --x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib --disable-libjava-multilib
> Thread model: posix
> gcc version 4.3.1 (GCC)