When gfortran compiles a module on OSX which declares defined size arrays the
resulting module object file contains the array's allocated memory making the
files potentially enourmous. e.g.
module test_module
real, dimension(10000000) :: a
end module test_module
gfortran -c test_module.f90
If the array size is 10000000 then the size of test_module.o is 40000356 bytes.
This doesn't happen with the other fortran compilers I use, nor with gfortran
on linux.
akt% uname -a
Darwin m21.cpom.ucl.ac.uk 8.10.0 Darwin Kernel Version 8.10.0: Wed May 23
16:50:59 PDT 2007; root:xnu-792.21.3~1/RELEASE_PPC Power Macintosh powerpc
akt% /opt/local/bin/gfortran -v
Using built-in specs.
Target: powerpc-apple-darwin8.10.0
Configured with: ../gcc-4.2.1/configure --prefix=/opt/local
--enable-languages=c,c++,java,objc,obj-c++,fortran
--libdir=/opt/local/lib/gcc42 --includedir=/opt/local/include/gcc42
--infodir=/opt/local/share/info --mandir=/opt/local/share/man
--with-local-prefix=/opt/local --with-system-zlib --disable-nls
--disable-multilib --program-suffix=-mp-4.2
--with-gxx-include-dir=/opt/local/include/gcc42/c++/ --with-gmp=/opt/local
--with-mpfr=/opt/local
Thread model: posix
gcc version 4.2.1
--
Summary: Large module object files when declare arrays on Mac OSX
Product: gcc
Version: 4.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: akt at cpom dot ucl dot ac dot uk
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33120
