Re: Fortran senmentation fault

[Tobias Burnus <burnus at net-b dot de>]

On 05/02/2012 10:53 AM, vikram_sp wrote:
> I am trying to port fortran on arm. But the executables generated
> by the cross compiler is giving segmentation fault on the board.

As preremark, I know that gfortran works with RTEMS and VxWorks and on 
Android (ARM) smart phones. Thus, it shouldn't be very difficult to get 
it running on your system. (Fingers crossed.)

> I want to know what special is needs to be initialized in fortran
> program, i mean starup files. And what is to be done for safe termination.

Startup (GCC 4.5 and later): gfortran uses the normal GCC startup, which 
calls main(). If the (main) PROGRAM is written in Fortran, the generated 
main function calls some library initialization functions, cf. 
http://gcc.gnu.org/onlinedocs/gfortran/Non_002dFortran-Main-Program.html

Additionally, the __attribute__((constructor)) is used for some 
initialization in the run-time library and for coarrays (only with 
--fcoarray=lib). Similary for the __attribute__((destructor)). See 
libgfortran/runtime/main.c, libgfortran/intrinsics/{rand,random}.c

For the library, the only more important actions are: Searching for 
addr2line for backtracing and closing still open files when the program 
terminates.

I hope that helps. Good luck!

Tobias