My program works right when compile with -g, but it works wrong without -g. The error output is "forrtl: sever (174) : SIGSEGV, segmenttation fault occurred". How can I go on to resolve this error? Any help will be appreciated.
You should be able to get a traceback via the -traceback option. That will indicate at least where this occurred. Possibilities that come to mind: uninitialised variables or wrong argument lists. Debug versions tend to be rather tolerant to such things in my experience.
The program works fine with "-g" or "-g -traceback". I think there are uninitialised variables or wrong argument, too. The project is too big to hard to review every code.
