PGI User Forum

[YangYT]

I have encountered a strange problem.I compiled a Fortran source file to executable,it have only reported two warnings and generated the executable well,but after I ran it,it quited soon and gave me no response.Then I added a 'print' statement at the beginning of the soucefile and recompile it,but it did the same.
Who could give me a hand?
I was working on RedHat Linux 9,with PGI workstation 5.2 - PGF77,it is a
trial version

the following is information outputed in the process of debugging the program using pgdbg:
It poped up a dialog with the message "Signalled SIGSEGV at 0x40000be0,function _start,file<stdin>",and messages like "pgserv 4301: read: unable to read address 0x40000fc4" appeared in the terminal titled "PGDBG Program I/O"

The problem is still unsolved

[uncle_tom]

Hi,

sorry if this is a stupid suggestion:

is it possible that your program is simply waiting for a <RETURN>?

We used the trial version some time ago, and I think one restriction was that executables need a <RETURN> to start.

(Which is o.k., of course... ;-) )

If you already tried this: sorry again!

Thomas

[YangYT]

Thanks for your suggestion all the same!

My case may not be the same as your.
I forgot to give other details.After I have run my program ,it quited soon and act as it have done nothing.Even it can't access the first executable
statements in the source file(i.e the 'print' statement I added).

Thanks again!

[mkcolg]

Very odd. It appears to be seg faulting in the program start-up routine. "_start" is coming from the file "/usr/lib/crt1.o" which is a system provided object.

Questions:
Have you modifed your system from the default installation, i.e upgraded the kernel or gcc version?
What are the warning messages your seeing?
What optimization are you using to compile?
Can you successfully run a hello world program?

hello.f:

[uncle_tom]