Problem with -pfa option in f77 compile command

[Guy Harris]

>Where can I find out what "signal 139" means?

"Memory fault - core dumped".

139 = 128+11.  11 means "memory fault" (11 is SIGSEGV, i.e. "memory
fault"); 128 means "core dumped".  Stu Feldman apparently thought it was
good for your health to be obliged to dive into WAIT(2) to figure out
what various error codes mean (presumably he wrote the original "f77"
driver program, and definitely wrote the original "make", which also
rudely reports signals numerically).  I think it's bad for your health,
which is why SunOS's "make" has, since 3.2 or so, reported those errors
more sanely.