umrobbin@ccu.umanitoba.ca (03/22/91)
Okay, stupid question time:
If I run this program:
main(){
printf("Goodbye cruel world\n");
exit(-1);
}
funny things happen. Under amigados, the program runs once, and then the
disk spins again and gives a random AmigaDOS error. Under the CShell,
the program executes twice! Also, if the return value is -2 or -3,
the AmigaDOS CLI doesn't give any error (and runs once) but cshell still
executes it twice. And for any negative value, the cshell variable
_lasterr is always 20.
What's up?
The CLI is Amigados 1.3, and the cshell is "Shell V4.02A" by Dillon,
Drew, Borreo & Dieni.
Steve Z
.DXB132@psuvm.psu.edu (03/23/91)
In article <91081.211415UH2@psuvm.psu.edu>, Lee Sailer <UH2@psuvm.psu.edu> says: >for me, too. Specifically, it prints out "Goodbye, cruel world." >Then it says, Unable to load "cruel" I think negative return codes are basically reserved for cases where you want to tell the user that what he just tried to execute was not a real executable file. Examples are libraries and devices, which usually start with moveq #-1,d0 / rts in case the user tries to run them. This is an (unpublished) convention...different shells could handle return codes in totally different ways. (But let's hope not :-) -- Dan Babcock