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Compilation Error: Procedure header must appear first and only once [message #76737]

Mon, 27 June 2011 13:38

Maegereg
Messages: 10
Registered: June 2011

Junior Member

I've been trying to get someone else's program written in IDL 6.4 to
compile in IDL 8.0. I don't have any previous experience with the
language, and my C/Python experience is proving a poor substitute to
expert knowledge. I'm running into the most curious compiler error in
two of my files. I can't put the full code up here (to begin, between
the two there are probably 3000 lines), but I'll try to describe
things as best I can. It's fairly simple: in both of the files, all
the procedures and functions defined past a certain point produce the
following error on compilation:
"% Procedure header must appear first and only once: ANALYZE _ROI_DATA
At:..." (for example). Every function and procedure that's later in a
file than a function or procedure that's got that error gets it too.
And if you were wondering about functions getting an error about
procedures, the functions all also get "Return statement in procedures
can't have values." I've been able to fix it by rearranging the
functions/procedures in a file (worked on one of the two files,
haven't tried it on the other), but I understand there are good
reasons to leave the command procedures/functions at the end of the
file.

I've checked a number of possibilities: these aren't already defined
in the IDL libraries. I checked the procedures immediately before the
first erroneous procedure in both files, and all the begin statements
(and equivalents) seem to have corresponding end statements. The
program compiles fine in IDL 6.4 (I don't have a copy of 6.4, but I've
seen this program run, and have used it myself). I'm just about at the
end of things I can think of to try to fix this. Anyone have any
suggestions?

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[Message index]

		Compilation Error: Procedure header must appear first and only once By: Maegereg on Mon, 27 June 2011 13:38
		Re: Compilation Error: Procedure header must appear first and only once By: jaromrnelson on Mon, 20 June 2016 11:46
		Re: Compilation Error: Procedure header must appear first and only once By: Helder Marchetto on Thu, 30 March 2017 14:49
		Re: Compilation Error: Procedure header must appear first and only once By: Markus Schmassmann on Fri, 31 March 2017 06:22
		Re: Compilation Error: Procedure header must appear first and only once By: guillermo.castilla on Thu, 13 July 2017 14:55
		Re: Compilation Error: Procedure header must appear first and only once By: rbruntz on Fri, 14 July 2017 13:21

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