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From: "rashmi" <rashmi.thoras@gmail.com>
Newsgroups: comp.lang.ada
Subject: GNAT-2005
Date: 9 Nov 2006 22:51:19 -0800
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Date: 2006-11-09T22:51:19-08:00
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Dear all,

I have a problem with trying to understand GNAT's working for the
following:
________________________________________________________________________________
package PKGE_NasRdFuns is
	function FUNC_ScBAVCk(RE_ScBA : in RE_SclrBA; RE_CtBA : in RE_CatgBA)
return TF_Done;
	function FUNC_ScBAFCk(RE_ScBA : in RE_SclrBA; RE_CtBA : in RE_CatgBA)
return TF_Done;
--	function FUNC_ScP4VCk(RE_ScP4 : in RE_SclrP4; RE_CtP4 : in
RE_CatgP4) return TF_Done;
--	function FUNC_ScP4FCk(RE_ScP4 : in RE_SclrP4; RE_CtP4 : in
RE_CatgP4) return TF_Done;
	function FUNC_BAFDIRd(IN_FL04,IN_FL05,IN_NDim : in Integer) return
RE_BAFDIm;
	function FUNC_BAVCPRd(IN_VC02,IN_VC03 : in Integer) return RE_BAVCPo;
	function FUNC_BAVPLRd(IN_VC04,IN_VC05 : in Integer) return RE_BAVPLn;
	function FUNC_BAVMBRd(IN_VM02,IN_VM03 : in Integer) return RE_BAVMBr;
	function FUNC_BAFPLRd(IN_FF03,IN_FF04 : in Integer) return RE_BAFPLn;
	function FUNC_BAFORRd(IN_FL02,IN_FL03 : in Integer) return RE_BAFORn;
end PKGE_NasRdFuns ;
_____________________________________________________________________________

1. Given above is an ada spec package (.ads) PKGE_NASRdFuns with
specifications for many functions such as FUNC_ScBAVCk, FUNC_ScBAFCk,
etc.
2. Parameters such as RE_ScBA are records defined in another package,
while IN_VC02, IN_VC03 etc. are scalars.
3. I find that if I delete the first few lines that give specs for
FUNC_ScBAVCK or FUNC_ScBAFCk, for which records are parameters, and
then compile the package's body (.adb), GNAT does not report that
functions are undefined. On the other hand, if I delete a specs line
such as that for FUNC_BAVCPRd for which scalars are parameters, GNAT
immediately reports "function FUNC_BAVCPRd undefined" when I compile
the body.

I want to understand why GNAT has such a strange response, that is, why
it does not report "function undefined" for the former case.

Thanks in advance.
Rashmi.