From:	"Andreas Bierhals" <bierhals AT studserv DOT stud DOT uni-hannover DOT de>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: VERY STRANGE PROBLEM...
Date:	19 Oct 1997 12:12:33 GMT
Organization:	RRZN - Newsserver
Lines:	66
Message-ID:	<01bcdc88$66652960$26b14b82@bierhals>
References:	<34481ACA DOT 7D513B88 AT nbnet DOT nb DOT ca>
NNTP-Posting-Host:	h38.stud.uni-hannover.de
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Hi Jason!

If I understood you well, you have (i) two classes, A and B,
and (ii) two files, a.hpp and a.cpp. 
The declaration of class A is in a.hpp, while its definition is
in a.cpp. However, the class B is declared AND defined in
a.cpp in order to be hidden. Furthermore you defined a static
instantiation of B in a.cpp with a fixed size-Argument for
the constructor.

I played around a little with this configuration and found
out that sometimes, the order of invoking the constructors
of A and B may be wrong (i.e. The constructor of A is invoked
BEFORE the one of class B).
I have attached to files, "test.h" and "test.cc" which illustrate
this problem. To compile them, type:

gcc -o test.exe test.cc

Before compiling, there are two comment lines in test.cc 
(line 26 and line 48)
which look like
"// ##########", and directly after them "// A testClass(...)".
One of the two instantiations of A must be activated before
compiling.

Invoking the two versions of test.exe (with the different positions of
the line "A testClass(...)" should illustrate the pitfall, that I
suppose to occur in your program.

                    Sincerely,

             Andreas Bierhals
begin 600 test.cc
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M8G5F*3L-"B @9F]R("AI/3 [(&D\;#L@*RMI*2!R6VE=(#T AT 8G5F6VPM:2TQ
M73L-"GT-"@T*+R\@(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C
M(R,C(R,C(R,C(R,C(R,C(R,C(R,C(PT*+R\@57-I;F<@=&AE(&9O;&QO=VEN
M9R!L:6YE(&AE<F4@=VEL;"!.3U0@=V]R:R$-"B!!('1E<W1#;&%S<R AT B<VQA
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M:6YT7V)U9BAV;VED*2![#0H@('!R:6YT9B AT B)7-<;B(L(&)U9F9E<BD[#0I]
M#0H-"@T*;6%I;B AT I('L-"B\O(",C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C
M(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,C(R,-"B\O(%5S:6YG('1H92!F
M;VQL;W=I;F<@;&EN92!H97)E(%=)3$P@=V]R:R$-"B\O($$@=&5S=$-L87-S
M*")S;&%H<F5I0B!S865R9&Y!(BD[#0H-"B @=&5S=$-L87-S+G!R:6YT7V)U
69B AT I DOT PT*("!R971U<FX@,#L-"GT-"@H-
`
end

begin 600 test.h
M(VEN8VQU9&4\<W1D:6\N:#X-"B-I;F-L=61E/'-T<FEN9RYH/@T*#0IC;&%S
M<R!!#0I[#0H@('!U8FQI8SH-"B @02AC:&%R("IC*3L-"B @=F]I9"!P<FEN
M=%]B=68H=F]I9"D[#0H-"B @<')O=&5C=&5D DOT  AT T*("!C:&%R("IB=69F97([
(#0I].PT*#0II
`
end

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