C++ constructors called as args

[Michael Hunley <mhunley at pocketpurchase dot com>]

I will post this to the news groups as well, if this is not the correct 
place to ask this question my humble apologies.

I am working under RedHat Linux 8.0 which reports I am using GCC 3.2-7 
(which does not seem to match the GNU gcc versioning, but...).  I have 
3.2.2, but have not deployed yet.

I am brand new to linux and gcc and am trying to port an app from Windows 
written in C++ using MSVC 6.

I have some simple class combinations that effectively look like:

class A;        // forward decl

class B {
        B( const A& a );
        B( const B& b );
};

class C {
        void F1( A a ) { F2(a); }
        void F2( B b );
};

I get several errors from the above situation, apparently because g++ does 
not like calling the constructor to create a temp B from an A.  One of the 
messages is that it did do it, but the code does not compile.  The only fix 
I can find is to change F1 to look like:
        void F1( A a ) { B b(a); F2(b); }
Which would seem like what the compiler ought to do automatically 
anyway.  Instead I get a main error that:
        Cannot find B::B(B)

I have searched the docs and the news groups and can't seem to find any 
docage on this.  Is there a compile switch I need to get the auto creation 
of the temp?  Is there another work around besides changing all the code 
that does that sort of thing to create my own temp explicitly?  BTW: this 
code compiles fine under MSVC 6 and Kylix 3.

thanks in advance.

Michael Hunley
Senior Engineer
PocketPurchase, Inc.