__comp_ctor and std::ofstream default constructor

[Brendon Costa <bcosta at avdat dot com dot au>]

Hi all,

I am having trouble with finding what method of a class that __comp_ctor 
() would call. I have been assuming that it will call the constructor 
method that has the same parameter list as the __comp_ctor () function 
but this does not seem to be working.

Particulary when compiling code that uses std::ofstream. At some point 
the std::basic_ofstream<char,std::char_traits<char> >::__comp_ctor () 
function is being called, and I am trying to find the FUNCTION_DECL node 
for the assocated std::basic_ofstream<char,std::char_traits<char> 
>::basic_ofstream () constructor method.

This seems to be a problem. I can see the method in the fstream source 
header file, but the FUNCTION_DECL node for the constructor has strange 
arguments which do not seem to be in the source file.

In particular calling: DECL_ARGUMENTS() on the function decl and 
iterating over its parameters i get the following parameters for what i 
think is the default constructor for the basic_ofstream class.

(I EXPECT THIS ARGUMENT AND NO OTHERS)
arg: 0
   name: this
   type: NULL

(I DONT EXPECT THE FOLLOWIN ARGS)
arg: 1
   name: __in_chrg
   type: int

arg: 2
   name: __vtt_parm
   type: NULL


So somehow the code:
basic_ofstream::basic_ofstream()

is producing a FUNCTION_DECL with args that suggest it is declared:
basic_ofstream::basic_ofstream(int __in_chrg, void* __vtt_parm)

Can someone please help me understand why this happens?

Also when given a FUNCTION_DECL node for a __comp_ctor () function of a 
class, how I can find the FUNCTION_DECL node that would be called by it 
in order to perform the initialisation of the class data?

Thanks,
Brendon.