Article: Q168404
Product(s): Microsoft C Compiler
Version(s): 5.0
Operating System(s):
Keyword(s): kbCompiler kbCPPonly kbVC kbVC500bug kbVC600fix
Last Modified: 17-JUL-2001
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The information in this article applies to:
- Microsoft Visual C++, 32-bit Enterprise Edition, version 5.0
- Microsoft Visual C++, 32-bit Professional Edition, version 5.0
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SYMPTOMS
========
Instantiating an STL list container with a sequence [first, last), where first
and last are iterators, causes the compiler error C2664:
'function': cannot convert parameter number from 'type1' to 'type2'
CAUSE
=====
Using the list(const_iterator first, const_iterator last, const A& a1= A())
constructor causes the compiler error C2664. The constructor for list takes a
list<T>::const_iterator instead of a generic iterator for the first two
parameters.
RESOLUTION
==========
Workaround 1
------------
Use the default constructor. Insert elements in the list using the push_back
member function.
Workaround 2
------------
Use the list(size_type, const T& v = T(), const A& a1 = A()) constructor.
Insert elements in the list using the copy algorithm.
STATUS
======
Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article. This problem was corrected in Microsoft Visual C++,
version 6.0.
MORE INFORMATION
================
The following sample demonstrates the problem:
//test1.cpp
//Compiler options needed: /GX
#include <list>
int main()
{
int INTARRAY[4] = {1, 2, 3, 4} ;
std::list<int> INTLIST(INTARRAY, INTARRAY + 4) ; //C2664 here
}
The exact error message for the above sample is:
test1.cpp(9) : error C2664: 'std::list<int,class
std::allocator<int>>::list<int,class std::allocator<int>>(unsigned
int,const int &,const class std::allocator<int> &)' : cannot convert
parameter 1 from 'int [4]' to 'unsigned int'
The following sample demonstrates Workaround 1:
//test2.cpp
//Compiler options needed: /GX
#include <list>
int main()
{
int INTARRAY[4] = {1, 2, 3, 4} ;
std::list<int> INTLIST ;
for(int i = 0; i < 4; i++)
INTLIST.push_back(INTARRAY[i]) ;
return 0 ;
}
The following sample demonstrates Workaround 2:
//test3.cpp
//Compiler options needed: /GX
#include <list>
#include <algorithm>
int main()
{
int INTARRAY[4] = {1, 2, 3, 4} ;
std::list<int> INTLIST(4) ;
std::copy(INTARRAY, INTARRAY + 4, INTLIST.begin()) ;
return 0 ;
}
Additional query words: list copy push_back
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Keywords : kbCompiler kbCPPonly kbVC kbVC500bug kbVC600fix
Technology : kbVCsearch kbAudDeveloper kbVC500 kbVC32bitSearch kbVC500Search
Version : 5.0
Issue type : kbprb
Solution Type : kbfix
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