CodeView Does Not Use Default Arguments for Functions

 Last reviewed: May 1, 1996
Article ID: Q85510
The information in this article applies to:
  • Microsoft CodeView for MS-DOS, versions 4.0, 4.01, 4.05, and 4.1
  • Microsoft CodeView for Windows, versions 4.0, 4.01, 4.1
  • Microsoft CodeView for Win32s, version 4.25

SUMMARY

Microsoft CodeView versions 4.0 and later, which support debugging C++ programs, do not correctly evaluate functions that use default arguments. When an expression is used that requires CodeView to evaluate a function with a default argument, the following error message is displayed: 

   CXX0047: Error: argument list does not match a function

MORE INFORMATION

The sample code below contains a function that has a default argument. In the program, the function PrintOut() can be called either with a 

void parameter list or with a character pointer. When the following
command is executed from CodeView's command window 

   ? PrintOut("This is a string constant")
the function is called and "This is a string constant" is printed to the output screen. When the function PrintOut() is called with no parameters, for example 

   ? PrintOut()
the error CXX0047 is generated. This occurs only when using the "?" command in CodeView to force a function to be evaluated.

Default arguments are supported only in C++ programs.

Sample Code

/* Compile options needed: /Od /Zi
*/

#include <iostream.h>

void PrintOut (char *String = "This is a default argument.");

void main (void)
{ 
   PrintOut();
   PrintOut( "This is not a default argument.");
} 

void PrintOut (char *String)
{ 
   cout << String << endl;
}

Additional reference words: kbinf 4.00 4.10
KBCategory: kbtool kbcode kberrmsg
KBSubcategory: CvwIss

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Last reviewed: May 1, 1996
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