Q131312: FIX: Manipulator Causes C1001 IC Error in MSC1.CPP Line 1056
Article: Q131312
Product(s): Microsoft C Compiler
Version(s): 2.0,2.1
Operating System(s):
Keyword(s): kbbuglist kbfixlist
Last Modified: 29-JUL-2001
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The information in this article applies to:
- Microsoft C/C++ Compiler (CL.EXE), included with:
- *EDITOR Please do not choose this product*Microsoft Visual C++ 32-bit Edition* use 241, 265, 225, versions 2.0, 2.1
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SYMPTOMS
========
The compiler generates the following compiler error:
fatal error C1001: INTERNAL COMPILER ERROR ( compiler file 'msc1.cpp', line
1056 )
This occurs when the code meets both of these conditions:
- It contains a function template that overwrites the << operator
(insertion operator) or the >> operator (extraction operator) for class
ostream. For example:
template <class T> ostream& operator<<( ostream&, T& ); //or
template <class T> istream& operator>>( istream&, T& );
- It contains an expression of the form:
iostream_specifier insertion/extraction_operator manipulator
For example:
cout << endl; // fails if template operator << was defined
cout << flush; // fails if template operator << was defined
cin >> ws; // fails if template operator >> was defined
RESOLUTION
==========
The problem does not occur if an identifier of any type is inserted into the
expression. For example, if 'a' is a variable (of any type):
cout << a << endl; // does not fail
cout << '\n' << flush; // does not fail
cin >> a >> ws; // does not fail
STATUS
======
Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article. This problem was fixed in Microsoft Visual C++,
32-bit Edition, version 4.0.
MORE INFORMATION
================
To demonstrate the workaround, change the lines marked "internal compiler error"
into comments.
Sample Code to Demonstrate Problem
----------------------------------
/* Compile options needed: none
*/
#include <iostream.h>
#include <strstrea.h>
template <class T> ostream& operator<< ( ostream&, T& );
template <class T> istream& operator>> ( istream&, T& );
void x(ostrstream &ot)
{
int a;
cout << endl; // internal compiler error
ot << flush; // internal compiler error
cin >> ws; // internal compiler error
cout << "test" << endl; // no error
ot << '\n' << flush; // no error
cin >> a >> ws; // no error
}
Additional query words: 9.00 9.0 2.00 2.10 9.10 9.1
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Keywords : kbbuglist kbfixlist
Technology : kbVCsearch kbAudDeveloper kbCVCComp
Version : :2.0,2.1
Issue type : kbbug
Solution Type : kbfix
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