Article: Q123811
Product(s): Microsoft C Compiler
Version(s):
Operating System(s):
Keyword(s): kbCompiler kbCPPonly kbVCkbbuglist kbfixlist
Last Modified: 30-JUL-2001
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The information in this article applies to:
-
- Microsoft C/C++ Compiler (CL.EXE)
- Microsoft C/C++ for MS-DOS, version 7.0
- Microsoft Visual C++, versions 1.0, 1.5, 1.51
- *EDITOR Please do not choose this product*Microsoft Visual C++ 32-bit Edition* use 241, 265, 225, version 1.0
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SYMPTOMS
========
If a constant expression that evaluates to zero is used to allocate an array,
the following error occurs:
error C2466: cannot allocate an array of constant size 0
RESOLUTION
==========
To work around the problem, use a variable that is initialized to zero in place
of the constant when allocating the array.
STATUS
======
Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article. This bug was corrected in Visual C++, 32-bit Edition,
version 2.0.
MORE INFORMATION
================
The operator new() can be called with the argument zero. A distinct (non- null)
pointer to an object will be returned (see Section 5.3.3 of the ARM - M.A.Ellis,
B.Stroustrup). This is the behavior observed with Visual C++ version 2.0.
The following sample code can be used to demonstrate the problem.
Sample Code to Reproduce Problem
--------------------------------
/* Compile options needed: none
*/
char * p = new char[0]; // Causes C2466
Additional query words: 1.00 1.50 7.00 8.00 8.00c
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Keywords : kbCompiler kbCPPonly kbVC kbbuglist kbfixlist
Issue type : kbbug
Solution Type : kbfix
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