BUG: Cannot Watch Undimensioned Array (93162)
The information in this article applies to:
- Microsoft CodeView for MS-DOS 4.0
- Microsoft CodeView for MS-DOS 4.01
- Microsoft CodeView for Windows 4.1
This article was previously published under Q93162 SYMPTOMS
The versions of CodeView listed above do not properly display undimensioned
arrays in C++ code, such as the argv formal parameter to the main()
function. The array value does not appear in the locals window, if it is a
local variable or function parameter. An attempt to place a quick watch on
the array yields an error dialog box. A watch on the array yields a random
integer value. In the Visual Workbench, and CVW, watching the first array
element (array[0]) causes this error to appear in the watch window:
CXX0030: Error: expression cannot be evaluated
In the locals window, the array will be displayed as:
[BP+0008] char * array[?] = 0xnnnn:0xnnnn
Since the + symbol is not placed before "char", the pointer cannot be
expanded.
RESOLUTION
Modify the code to declare the array as a pointer to a pointer. For
example, change
void main (int argc, char *argv[])
to the following equivalent definition:
void main (int argc, char **argv)
STATUS
Microsoft has confirmed this to be a problem in CodeView versions 4.0 and
4.01 for MS-DOS, and version 4.10 for Windows. We are researching this
problem and will post new information here in the Microsoft Knowledge Base
as it becomes available.
| Modification Type: | Major | Last Reviewed: | 10/23/2003 |
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| Keywords: | kb16bitonly KB93162 |
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