BUG: CodeView Breakpoints with Nested Quotes Unrecognized (86828)
The information in this article applies to:
- Microsoft CodeView for MS-DOS 4.0
- Microsoft CodeView for MS-DOS 4.01
- Microsoft CodeView for MS-DOS 4.05
- Microsoft CodeView for MS-DOS 4.1
- Microsoft CodeView for Windows 4.0
- Microsoft CodeView for Windows 4.01
- Microsoft CodeView for Windows 4.1
This article was previously published under Q86828 SYMPTOMS
In Microsoft CodeView, command window commands involving nested quotes
are not recognized correctly. A breakpoint that includes nested
quotation marks generates the following error:
CV1001 Error: Invalid Breakpoint Command
For example, the following command should create a breakpoint that
executes the function func_name when line 12 is reached:
bp.12,, "?func_name("string")"
Instead, this command generates a CV1001 error.
It is possible to enter this type of illegal breakpoint through the
breakpoint dialog box. This causes an error message when the
CURRENT.STS is read the next time CodeView is invoked.
CAUSE
CodeView incorrectly parses nested quotation marks both from the
command line and from the [debug-] section of the CURRENT.STS file
where breakpoints are saved between debugging sessions. This is a
limitation of CodeView's command syntax.
RESOLUTION
If you need to set this type of breakpoint, use this workaround. Add a
global character array, initialized to the string you want to call the function with, to the program. For example:
After recompiling the program, set the breakpoint using the variable
as the parameter instead of a literal string, as follows:
bp.12,, "?func_name(param)"
This avoids the nested quotations and results in a breakpoint that can
be saved between debugging sessions.
STATUS
Microsoft has confirmed this to be a problem in CodeView versions 3.0,
3.05, 3.06, 3.07, 3.11, 3.12, 3.14, 3.5, 4.0, 4.01, 4.05, 4.1 and 4.25. 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 kbBug kbDebug kberrmsg KB86828 |
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