Native Run-Time Checks Customization
When you compile with /RTC (run-time checks) or use the runtime_checks
pragma, the C run-time library provides native run-time checks. In some cases, you might want to customize run-time checking:
To route run-time check messages to a file or destination other than the default.
To specify an output destination for run-time check messages under a third-party debugger.
To report run-time check messages from a program compiled with a release version of the C run-time library. Release versions of the library do not use
_CrtDbgReportW
to report run-time errors. Instead, they display an Assert dialog box for each run-time error.To customize run-time error checking, you can:
Write a run-time error reporting function. For more information, see How to: Write a Run-Time Error Reporting Function.
Customize the error message destination.
Query for information about run-time check errors.
Customize the Error Message Destination
If you use _CrtDbgReportW
to report errors, you can use _CrtSetReportMode
to specify the destination of error messages.
If you use a custom reporting function, use _RTC_SetErrorType
to associate an error with a report type.
Query for Information About Run-Time Checks
_RTC_NumErrors
returns the number of error types detected by run-time error checks. To get a brief description of each error, you can loop from 0 to the return value of _RTC_NumErrors
, passing the iteration value to _RTC_GetErrDesc
on each loop. For more information, see _RTC_NumErrors and _RTC_GetErrDesc.
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