• frame (8/8) Jan 06 2022 If a pointer has an invalid target a debugger in VS shows the
• Rainer Schuetze (3/13) Jan 15 2022 Are you looking for something like IsBadReadPtr? See
• frame (3/5) Jan 24 2022 Worth a try, thanks

frame <frame86 live.com> writes:

If a pointer has an invalid target a debugger in VS shows the 
error

`D0001: Error: Expression couldn't be evaluated`

when I try to access it.

Is there a debugger function to trigger this access which can be 
used inside an invariant?
I can assert it by checking if the pointer address is far to low, 
but this doesn't always work.

Rainer Schuetze <r.sagitario gmx.de> writes:

On 06/01/2022 19:04, frame wrote:
 If a pointer has an invalid target a debugger in VS shows the error
 
 `D0001: Error: Expression couldn't be evaluated`
 
 when I try to access it.
 
 Is there a debugger function to trigger this access which can be used 
 inside an invariant?
 I can assert it by checking if the pointer address is far to low, but 
 this doesn't always work.

Are you looking for something like IsBadReadPtr? See 
https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-isbadreadptr

frame <frame86 live.com> writes:

On Saturday, 15 January 2022 at 09:11:53 UTC, Rainer Schuetze 
wrote:

 Are you looking for something like IsBadReadPtr? See 
 https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-isbadreadptr

Worth a try, thanks