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URGENT!! bug with IfErrors, or i need to sleep. ;)

7 posts

psyke#

URGENT!! bug with IfErrors, or i need to sleep. ;)

OK, according to the docs for IfErrors:
Checks and clears the error flag
As far as I can tell, it does not clear the error flag. 🙁 Here's a small script that demonstrates this:
Name "iferrors bug?"
OutFile "iferrors.exe"
ShowInstDetails nevershow
AutoCloseWindow true
Section "one"
  ClearErrors
  ReadRegStr $1 HKCR "software\microsoft" shit
  IfErrors 0 NoError
    #ClearErrors    ;HAVE TO CLEAR ERROR FLAG, OTHERWISE IT PERSISTS!
    MessageBox MB_OK "could not read from HKCR\software\microsoft\shit"
    Goto ErrorYay
  NoError:
    MessageBox MB_OK "read '$1' from HKCR\software\microsoft\shit"
  ErrorYay:
SectionEnd
Section "two"
  IfErrors 0 NoError
    MessageBox MB_OK "error in section two!!"
    Goto ErrorYay
  NoError:
    MessageBox MB_OK "no errors in section two"
  ErrorYay:
SectionEnd
If ClearErrors is used to manually clear the error flag, that seems to work.

I hope I'm not just confused/hallucinating. 🙁

Somebody please confirm this is a bug or let me know where i've gone wrong. 🧟 i'm using the latest development snapshot.

thanks

Salaam/Peace
deguix#
I've tested this with a different script, but it gives the same result. 

ReadRegStr $1 HKCR "software\\microsoft" shit
IfErrors 0 Not
  IfErrors 0 Not
    MessageBox MB_OK "Error!"
Not:
Or Documentation Fix or Command Fix here.
psyke#
hi deguix,

thx for checking out my problem. 🙂

the script you posted shows the problem with greater clarity, thank you. 🙂

actually i started with a small script like yours, but then i was wondering if there was a scoping issue so that at least a different section would have a cleared error flag... i was quite surprised when i saw the error flag persisted across sections after using 'IfErrors'.

lol - i'm not sure how much sense that last paragraph made, but it makes sense to me. 😉

Salaam/Peace.
virtlink#
Well, I don't know if it's a bug in the Docs or in NSIS, but I can tell you, psyke, that you are NOT hallucinating, confused or tired. Be happy 😉!