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NFormat and crash of the program [message #6868]

Fri, 01 December 2006 22:38

forlano
Messages: 1239
Registered: March 2006
Location: Italy

Senior Contributor

Hello,

my app crashes with the following box message in debug:

-----------------------------------------------------------
Assertion failed in c:\upp\uppsrc\Core\Format.cpp line 979
0
-----------------------------------------------------------

at the line:

  name = NFormat("%sscrgrp.html", TD.PATHDIRWWW);

Instead it does not crash if I use:

  name = TD.PATHDIRWWW + "scrgrp.html";

Who can explain me why? (I suspect the two "s" produce some troubble)

Luigi

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Re: NFormat and crash of the program [message #6869 is a reply to message #6868]

Fri, 01 December 2006 22:50

mirek
Messages: 14291
Registered: November 2005

Ultimate Member

Unfortunately, while Format (NFormat is identical to Format for more than year now) maintains similarity to "printf" formating, there is a catch - in order to allow extending Format, the format is specified by ALL alpha characters after the % - so in this case, it is "%sscrgrp". You can delimit it using '`':

"%s`scrgrp.html"

BTW, it release mode, it would most likely worked as expected - if type is not found, Format starts trimming the identifier performing more searches until it founds %s (but of course, this is just to prevent unexpected surprises in legacy code).

Mirek

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