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Forums > Custom IC > Custom IC Electrical Design

Subject: "incompatible with data - nil" problem
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julian2007
Posts: 13
Online: User is Offline
12/19/2007 5:28 AM  
Hi, there:
   When I am running Spectre, I got "*Error* fprintf/sprintf: format spec. incompatible with data - nil"
   How can i get rid of it?

Thanks
adbeckett
Posts: 248
Online: User is Offline
12/19/2007 5:36 AM  
Unfortunately it could be virtually anything.

It essentially indicates an untrapped error condition - what's happening is that somewhere in the code it's doing something like:

printf("blah %s blah\n" myVar)

and myVar is nil rather than a string as expected. Since fprintf/printf/sprintf is used all over the place, it could happen any time a call to any of these functions happens with an argument that doesn't match the expected type - probably because something unexpected went wrong. This could be in some custom code or in the Cadence code - it could be anywhere.

To narrow it down a bit, perhaps you could enter in the CIW:

_stacktrace=20
tracelevel=20
tracelength=20

and then reproduce the problem - and post the lines around problem from your CDS.log file - including what you were doing at the time, and all the stacktrace, etc...

Probably best to deal with this through customer support really, but I can try to help you here too.

Regards,

Andrew.
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Forums > Custom IC > Custom IC Electrical Design > "incompatible with data - nil" problem


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