dolfin team mailing list archive

[Niclas Jansson <njansson@xxxxxxxxxx>]

Anders Logg <logg@xxxxxxxxx> writes:

> On Wed, Feb 10, 2010 at 09:31:06AM +0000, Garth N. Wells wrote:
>> I get occasionally get a CGAL error when running DOLFIN:
>>
>> terminate called after throwing an instance of 'CGAL::Assertion_exception'
>>   what():  CGAL ERROR: assertion violation!
>> Expr: -CGAL_IA_MUL(-1.1, 10.1) != CGAL_IA_MUL(1.1, 10.1)
>> File: /home/garth/local/include/CGAL/Interval_nt.h
>> Line: 158
>> Explanation: Wrong rounding: did you forget the -frounding-math option
>> if you use GCC?
>> ==10917==
>>
>> It typically arises when trying to run inside a debugger, etc. Has
>> anyone else seen this? I do compile with '-frounding-math'.
>>
>> Garth
>
> Yes, I've seen this too when trying to debug some code. It's quite
> annoying. It's somewhat similar to PETSc in that CGAL seems to go in
> and catch errors and prevent debugging. I don't know what to do about
> it.
>
> --
> Anders


You can disable these checks by recompiling CGAL,
http://www.cgal.org/Manual/3.3/doc_html/Developers_manual/Developers_manual/Chapter_checks.html#Section_5.2

As for PETSc, the command line argument '-no_signal_handler' removes
most of the annoying stuff.

Niclas

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