MantisBT - ITK
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ID	Project	Category	View Status	Date Submitted	Last Update
0003610	ITK		public	2006-08-15 01:51	2010-10-26 15:07

Reporter	Christoph Palm
Assigned To	kentwilliams
Priority	high	Severity	major	Reproducibility	always
Status	closed	Resolution	open
Platform		OS		OS Version
Product Version
Target Version		Fixed in Version
Resolution Date
Sprint
Sprint Status	backlog

Summary	0003610: casting problem (run-time vs. compile-time)
Description	in itkCannyLevelsetFunction.txx: // Only cast if we need to if ( typeid(TImageType) == typeid(TFeatureImageType)) { m_Canny->SetInput(tempFeature); } else { m_Caster->SetInput(tempFeature); m_Canny->SetInput(m_Caster->GetOutput()); } Cannot be compiled with TImageType != TFeatureImageType, because the compiler stops with an error message like "casting not possible" in m_Canny->SetInput(tempFeature); Obviously, at run-time there is no problem because of the if-statement, but at compile-time, the compiler does not know, that this casting problem never will occure. Luis Ibanez proposed the following solution: "We should add a MetaProgramming boolean check here in order to make those lines conditional. That is, we should replace the "if" statement with a Template expression that is equivalent to a boolean check."
Steps To Reproduce
Additional Information	Gerrit topic http://review.source.kitware.com/#change,240 [^] implements solution.
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Issue History
Date Modified	Username	Field	Change
2010-10-21 12:17	Hans Johnson	Assigned To	Lydia Ng => Luis Ibanez
2010-10-21 12:17	Hans Johnson	Note Added: 0022591
2010-10-21 12:18	Hans Johnson	Assigned To	Luis Ibanez => kentwilliams
2010-10-21 12:19	Hans Johnson	Note Added: 0022592
2010-10-26 14:24	kentwilliams	Sprint Status	=> backlog
2010-10-26 14:24	kentwilliams	Description Updated
2010-10-26 14:24	kentwilliams	Additional Information Updated
2010-10-26 15:07	kentwilliams	Status	assigned => closed

Notes