Hi Martin, this is a feature. If TFile::Open() returns 0 there was a failure. Note that a ctor always returns an object hence the need for a check like IzZombie(), but a static method like Open() already performs this check and returns 0. Cheers, Fons. On Mon, 2003-12-08 at 14:04, Martin Schulte-Wissermann wrote: > hi all, > just installed v3.10.01 and encountered a problem with : > > root [0] TFile* f = TFile::Open("nothere.root") > Error in <TFile::TFile>: file nothere.root does not exist > root [1] f > (class TFile*)0x0 <=====!! > > same behaviour in compiled code. > is this a feature? > i wonder, because it prohibits to call IsOpen() or IsZombie. > > ps: if i use f = new TFile(...) everything seems ok. > > cheers, > martin > > (v3.10.01, gcc2.9?) -- Org: CERN, European Laboratory for Particle Physics. Mail: 1211 Geneve 23, Switzerland E-Mail: Fons.Rademakers@cern.ch Phone: +41 22 7679248 WWW: http://www.rademakers.org/fons/ Fax: +41 22 7679480
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