Article View: comp.std.c
Article #1513What about errno==0 ?
From: Bjoern Kriews
Date: Sun, 15 Jul 1990 04:47
Date: Sun, 15 Jul 1990 04:47
17 lines
964 bytes
964 bytes
Hi ! I am want to let my code now whether a routine returning NULL on failure failed because of an I/O Error are for a logical mistake. For example, I'm setting a global variable = errno after a failed malloc(), then do an fclose() and return. I want to set this global to zero if the code failed because of any error not setting errno. My question is: What does the standard say about the value 0 for errno ? Can I assume that there is no errno.h defining any errorcode = 0 ? Any help appreciated, Bjoern -- bkr@mcshh.hanse.de - Bjoern Kriews / Stormsweg 6 / 2000 Hamburg 76 / W-Germany
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arc1-ca.pugleaf.net!utzoo!attcan!uunet!wuarchive!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!ira.uka.de!smurf!gopnbg!mcshh!bkrShow Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!wuarchive!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!ira.uka.de!smurf!gopnbg!mcshh!bkr From: bkr@mcshh.hanse.de (Bjoern Kriews) Newsgroups: comp.std.c Subject: What about errno==0 ? Keywords: errno, errorcheck, standard Message-ID: <7798@mcshh.hanse.de> Date: 15 Jul 90 04:47:36 GMT Distribution: comp Lines: 17