Comments on: Unused results http://tecnocode.co.uk/2009/04/20/unused-results/ Ramblings on computers… Fri, 20 Jan 2012 21:19:46 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Matthew Barnes http://tecnocode.co.uk/2009/04/20/unused-results/comment-page-1/#comment-608 Matthew Barnes Wed, 22 Apr 2009 21:18:01 +0000 http://tecnocode.co.uk/?p=229#comment-608 Probably not widely used due to laziness and/or just not knowing about the feature. Please do add it. Probably not widely used due to laziness and/or just not knowing about the feature. Please do add it.

]]> By: Ka-Hing Cheung http://tecnocode.co.uk/2009/04/20/unused-results/comment-page-1/#comment-606 Ka-Hing Cheung Mon, 20 Apr 2009 23:04:04 +0000 http://tecnocode.co.uk/?p=229#comment-606 it's more commonly used to denote error checkings that must be done, I think the rationale is that if your function allocates something, then it probably doesn't make sense for the caller to ever to save the result, so this type of error is very rare. My coworker wrote a dehydra script to check that all functions that return an error code have that attribute set, a similar thing can probably be done to constructors. it's more commonly used to denote error checkings that must be done, I think the rationale is that if your function allocates something, then it probably doesn't make sense for the caller to ever to save the result, so this type of error is very rare.

My coworker wrote a dehydra script to check that all functions that return an error code have that attribute set, a similar thing can probably be done to constructors.

]]> By: Philip Withnall http://tecnocode.co.uk/2009/04/20/unused-results/comment-page-1/#comment-605 Philip Withnall Mon, 20 Apr 2009 21:40:57 +0000 http://tecnocode.co.uk/?p=229#comment-605 Mark: I've just checked, and I don't get warned about it if the attribute isn't there. What warning options are you using? Mark: I've just checked, and I don't get warned about it if the attribute isn't there. What warning options are you using?

]]> By: Johannes Berg http://tecnocode.co.uk/2009/04/20/unused-results/comment-page-1/#comment-604 Johannes Berg Mon, 20 Apr 2009 21:34:20 +0000 http://tecnocode.co.uk/?p=229#comment-604 The Linux kernel actually uses it that way, but we call it __must_check (IIRC). The Linux kernel actually uses it that way, but we call it __must_check (IIRC).

]]> By: Mark http://tecnocode.co.uk/2009/04/20/unused-results/comment-page-1/#comment-603 Mark Mon, 20 Apr 2009 21:20:03 +0000 http://tecnocode.co.uk/?p=229#comment-603 I can tell you why: because gcc already warns about that by default :) I can tell you why: because gcc already warns about that by default :)

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