Re: Any way to get a warning if a non-boolean type is used in an if expression?
Re: Any way to get a warning if a non-boolean type is used in an if expression?
- Subject: Re: Any way to get a warning if a non-boolean type is used in an if expression?
- From: Jeffrey Walton <email@hidden>
- Date: Fri, 18 Oct 2013 05:40:36 -0400
On Fri, Oct 18, 2013 at 3:29 AM, Rick Mann <email@hidden> wrote:
>
> On Oct 17, 2013, at 17:28 , Thomas Wetmore <email@hidden> wrote:
>
>> As a long time Bell Labs engineer and a C purist, allow me to quote from the C specification from the K&R bible:
>
> Those of you quoting the language spec are missing my intent/need. While I consider this a shortcoming of the language, I realize this is how the language is. This is why I'm looking for a warning, not an error.
> ...
> I'm asking for a modern compiler that can do a lot of semantic analysis to give me the option of warning me when I'm doing something that's very easy to do accidentally in Objective-C.
Microsoft compiler have the warning (see, for example,
http://msdn.microsoft.com/en-us/library/b6801kcy.aspx). The last time
I checked, GCC and Clang do not.
Also see "More 'bool' weirdness",
http://lists.apple.com/archives/xcode-users/2013/Jun/msg00095.html
Jeff
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