why indentation should be part of the syntax

Ned Batchelder ned at nedbatchelder.com
Sun Mar 2 13:36:31 CET 2014


On 3/2/14 5:41 AM, Stefan Behnel wrote:
> Haven't seen any mention of it on this list yet, but since it's such an
> obvious flaw in quite a number of programming languages, here's a good
> article on the recent security bug in iOS, which was due to accidentally
> duplicated code not actually being as indented as it looked:
>
> https://www.imperialviolet.org/2014/02/22/applebug.html
>
> Stefan
>

As much as I like indentation as syntax, and am amused by this bug, I'm 
not sure we can chalk it all up to space-vs-brace. After all, who would 
have wanted two goto's in a row even with braces?  It's not like there's 
some engineer at Apple who meant for the code to read like this:

     if ((err = SSLHashSHA1.update(&hashCtx, &signedParams)) != 0) {
         goto fail;
         goto fail;
     }

This looks to me like a poorly handled merge conflict maybe?  I wonder 
if we'll ever get the details.

-- 
Ned Batchelder, http://nedbatchelder.com




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