Thanks for taking a look at this!

I have two comments:
 1. If we’re doing the check at the end of both branches of the if, we might as 
well just move it to after.
 2. It doesn’t make sense to have a failure that only occurs in C mode in 
test/SemaCXX. Maybe just append it to the end of test/Sema/typo-correction.c.

> On Jul 27, 2016, at 5:36 PM, David Tarditi via cfe-commits 
> <cfe-commits@lists.llvm.org> wrote:
> 
> r272587 (http://reviews.llvm.org/D20490 <http://reviews.llvm.org/D20490>) 
> fixed an issue where typo correction could cause a crash when compiling C 
> programs.    The problem was that a typo expression could be inadvertently 
> processed twice.    r272587 fixed this for BinOp expressions.   Conditional 
> expressions can hit the same problem too.  This change adds the two line fix 
> for them, as well as a small test case illustrating the crash.   This is my 
> first time proposing a patch for clang.  I don’t have commit privileges, so 
> if someone could review/commit this for me, I’d appreciate it.   If 
> Phrabicator is the preferred way or there’s another preferred process for 
> submitting patches, let me know.

Yes, Phabricator is the preferred method of getting a patch reviewed! Please 
submit any future patches there.

>  I see from the prior review that the consensus was that “typo correction is 
> in a messy state, we should fix this”.     I agree.  There are other 
> problematic places in the code where double-processing might or might not 
> occur for C code.  An example is the processing of subscript expressions in 
> Parser::ParsePostfixExpressionSuffix.  Without clear invariants, it is hard 
> to know what to do.
>  
> Testing: clang fails on the test case without this change, passes with it.   
> The clang test suite results were otherwise the same before and after this 
> change.
>  
> Thanks,
> David
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