r198858 - Disable LeakSanitizer in TableGen binaries, see PR18325

Alp Toker alp at nuanti.com
Thu Jan 9 03:15:35 PST 2014

On 09/01/2014 11:08, Chandler Carruth wrote:
> On Thu, Jan 9, 2014 at 6:02 AM, Alp Toker <alp at nuanti.com 
> <mailto:alp at nuanti.com>> wrote:
>     Hi Kostya,
>     This doesn't look correct and fires warnings my my strict checks
>     build.
> I'm pretty sure the change works correctly, and it was definitely what 
> Kostya and I intended.
>     Double-underscore prefixed identifiers are strictly reserved for
>     the implementation.
> Yes, and LeakSanitizer is something provided by the implementation? 
> (the toolchain's runtime libraries specifically) I don't see any 
> problem with double underscore here, any more than with __builtin_... 
> functions or any of the other sanitizer interfaces.

__builtin functions are introduced by the implementation (either the 
compiler or system header declarations) so there's no problem.

Sanitizer is a system library so it's free to use the identifiers it wants.

TableGen, on the other hand, is not a part of the implementation.

> Can you clarify exactly what the error is and why? It's possible we 
> could provide a macro of some kind in the sanitizer headers to bundle 
> this functionality up if we need some special marking of this for 
> checkers, but without more information its hard to hell what the 
> actual problem is.

These two commits _introduced_ names in the reserved namespace.

The checker I have is a strict warning flag I've been trying to encode 
the rules from the standard and in this case the diagnostic looks 


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