[PATCH] D56000: [compiler-rt] [xray] Disable alignas() for thread_local objects on NetBSD

[Dean Michael Berris via Phabricator via cfe-commits]

dberris added inline comments.


================
Comment at: lib/xray/xray_defs.h:22
 
+#if !SANITIZER_NETBSD
+#define XRAY_TLS_ALIGNAS(x) alignas(x)
----------------
krytarowski wrote:
> I would switch the order, in order to remove unneeded negation.
> 
> ```
> #if SANITIZER_NETBSD
> ...
> #else
> ...
> #endif
> ```
> 
> `#define XRAY_HAS_TLS_ALIGNAS 0` is not needed as `#if XRAY_HAS_TLS_ALIGNAS` will evaluate to false anyway and `#define XRAY_HAS_TLS_ALIGNAS 1` is equivalent to `#define XRAY_HAS_TLS_ALIGNAS`. But it's just a matter of style.
FWIW, I agree to this suggestion. I also prefer:

```
#if SANITIZER_NETBSD
...
#else
...
```

But I do like the explicit definition of `XRAY_HAS_TLS_ALIGNAS`.


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  https://reviews.llvm.org/D56000/new/

https://reviews.llvm.org/D56000