Modernize viewer alignment macros to use alignas and fix misaligned class issues reported by ubsan/asan

Signed-off-by: Rye <rye@alchemyviewer.org>

1 files changed, 3 insertions, 4 deletions

diff --git a/indra/llmath/llplane.h b/indra/llmath/llplane.h
index 832004bb64..822e6a7b6f 100644
--- a/indra/llmath/llplane.h
+++ b/indra/llmath/llplane.h
@@ -36,10 +36,9 @@
 // The plane normal = [A, B, C]
 // The closest approach = D / sqrt(A*A + B*B + C*C)
 
-
-LL_ALIGN_PREFIX(16)
-class LLPlane
+class alignas(16) LLPlane
 {
+    LL_ALIGN_NEW
 public:
 
     // Constructors
@@ -102,7 +101,7 @@ public:
 
 private:
     LLVector4a mV;
-} LL_ALIGN_POSTFIX(16);
+};
 
 static_assert(std::is_trivial<LLPlane>::value, "LLPlane must be a trivial type");