Suppress clang warning for direct memory write in value_variant.h.

PiperOrigin-RevId: 781114095

Author: CEL Dev Team

common/values/value_variant.h

@@ -732,11 +732,14 @@ class alignas(kValueVariantAlign) CEL_COMMON_INTERNAL_VALUE_VARIANT_TRIVIAL_ABI
       const bool rhs_trivial =
           (rhs.flags_ & ValueFlags::kNonTrivial) == ValueFlags::kNone;
       if (lhs_trivial && rhs_trivial) {
+// We validated the instances can be copied byte-wise at runtime, but compilers
+// warn since this is not safe in the general case.
 #if defined(__GNUC__) && !defined(__clang__)
-// We validated the instances can be copied byte-wise at runtime, but GCC
-// warns since this is not safe in the general case.
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wclass-memaccess"
+#elif defined(__clang__)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wnontrivial-memcall"
 #endif
         alignas(ValueVariant) std::byte tmp[sizeof(ValueVariant)];
         // NOLINTNEXTLINE(bugprone-undefined-memory-manipulation)
@@ -748,6 +751,8 @@ class alignas(kValueVariantAlign) CEL_COMMON_INTERNAL_VALUE_VARIANT_TRIVIAL_ABI
         std::memcpy(std::addressof(rhs), tmp, sizeof(ValueVariant));
 #if defined(__GNUC__) && !defined(__clang__)
 #pragma GCC diagnostic pop
+#elif defined(__clang__)
+#pragma clang diagnostic pop
 #endif
       } else {
         SlowSwap(lhs, rhs, lhs_trivial, rhs_trivial);