forward cleanup

open-telemetry · Nov 22, 2024 · e957bde · e957bde
1 parent 9ac2c7e
commit e957bde
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/api/include/opentelemetry/nostd/variant.h b/api/include/opentelemetry/nostd/variant.h
@@ -55,6 +55,18 @@ OPENTELEMETRY_END_NAMESPACE
 #    include "absl/types/variant.h"
 #  else
 #    include "opentelemetry/nostd/internal/absl/base/options.h"
+
+namespace absl
+{
+namespace OTABSL_OPTION_NAMESPACE_NAME
+{
+template <class T>
+struct variant_size;
+template <typename... Ts>
+class variant;
+}  // namespace OTABSL_OPTION_NAMESPACE_NAME
+}  // namespace absl
+
 #    include "opentelemetry/nostd/internal/absl/types/variant.h"
 #  endif