From 75f7a26fc6a91a9a31eca505612f7184a24b88aa Mon Sep 17 00:00:00 2001
From: owentou <owentou@tencent.com>
Date: Sat, 23 Oct 2021 22:20:14 +0800
Subject: [PATCH 1/2] Fix #1028

Signed-off-by: owentou <owentou@tencent.com>
---
 .../opentelemetry/sdk/metrics/sync_instruments.h       | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/sdk/include/opentelemetry/sdk/metrics/sync_instruments.h b/sdk/include/opentelemetry/sdk/metrics/sync_instruments.h
index e97c09aa5e..0c1bd1a245 100644
--- a/sdk/include/opentelemetry/sdk/metrics/sync_instruments.h
+++ b/sdk/include/opentelemetry/sdk/metrics/sync_instruments.h
@@ -189,12 +189,12 @@ class BoundUpDownCounter final : public BoundSynchronousInstrument<T>,
 {
 
 public:
-  BoundUpDownCounter<T>() = default;
+  BoundUpDownCounter() = default;
 
-  BoundUpDownCounter<T>(nostd::string_view name,
-                        nostd::string_view description,
-                        nostd::string_view unit,
-                        bool enabled)
+  BoundUpDownCounter(nostd::string_view name,
+                     nostd::string_view description,
+                     nostd::string_view unit,
+                     bool enabled)
       : BoundSynchronousInstrument<T>(name,
                                       description,
                                       unit,

From 75ed1cd19d768c869c6b8b4df1e1093140b6d48c Mon Sep 17 00:00:00 2001
From: owent <admin@owent.net>
Date: Sun, 24 Oct 2021 10:43:26 +0800
Subject: [PATCH 2/2] Fix constructor of `GaugeAggregator`

Signed-off-by: owent <admin@owent.net>
---
 .../opentelemetry/sdk/metrics/aggregator/gauge_aggregator.h     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sdk/include/opentelemetry/sdk/metrics/aggregator/gauge_aggregator.h b/sdk/include/opentelemetry/sdk/metrics/aggregator/gauge_aggregator.h
index c74d057bd1..e953e8c619 100644
--- a/sdk/include/opentelemetry/sdk/metrics/aggregator/gauge_aggregator.h
+++ b/sdk/include/opentelemetry/sdk/metrics/aggregator/gauge_aggregator.h
@@ -33,7 +33,7 @@ template <class T>
 class GaugeAggregator : public Aggregator<T>
 {
 public:
-  explicit GaugeAggregator<T>(metrics_api::InstrumentKind kind)
+  explicit GaugeAggregator(metrics_api::InstrumentKind kind)
   {
     static_assert(std::is_arithmetic<T>::value, "Not an arithmetic type");
     this->kind_        = kind;