Covariant return type.

2 files changed, 15 insertions, 10 deletions

diff --git a/document/src/vespa/document/fieldvalue/boolfieldvalue.cpp b/document/src/vespa/document/fieldvalue/boolfieldvalue.cpp
index 6eb5adc875c..e7cab34d3ea 100644
--- a/document/src/vespa/document/fieldvalue/boolfieldvalue.cpp
+++ b/document/src/vespa/document/fieldvalue/boolfieldvalue.cpp
@@ -82,23 +82,28 @@ BoolFieldValue::getAsString() const {
     return _value ? "true" : "false";
 }
 
-FieldValue& BoolFieldValue::operator=(vespalib::stringref v) {
+BoolFieldValue&
+BoolFieldValue::operator=(vespalib::stringref v) {
     _value = (v == "true");
     return *this;
 }
-FieldValue& BoolFieldValue::operator=(int32_t v) {
+BoolFieldValue&
+BoolFieldValue::operator=(int32_t v) {
     _value = (v != 0);
     return *this;
 }
-FieldValue& BoolFieldValue::operator=(int64_t v) {
+BoolFieldValue&
+BoolFieldValue::operator=(int64_t v) {
     _value = (v != 0);
     return *this;
 }
-FieldValue& BoolFieldValue::operator=(float v) {
+BoolFieldValue&
+BoolFieldValue::operator=(float v) {
     _value = (v != 0);
     return *this;
 }
-FieldValue& BoolFieldValue::operator=(double v) {
+BoolFieldValue&
+BoolFieldValue::operator=(double v) {
     _value = (v != 0);
     return *this;
 }
diff --git a/document/src/vespa/document/fieldvalue/boolfieldvalue.h b/document/src/vespa/document/fieldvalue/boolfieldvalue.h
index e87a337856f..e453359214d 100644
--- a/document/src/vespa/document/fieldvalue/boolfieldvalue.h
+++ b/document/src/vespa/document/fieldvalue/boolfieldvalue.h
@@ -41,11 +41,11 @@ public:
     double getAsDouble() const override;
     vespalib::string getAsString() const override;
 
-    FieldValue& operator=(vespalib::stringref) override;
-    FieldValue& operator=(int32_t) override;
-    FieldValue& operator=(int64_t) override;
-    FieldValue& operator=(float) override;
-    FieldValue& operator=(double) override;
+    BoolFieldValue& operator=(vespalib::stringref) override;
+    BoolFieldValue& operator=(int32_t) override;
+    BoolFieldValue& operator=(int64_t) override;
+    BoolFieldValue& operator=(float) override;
+    BoolFieldValue& operator=(double) override;
 
     DECLARE_IDENTIFIABLE(BoolFieldValue);
 };