Fix #14419

Author: ludviggunne

lib/symboldatabase.cpp

@@ -6852,15 +6852,17 @@ void SymbolDatabase::setValueType(Token* tok, const Enumerator& enumerator, cons
         if (valuetype.type == ValueType::Type::UNKNOWN_TYPE)
             valuetype.fromLibraryType(type->expressionString(), mSettings);
 
-        if (valuetype.isIntegral()) {
-            if (type->isSigned())
-                valuetype.sign = ValueType::Sign::SIGNED;
-            else if (type->isUnsigned())
-                valuetype.sign = ValueType::Sign::UNSIGNED;
-            else if (valuetype.type == ValueType::Type::CHAR)
-                valuetype.sign = mDefaultSignedness;
-            else
-                valuetype.sign = ValueType::Sign::SIGNED;
+        if (valuetype.sign == ValueType::UNKNOWN_SIGN) {
+            if (valuetype.isIntegral()) {
+                if (type->isSigned())
+                    valuetype.sign = ValueType::Sign::SIGNED;
+                else if (type->isUnsigned())
+                    valuetype.sign = ValueType::Sign::UNSIGNED;
+                else if (valuetype.type == ValueType::Type::CHAR)
+                    valuetype.sign = mDefaultSignedness;
+                else
+                    valuetype.sign = ValueType::Sign::SIGNED;
+            }
         }
 
         setValueType(tok, valuetype);