GP-5602 dwarf: check for conflicting data at func addr

Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/dwarf/DWARFFunction.java

@@ -4,9 +4,9 @@
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -392,6 +392,13 @@ public class DWARFFunction {
 					return false;
 				}
 
+				if (currentProgram.getListing().getDefinedDataAt(address) != null) {
+					getProgram().logWarningAt(address, name.getName(),
+						"DWARF: unable to create function at location that is marked as data: %s"
+								.formatted(name.getName()));
+					return false;
+				}
+
 				// create 1-byte function if one does not exist - primary label will become function names
 				function = currentProgram.getFunctionManager()
 						.createFunction(null, address, new AddressSet(address),