GP-4339 fixed memory access exception in VT MatchData

Ghidra/Features/Base/src/main/java/ghidra/app/plugin/match/MatchData.java

@@ -15,16 +15,17 @@
  */
 package ghidra.app.plugin.match;
 
+import java.util.*;
+
 import generic.stl.Pair;
 import ghidra.program.model.address.*;
 import ghidra.program.model.listing.*;
 import ghidra.program.model.mem.MemoryAccessException;
+import ghidra.util.Msg;
 import ghidra.util.exception.CancelledException;
 import ghidra.util.search.trie.*;
 import ghidra.util.task.TaskMonitor;
 
-import java.util.*;
-
 public class MatchData {
  private MatchData() {
  // non-instantiable
@@ -80,7 +81,10 @@ private static ByteTrieIfc<Pair<Set<Address>, Set<Address>>> extractSourceHashes
  bytes = aData.getBytes();
  }
  catch (MemoryAccessException e) {
- throw new RuntimeException(e);
+ // if all the bytes for this data cannot be accessed then skip it
+ Msg.warn(MatchData.class, "Cannot process data at " + aData.getAddress() +
+ " because it runs into uninitialized memory.");
+ continue;
  }
  byte first = bytes[0];
  for (int ii = 1; ii < bytes.length; ++ii) {
@@ -97,7 +101,10 @@ private static ByteTrieIfc<Pair<Set<Address>, Set<Address>>> extractSourceHashes
  bytes = aData.getBytes();
  }
  catch (MemoryAccessException e) {
- throw new RuntimeException(e);
+ // if all the bytes for this data cannot be accessed then skip it
+ Msg.warn(MatchData.class, "Cannot process data at " +
+ aData.getAddress() + " because it runs into uninitialized memory.");
+ continue;
  }
  }
  ByteTrieNodeIfc<Pair<Set<Address>, Set<Address>>> node = trie.find(bytes);