1 files changed, 4 insertions, 5 deletions

diff --git a/src/main/java/cuchaz/enigma/analysis/SourceIndexMethodVisitor.java b/src/main/java/cuchaz/enigma/analysis/SourceIndexMethodVisitor.java
index 83e5e04..2a638db 100644
--- a/src/main/java/cuchaz/enigma/analysis/SourceIndexMethodVisitor.java
+++ b/src/main/java/cuchaz/enigma/analysis/SourceIndexMethodVisitor.java
@@ -33,6 +33,7 @@ public class SourceIndexMethodVisitor extends SourceIndexVisitor {
 
         private Multimap<String, Identifier> unmatchedIdentifier = HashMultimap.create();
         private Map<String, Entry> identifierEntryCache = new HashMap<>();
+        private int argumentPosition = 0;
 
         public SourceIndexMethodVisitor(ReferencedEntryPool entryPool, ClassDefEntry ownerEntry, MethodDefEntry methodEntry) {
                 super(entryPool);
@@ -107,10 +108,9 @@ public class SourceIndexMethodVisitor extends SourceIndexVisitor {
 
         @Override
         public Void visitParameterDeclaration(ParameterDeclaration node, SourceIndex index) {
-                ParameterDefinition def = node.getUserData(Keys.PARAMETER_DEFINITION);
+                // DO NOT USE def.getSlot()! Doubleword slots increase by 2, not by 1
 
-                int variableOffset = this.methodEntry.getVariableOffset(ownerEntry);
-                int parameterIndex = def.getSlot() - variableOffset;
+                int parameterIndex = (argumentPosition++);
 
                 if (parameterIndex >= 0) {
                         LocalVariableEntry localVariableEntry = new LocalVariableEntry(methodEntry, parameterIndex, node.getName());
@@ -184,8 +184,7 @@ public class SourceIndexMethodVisitor extends SourceIndexVisitor {
                                 if (variable != null) {
                                         VariableDefinition originalVariable = variable.getOriginalVariable();
                                         if (originalVariable != null) {
-                                                int variableOffset = methodEntry.getVariableOffset(ownerEntry);
-                                                int variableIndex = originalVariable.getSlot() - variableOffset;
+                                                int variableIndex = (argumentPosition++);
                                                 if (variableIndex >= 0) {
                                                         LocalVariableEntry localVariableEntry = new LocalVariableEntry(methodEntry, variableIndex, initializer.getName());
                                                         identifierEntryCache.put(identifier.getName(), localVariableEntry);