From b06b3685748924b80023bcf9f1e567c2953cff96 Mon Sep 17 00:00:00 2001
From: Volker Berlin <volker.berlin@googlemail.com>
Date: Tue, 8 May 2018 18:10:52 +0200
Subject: [PATCH] subtract switch start value to compatible with br_table

---
 src/de/inetsoftware/jwebassembly/module/ModuleWriter.java | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/de/inetsoftware/jwebassembly/module/ModuleWriter.java b/src/de/inetsoftware/jwebassembly/module/ModuleWriter.java
index d4dafa6..2daf4d2 100644
--- a/src/de/inetsoftware/jwebassembly/module/ModuleWriter.java
+++ b/src/de/inetsoftware/jwebassembly/module/ModuleWriter.java
@@ -753,7 +753,12 @@ public abstract class ModuleWriter implements Closeable {
                                 byteCode.readInt();
                             }
                         } else {
-                            int count = -byteCode.readInt() + byteCode.readInt() + 1;
+                            int low = byteCode.readInt();
+                            if( low != 0 ) { // the br_table starts ever with the value 0. That we need to subtract the start value if it different
+                                writeConstInt( low );
+                                writeNumericOperator( NumericOperator.sub, ValueType.i32 );
+                            }
+                            int count = byteCode.readInt() - low + 1;
                             for( int i = 0; i < count; i++ ) {
                                 byteCode.readInt();
                             }