From a5268e0276e6f00f357c0b7c99a3b62ba202238f Mon Sep 17 00:00:00 2001
From: iximeow <me@iximeow.net>
Date: Mon, 3 Aug 2020 21:13:00 -0700
Subject: invalid instruction fix

---
 src/long_mode/mod.rs | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/long_mode')

diff --git a/src/long_mode/mod.rs b/src/long_mode/mod.rs
index e8ccb30..6d42496 100644
--- a/src/long_mode/mod.rs
+++ b/src/long_mode/mod.rs
@@ -5592,6 +5592,9 @@ fn read_instr<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter: T, in
             }
         }
     };
+    if record == OpcodeRecord(Interpretation::Instruction(Opcode::Invalid), OperandCode::Nothing) {
+        return Err(DecodeError::InvalidOpcode);
+    }
     if let Interpretation::Instruction(opcode) = record.0 {
         instruction.opcode = opcode;
     } else {
-- 
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