From e02b7c2c5cfc5ff55f725b00039c8f81be8229f0 Mon Sep 17 00:00:00 2001
From: iximeow <me@iximeow.net>
Date: Sat, 3 Jul 2021 13:42:30 -0700
Subject: defer checking invalid lengths for multi-prefix instructions

this profiles slightly better? not entirely sure why...
---
 src/long_mode/mod.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'src/long_mode/mod.rs')

diff --git a/src/long_mode/mod.rs b/src/long_mode/mod.rs
index b75f354..8ed68fb 100644
--- a/src/long_mode/mod.rs
+++ b/src/long_mode/mod.rs
@@ -7024,9 +7024,6 @@ fn read_instr<T: Reader<<Arch as yaxpeax_arch::Arch>::Address, <Arch as yaxpeax_
             break record;
         } else {
             let b = nextb;
-            if words.offset() >= 15 {
-                return Err(DecodeError::TooLong);
-            }
             if b == 0x0f {
                 let b = words.next().ok().ok_or(DecodeError::ExhaustedInput)?;
                 if b == 0x38 {
@@ -7088,6 +7085,9 @@ fn read_instr<T: Reader<<Arch as yaxpeax_arch::Arch>::Address, <Arch as yaxpeax_
             next_rec = unsafe {
                 core::ptr::read_volatile(&OPCODES[nextb as usize])
             };
+            if words.offset() >= 15 {
+                return Err(DecodeError::TooLong);
+            }
             prefixes.rex_from(0);
             match b {
                 0x26 |
-- 
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