From a283eda320ea1a4df5e6370528eb1b2ec64e466c Mon Sep 17 00:00:00 2001
From: Fernando Sahmkow <fsahmkow27@gmail.com>
Date: Sun, 6 Mar 2022 11:03:48 +0100
Subject: [PATCH] Shader Decompiler: Fix dangerous behavior of invalid iterator
 insertion.

---
 .../frontend/maxwell/structured_control_flow.cpp            | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/shader_recompiler/frontend/maxwell/structured_control_flow.cpp b/src/shader_recompiler/frontend/maxwell/structured_control_flow.cpp
index 578bc8c1b..ce42475d4 100644
--- a/src/shader_recompiler/frontend/maxwell/structured_control_flow.cpp
+++ b/src/shader_recompiler/frontend/maxwell/structured_control_flow.cpp
@@ -964,9 +964,9 @@ private:
         demote_endif_node.type = Type::EndIf;
         demote_endif_node.data.end_if.merge = return_block_it->data.block;
 
-        asl.insert(return_block_it, demote_endif_node);
-        asl.insert(return_block_it, demote_node);
-        asl.insert(return_block_it, demote_if_node);
+        const auto next_it_1 = asl.insert(return_block_it, demote_endif_node);
+        const auto next_it_2 = asl.insert(next_it_1, demote_node);
+        asl.insert(next_it_2, demote_if_node);
     }
 
     ObjectPool<Statement>& stmt_pool;