From 088348c3d3056fb638e836d3861320d9712724a8 Mon Sep 17 00:00:00 2001
From: Zeinab Pourgheisari <z.pourgheisari@gmail.com>
Date: Mon, 15 Dec 2025 15:15:39 +0100
Subject: [PATCH] GSA: Fix iterator invalidation when expanding gamma trees

---
 experimental/lib/Analysis/GSAAnalysis.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/experimental/lib/Analysis/GSAAnalysis.cpp b/experimental/lib/Analysis/GSAAnalysis.cpp
index 5e9cda5eec..e1fdc88f69 100644
--- a/experimental/lib/Analysis/GSAAnalysis.cpp
+++ b/experimental/lib/Analysis/GSAAnalysis.cpp
@@ -413,8 +413,9 @@ void experimental::gsa::GSAAnalysis::convertPhiToGamma(
   mlir::DominanceInfo domInfo;
   mlir::CFGLoopInfo loopInfo(domInfo.getDomTree(&region));
 
+  auto gatesSnapshot = gatesPerBlock;
   // For each block
-  for (auto const &[phiBlock, phis] : gatesPerBlock) {
+  for (auto const &[phiBlock, phis] : gatesSnapshot) {
 
     // For each phi
     for (Gate *phi : phis) {