From 3981e285b9bda62d3126ad9704f58bf232ba67e0 Mon Sep 17 00:00:00 2001
From: Ingo Weyrich <heckflosse67@gmx.de>
Date: Thu, 19 Sep 2019 22:06:41 +0200
Subject: [PATCH] dehaze: fix broken build on gcc < 9.x, #5456

---
 rtengine/ipdehaze.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/rtengine/ipdehaze.cc b/rtengine/ipdehaze.cc
index 68af84970..cf333a5d5 100644
--- a/rtengine/ipdehaze.cc
+++ b/rtengine/ipdehaze.cc
@@ -162,7 +162,8 @@ float estimate_ambient_light(const array2D<float> &R, const array2D<float> &G, c
 #ifdef _OPENMP
     #pragma omp parallel for schedule(dynamic) reduction(+:rr,gg,bb,n)
 #endif
-    for (const auto &p : patches) {
+    for (size_t i = 0; i < patches.size(); ++i) {
+        const auto &p = patches[i];
         const int pW = min(p.first + patchsize, W);
         const int pH = min(p.second + patchsize, H);