From d2b1e382070e4580bf4486317b8ca740ac5fda01 Mon Sep 17 00:00:00 2001
From: Andrey Senyaev <andrey.senyaev@gmail.com>
Date: Thu, 14 Jul 2022 11:17:38 +0300
Subject: [PATCH] Pragma to ignore -Waggressive-loop-optimizations on Linux
 ARM64

---
 modules/features2d/src/sift.simd.hpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/features2d/src/sift.simd.hpp b/modules/features2d/src/sift.simd.hpp
index b5033459b9..dfe113b9b3 100644
--- a/modules/features2d/src/sift.simd.hpp
+++ b/modules/features2d/src/sift.simd.hpp
@@ -829,10 +829,14 @@ else // CV_8U
         v_pack_store(dst + k, __pack01);
     }
 #endif
+// avoid warning "iteration 7 invokes undefined behavior" on Linux ARM64
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Waggressive-loop-optimizations"
     for( ; k < len; k++ )
     {
         dst[k] = saturate_cast<uchar>(rawDst[k]*nrm2);
     }
+#pragma GCC diagnostic pop
 }
 #else
     float* dst = dstMat.ptr<float>(row);