From 6f9d8127227ac7dade9a6dd9463f0242dd295d80 Mon Sep 17 00:00:00 2001
From: Alexander Smorkalov <alexander.smorkalov@opencv.ai>
Date: Thu, 21 May 2026 11:10:31 +0300
Subject: [PATCH] Fixed build with old GCC.

---
 .../imgproc/test/test_connectedcomponents.cpp | 24 +++++++++----------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/modules/imgproc/test/test_connectedcomponents.cpp b/modules/imgproc/test/test_connectedcomponents.cpp
index 7d58f714e0..42ee000497 100644
--- a/modules/imgproc/test/test_connectedcomponents.cpp
+++ b/modules/imgproc/test/test_connectedcomponents.cpp
@@ -240,7 +240,7 @@ TEST(Imgproc_ConnectedComponents, missing_background_pixels)
 
 TEST(Imgproc_ConnectedComponents, spaghetti_bbdt_sauf_stats)
 {
-    cv::Mat1b img({16, 16}, {
+    cv::Mat1b img({16, 16}, { (unsigned char)
         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
         0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
         0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0,
@@ -361,8 +361,8 @@ TEST(Imgproc_ConnectedComponents, spaghetti_bbdt_sauf_stats)
 
 TEST(Imgproc_ConnectedComponents, chessboard_even)
 {
-    const auto size = {16, 16};
-    cv::Mat1b input(size, {
+    auto size = {16, 16};
+    cv::Mat1b input(size, { (unsigned char)
         1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
         0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
         1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
@@ -445,8 +445,8 @@ TEST(Imgproc_ConnectedComponents, chessboard_even)
 
 TEST(Imgproc_ConnectedComponents, chessboard_odd)
 {
-    const auto size = {15, 15};
-    cv::Mat1b input(size, {
+    auto size = {15, 15};
+    cv::Mat1b input(size, { (unsigned char)
         1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
         0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
         1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
@@ -526,8 +526,8 @@ TEST(Imgproc_ConnectedComponents, chessboard_odd)
 
 TEST(Imgproc_ConnectedComponents, maxlabels_8conn_even)
 {
-    const auto size = {16, 16};
-    cv::Mat1b input(size, {
+    auto size = {16, 16};
+    cv::Mat1b input(size, { (unsigned char)
         1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
         1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
@@ -607,8 +607,8 @@ TEST(Imgproc_ConnectedComponents, maxlabels_8conn_even)
 
 TEST(Imgproc_ConnectedComponents, maxlabels_8conn_odd)
 {
-   const auto size = {15, 15};
-    cv::Mat1b input(size, {
+    auto size = {15, 15};
+    cv::Mat1b input(size, { (unsigned char)
         1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
         1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
@@ -685,7 +685,7 @@ TEST(Imgproc_ConnectedComponents, maxlabels_8conn_odd)
 
 TEST(Imgproc_ConnectedComponents, single_row)
 {
-    const auto size = {1, 15};
+    auto size = {1, 15};
     cv::Mat1b input(size, {1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1});
     cv::Mat1i output_8c(size, {1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8});
     cv::Mat1i output_4c(size, {1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8});
@@ -715,8 +715,8 @@ TEST(Imgproc_ConnectedComponents, single_row)
 
 TEST(Imgproc_ConnectedComponents, single_column)
 {
-    const auto size = {15, 1};
-    cv::Mat1b input(size, {1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1});
+    auto size = {15, 1};
+    cv::Mat1b input(size, {(unsigned char)1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1});
     cv::Mat1i output_8c(size, {1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8});
     cv::Mat1i output_4c(size, {1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8});