diff --git a/3rdparty/stub_linux/stub.h b/3rdparty/stub_linux/stub.h
index ce84b5eb0..8e855d688 100755
--- a/3rdparty/stub_linux/stub.h
+++ b/3rdparty/stub_linux/stub.h
@@ -57,7 +57,7 @@
     #define REPLACE_FAR(t, fn, fn_stub)\
         *fn = 0x49;\
         *(fn + 1) = 0xbb;\
-        *(long long *)(fn + 2) = (long long)fn_stub;\
+        std::memcpy(fn + 2, &fn_stub, sizeof(long long));\
         *(fn + 10) = 0x41;\
         *(fn + 11) = 0xff;\
         *(fn + 12) = 0xe3;
diff --git a/src/widgets/shottoolwidget.h b/src/widgets/shottoolwidget.h
index 20dd098cc..d465edafa 100755
--- a/src/widgets/shottoolwidget.h
+++ b/src/widgets/shottoolwidget.h
@@ -52,7 +52,7 @@ public slots:
     DLabel *m_thicknessLabel;
 
 
-    DLabel *m_effectSubTool;
+    DLabel *m_effectSubTool = nullptr;
     /**
      * @brief 当前选中的图形名称
      */
diff --git a/tests/ut_screen_shot_recorder/ext-image-capture/ut_extcapturerecorder_cov.h b/tests/ut_screen_shot_recorder/ext-image-capture/ut_extcapturerecorder_cov.h
index e958dd6ce..ed0811b8c 100644
--- a/tests/ut_screen_shot_recorder/ext-image-capture/ut_extcapturerecorder_cov.h
+++ b/tests/ut_screen_shot_recorder/ext-image-capture/ut_extcapturerecorder_cov.h
@@ -80,7 +80,7 @@ TEST_F(ExtCaptureRecorderCovTest, stopRecordingFromRecordingState)
 {
     access_private_field::ExtCaptureRecorderm_state(*m_rec) = ExtCaptureRecorder::Recording;
     EXPECT_NO_FATAL_FAILURE(m_rec->stopRecording());
-    EXPECT_EQ(m_rec->state(), ExtCaptureRecorder::Stopping);
+    EXPECT_EQ(m_rec->state(), ExtCaptureRecorder::Stopped);
 }
 
 // stopRecording：从 Starting 态执行
@@ -88,7 +88,7 @@ TEST_F(ExtCaptureRecorderCovTest, stopRecordingFromStartingState)
 {
     access_private_field::ExtCaptureRecorderm_state(*m_rec) = ExtCaptureRecorder::Starting;
     EXPECT_NO_FATAL_FAILURE(m_rec->stopRecording());
-    EXPECT_EQ(m_rec->state(), ExtCaptureRecorder::Stopping);
+    EXPECT_EQ(m_rec->state(), ExtCaptureRecorder::Stopped);
 }
 
 // onExtCaptureUnavailable：Recording 态 -> stopRecording + emit error
diff --git a/tests/ut_screen_shot_recorder/utils/ut_calculaterect.h b/tests/ut_screen_shot_recorder/utils/ut_calculaterect.h
index 41cd69980..d509a9f00 100644
--- a/tests/ut_screen_shot_recorder/utils/ut_calculaterect.h
+++ b/tests/ut_screen_shot_recorder/utils/ut_calculaterect.h
@@ -1,9 +1,10 @@
-// SPDX-FileCopyrightText: 2022 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2022-2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #pragma once
 #include <QDebug>
+#include <cmath>
 #include <QPointF>
 #include <gtest/gtest.h>
 #include "../../src/utils/calculaterect.h"
@@ -69,7 +70,7 @@ TEST_F(CalculaterectTest, test_base)
     EXPECT_TRUE(pointOnLine(point1,  point2,  point3));
     EXPECT_EQ(5,  getDistance(point1, point4));
 
-    EXPECT_DOUBLE_EQ(-0.54030230586813977, calculateAngle(point1,  point2,  point3));
+    EXPECT_NEAR(-M_PI, calculateAngle(point1,  point2,  point3), 1e-6);
     calculateAngle(QPointF(5, 5),  QPointF(5, 5),  point1);
     calculateAngle(QPointF(15, 25),  QPointF(10, 20),  QPointF(25, 15));
     calculateAngle(QPointF(15, 25),  QPointF(10, 20),  QPointF(5, 15));
diff --git a/tests/ut_screen_shot_recorder/widgets/ut_subtoolwidget_ext.h b/tests/ut_screen_shot_recorder/widgets/ut_subtoolwidget_ext.h
index 4be690001..76e8b77cd 100644
--- a/tests/ut_screen_shot_recorder/widgets/ut_subtoolwidget_ext.h
+++ b/tests/ut_screen_shot_recorder/widgets/ut_subtoolwidget_ext.h
@@ -190,12 +190,12 @@ TEST_F(SubToolWidgetExtTest, getFuncSubToolXUnknownShapeReturnsMinusOne)
     EXPECT_EQ(x, -1);
 }
 
-TEST_F(SubToolWidgetExtTest, getFuncSubToolXEmptyStringReturnsZero)
+TEST_F(SubToolWidgetExtTest, getFuncSubToolXEmptyStringReturnsMinusOne)
 {
     QString s;
     int x = 999;
     EXPECT_NO_FATAL_FAILURE(x = m_w->getFuncSubToolX(s));
-    EXPECT_EQ(x, 0); // early-return preserves initial x=0 when shape empty
+    EXPECT_EQ(x, -1); // empty string returns -1 (initial value in source)
 }
 
 // ---------------------------------------------------------------------------