Increase the high-end GCC version in qt-ci (#3488)

.github/workflows/qt-ci.yml

@@ -59,18 +59,18 @@ jobs:
     strategy:
       matrix:
         include:
-          - name: Linux
+          - name: Linux_GCC11
             os: ubuntu-24.04
             build_type: RelWithDebInfo
             qt_version: 6.8.1
             qt_target: desktop
             compiler: ""
-          - name: Linux_GCC13
+          - name: Linux_GCC14
             os: ubuntu-24.04
             build_type: RelWithDebInfo
             qt_version: 6.8.1
             qt_target: desktop
-            compiler: "gcc-13"
+            compiler: "gcc-14"
           - name: macOS
             os: macos-14
             build_type: RelWithDebInfo
@@ -128,7 +128,7 @@ jobs:
             libegl1 \
             fonts-noto-cjk
 
-      - name: Install compiler
+      - name: Install compiler (Linux)
         id: install_compiler
         if: runner.os == 'Linux' && matrix.compiler != ''
         uses: rlalik/setup-cpp-compiler@master

include/mbgl/util/image.hpp

@@ -88,11 +88,15 @@ public:
             return;
         }
         Image newImage(size_);
-        if (valid()) {
+        if (!size_.isEmpty() && valid()) {
             assert(bytes()); // gcc12 bug
             newImage.fill(0);
+            copy(*this,
+                 newImage,
+                 {0, 0},
+                 {0, 0},
+                 {std::min(size.width, size_.width), std::min(size.height, size_.height)});
         }
-        copy(*this, newImage, {0, 0}, {0, 0}, {std::min(size.width, size_.width), std::min(size.height, size_.height)});
         operator=(std::move(newImage));
     }