CI: add simple runtime test

.github/workflows/build.yml

@@ -70,7 +70,8 @@ jobs:
           pacman-key --init
           pacman -Syu --noconfirm
           pacman -S --noconfirm git meson clang wlroots libdrm libinput \
-            wayland-protocols cairo pango libxml2 xorg-xwayland librsvg libdisplay-info
+            wayland-protocols cairo pango libxml2 xorg-xwayland librsvg \
+            libdisplay-info
 
       - name: Install Debian Testing dependencies
         if: matrix.name == 'Debian'
@@ -78,7 +79,7 @@ jobs:
           sed -i '/^Types/ s/deb/& deb-src/' /etc/apt/sources.list.d/debian.sources
           apt-get update
           apt-get upgrade -y
-          apt-get install -y git gcc clang
+          apt-get install -y git gcc clang gdb xwayland
           apt-get build-dep -y labwc
 
       - name: Install FreeBSD dependencies
@@ -104,8 +105,9 @@ jobs:
           xbps-install -Syu
           xbps-install -y git meson gcc clang pkg-config scdoc \
             cairo-devel glib-devel libpng-devel librsvg-devel libxml2-devel \
-            pango-devel wlroots0.17-devel
+            pango-devel wlroots0.17-devel gdb bash xorg-server-xwayland
 
+      # These build are executed on all runners
       - name: Build with gcc
         run: |
           echo '
@@ -152,6 +154,7 @@ jobs:
             meson compile -C build-gcc-release
           ' | $TARGET
 
+      # Runtime tests, these run on Debian and Void only (the later due to libmusl being used)
       - name: Build with clang - release
         run: |
           echo '
@@ -161,3 +164,37 @@ jobs:
               -Dbuildtype=release -Db_ndebug=true --werror
             meson compile -C build-clang-release
           ' | $TARGET
+
+      - name: Build with gcc - runtime test
+        if: matrix.name == 'Debian'
+        run: |
+          echo '
+            cd "$GITHUB_WORKSPACE"
+            export CC=gcc
+            meson setup build-gcc-ci -Dxwayland=enabled -Db_sanitize=undefined --werror
+            meson compile -C build-gcc-ci
+            scripts/ci/smoke-test.sh build-gcc-ci
+          ' | $TARGET
+
+      - name: Build with clang - runtime test
+        if: matrix.name == 'Debian'
+        run: |
+          echo '
+            cd "$GITHUB_WORKSPACE"
+            export CC=clang
+            meson setup build-clang-ci -Dxwayland=enabled -Db_sanitize=undefined --werror
+            meson compile -C build-clang-ci
+            scripts/ci/smoke-test.sh build-clang-ci
+          ' | $TARGET
+
+      # Void-musl doesn't support sanitizer
+      - name: Build with gcc - runtime test w/o sanitizer
+        if: matrix.name == 'Void-musl'
+        run: |
+          echo '
+            cd "$GITHUB_WORKSPACE"
+            export CC=gcc
+            meson setup build-gcc-ci -Dxwayland=enabled --werror
+            meson compile -C build-gcc-ci
+            scripts/ci/smoke-test.sh build-gcc-ci
+          ' | $TARGET