Add CI build with clang sanitizers, increase stack size to 30 MB for builds with sanitizers.

.github/workflows/linux_builds.yml

@@ -30,7 +30,7 @@ jobs:
             build-mono: true
             artifact: true
 
-          - name: Editor with doubles and sanitizers (target=debug, tools=yes, float=64, tests=yes, use_asan=yes, use_ubsan=yes)
+          - name: Editor with doubles and GCC sanitizers (target=debug, tools=yes, float=64, tests=yes, use_asan=yes, use_ubsan=yes)
             cache-name: linux-editor-double-sanitizers
             target: debug
             tools: true
@@ -45,6 +45,17 @@ jobs:
             # Skip 2GiB artifact speeding up action.
             artifact: false
 
+          - name: Editor with clang sanitizers (target=debug, tools=yes, use_asan=yes, use_ubsan=yes, use_llvm=yes)
+            cache-name: linux-editor-llvm-sanitizers
+            target: debug
+            tools: true
+            tests: true
+            sconsflags: use_asan=yes use_ubsan=yes use_llvm=yes
+            bin: "./bin/godot.linuxbsd.tools.64.llvm.san"
+            build-mono: false
+            # Skip 2GiB artifact speeding up action.
+            artifact: false
+
           - name: Template w/ Mono (target=release, tools=no)
             cache-name: linux-template-mono
             target: release
@@ -75,7 +86,8 @@ jobs:
           # The actual dependencies
           sudo apt-get install build-essential pkg-config libx11-dev libxcursor-dev \
               libxinerama-dev libgl1-mesa-dev libglu-dev libasound2-dev libpulse-dev \
-              libdbus-1-dev libudev-dev libxi-dev libxrandr-dev yasm xvfb wget unzip
+              libdbus-1-dev libudev-dev libxi-dev libxrandr-dev yasm xvfb wget unzip \
+              llvm
 
       - name: Setup Godot build cache
         uses: ./.github/actions/godot-cache