contrib: add a tartan static analysis script and description

README.md

@@ -51,3 +51,15 @@ logs. There are two ways of doing so:
 
   3. `sudo systemctl restart upower.service`
   4. Grab logs using `journalctl -u upower.service` or similar
+
+## Using tartan
+
+[Tartan](https://gitlab.freedesktop.org/tartan/tartan/-/wikis/home) is a LLVM static
+analysis plugin built to analyze GLib code. It can be installed and then run using:
+
+```shell
+mkdir build
+cd build
+meson setup ..
+SCANBUILD=../contrib/tartan.sh ninja scan-build
+```

contrib/tartan.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+/usr/bin/scan-build-20 \
+    -load-plugin /usr/lib64/tartan/20.1/libtartan.so \
+    -disable-checker core.CallAndMessage \
+    -disable-checker core.NullDereference \
+    -disable-checker deadcode.DeadStores \
+    -disable-checker unix.Malloc \
+    -enable-checker tartan.GErrorChecker \
+    --exclude meson-private \
+    --status-bugs -v "$@"