Add valgrind to travis configuration and check for leaks

.travis.yml

@@ -12,13 +12,14 @@ addons:
       - libcairo2-dev
       - libnotify-dev
       - libgtk-3-dev
+      - valgrind
 dist: trusty
 sudo: false
 language: c
 before_install:
   - pip install --user cpp-coveralls
 script:
-  - CFLAGS="-fprofile-arcs -ftest-coverage -Werror" make all dunstify test
+  - CFLAGS="-fprofile-arcs -ftest-coverage -Werror" make all dunstify test-valgrind
   - coveralls
 compiler:
   - gcc

.valgrind.suppressions

@@ -0,0 +1,10 @@
+{
+   xdgBaseDir_leak
+   # see https://github.com/devnev/libxdg-basedir/pull/6
+   Memcheck:Leak
+   fun:malloc
+   ...
+   fun:xdgInitHandle
+   ...
+   fun:main
+}

Makefile

@@ -44,10 +44,20 @@ dunst: ${OBJ} main.o
 dunstify: dunstify.o
 	${CC} ${CFLAGS} -o $@ dunstify.o ${LDFLAGS}
 
-.PHONY: test
+.PHONY: test test-valgrind
 test: test/test
 	cd test && ./test
 
+test-valgrind: test/test
+	cd ./test \
+		&& valgrind \
+			--suppressions=../.valgrind.suppressions \
+			--leak-check=full \
+			--show-leak-kinds=definite \
+			--errors-for-leak-kinds=definite \
+			--error-exitcode=123 \
+			./test
+
 test/test: ${OBJ} ${TEST_OBJ}
 	${CC} ${CFLAGS} -o $@ ${TEST_OBJ} ${OBJ} ${LDFLAGS}