kc3-lang/kc3

diff --git a/Makefile b/Makefile
index 1cefaba..1448d25 100644
--- a/Makefile
+++ b/Makefile
@@ -74,12 +74,24 @@ debug:
 demo: build
 	${MAKE} -C libc3 demo
 
+demo_asan: asan
+	${MAKE} -C libc3 demo_asan
+
+demo_cov: cov
+	${MAKE} -C libc3 demo_cov
+
 demo_debug: debug
 	${MAKE} -C libc3 demo_debug
 
 demo_gl: build
 	${MAKE} -C libc3 demo_gl
 
+demo_gl_asan: asan
+	${MAKE} -C libc3 demo_gl_asan
+
+demo_gl_cov: cov
+	${MAKE} -C libc3 demo_gl_cov
+
 demo_gl_debug: debug
 	${MAKE} -C libc3 demo_gl_debug
 
@@ -190,27 +202,21 @@ test_gcovr:
 	${MAKE} gcovr
 
 test_ic3: build
-test_ic3:
 	${MAKE} -C test test_ic3
 
 test_ic3_asan: asan
-test_ic3_asan:
 	${MAKE} -C test test_ic3_asan
 
 test_ic3_cov: cov
-test_ic3_cov:
 	${MAKE} -C test test_ic3_cov
 
 test_ic3_debug: debug
-test_ic3_debug:
 	${MAKE} -C test test_ic3_debug
 
 test_libc3: build
-test_libc3:
 	${MAKE} -C test test_libc3
 
 test_libc3_cov: cov
-test_libc3_cov:
 	${MAKE} -C test test_libc3_cov
 
 test_libc3_debug:
@@ -220,12 +226,20 @@ test_libc3_debug:
 .PHONY: \
 	all \
 	asan \
+	build \
 	c3s \
 	cov \
 	clean \
 	clean_cov \
 	debug \
 	demo \
+	demo_asan \
+	demo_cov \
+	demo_debug \
+	demo_gl \
+	demo_gl_asan \
+	demo_gl_cov \
+	demo_gl_debug \
 	dist \
 	gcovr \
 	ic3 \
diff --git a/libc3/Makefile b/libc3/Makefile
index 1f4797b..57fb5d8 100644
--- a/libc3/Makefile
+++ b/libc3/Makefile
@@ -52,12 +52,24 @@ debug:
 demo: build
 	${MAKE} -C window demo
 
+demo_asan: asan
+	${MAKE} -C window demo_asan
+
+demo_cov: cov
+	${MAKE} -C window demo_cov
+
 demo_debug: debug
 	${MAKE} -C window demo_debug
 
 demo_gl: build
 	${MAKE} -C window demo_gl
 
+demo_gl_asan: asan
+	${MAKE} -C window demo_gl_asan
+
+demo_gl_cov: cov
+	${MAKE} -C window demo_gl_cov
+
 demo_gl_debug: debug
 	${MAKE} -C window demo_gl_debug
 
@@ -97,7 +109,30 @@ test:
 update_sources:
 	./update_sources
 
-.PHONY: all asan build clean cov debug distclean gdb_demo gen install lldb_demo test update_sources
+.PHONY: \
+	all \
+	asan \
+	build \
+	clean \
+	cov \
+	debug \
+	demo \
+	demo_asan \
+	demo_cov \
+	demo_debug \
+	demo_gl \
+	demo_gl_asan \
+	demo_gl_cov \
+	demo_gl_debug \
+	distclean \
+	gdb_demo \
+	gdb_demo_gl \
+	gen \
+	install \
+	lldb_demo \
+	lldb_demo_gl \
+	test \
+	update_sources \
 
 include config.mk
 include sources.mk
diff --git a/libc3/sequence.c b/libc3/sequence.c
index aab9017..e5864de 100644
--- a/libc3/sequence.c
+++ b/libc3/sequence.c
@@ -12,16 +12,24 @@
  */
 #include <assert.h>
 #include "sequence.h"
+#include "tag.h"
 
-s_sequence * sequence_init (s_sequence *sequence, f64 duration,
+void sequence_clean (s_sequence *seq)
+{
+  tag_clean(&seq->tag);
+}
+
+s_sequence * sequence_init (s_sequence *seq, f64 duration,
                             const s8 *title, f_sequence_load load,
                             f_sequence_render render)
 {
-  assert(sequence);
-  sequence->t = 0.0;
-  sequence->duration = duration;
-  sequence->title = title;
-  sequence->load = load;
-  sequence->render = render;
-  return sequence;
+  assert(seq);
+  seq->dt = 0.0;
+  seq->t = 0.0;
+  seq->duration = duration;
+  seq->title = title;
+  seq->load = load;
+  seq->render = render;
+  tag_init_void(&seq->tag);
+  return seq;
 }
diff --git a/libc3/sequence.h b/libc3/sequence.h
index d4a2c53..f150359 100644
--- a/libc3/sequence.h
+++ b/libc3/sequence.h
@@ -15,6 +15,9 @@
 
 #include "types.h"
 
+/* Stack-allocation compatible functions, call sequence_clean after
+   use. */
+void         sequence_clean (s_sequence *seq);
 s_sequence * sequence_init (s_sequence *sequence, f64 duration,
                             const s8 *title, f_sequence_load load,
                             f_sequence_render render);
diff --git a/libc3/window/Makefile b/libc3/window/Makefile
index f9a3a5b..14505c2 100644
--- a/libc3/window/Makefile
+++ b/libc3/window/Makefile
@@ -47,12 +47,24 @@ debug:
 demo: build
 	if ${HAVE_CAIRO}; then ${MAKE} -C cairo demo; fi
 
+demo_asan: asan
+	if ${HAVE_CAIRO}; then ${MAKE} -C cairo demo_asan; fi
+
+demo_cov: cov
+	if ${HAVE_CAIRO}; then ${MAKE} -C cairo demo_cov; fi
+
 demo_debug: debug
 	if ${HAVE_CAIRO}; then ${MAKE} -C cairo demo_debug; fi
 
 demo_gl: build
 	if ${HAVE_SDL2}; then ${MAKE} -C sdl2 demo; fi
 
+demo_gl_asan: asan
+	if ${HAVE_SDL2}; then ${MAKE} -C sdl2 demo_asan; fi
+
+demo_gl_cov: cov
+	if ${HAVE_SDL2}; then ${MAKE} -C sdl2 demo_cov; fi
+
 demo_gl_debug: debug
 	if ${HAVE_SDL2}; then ${MAKE} -C sdl2 demo_debug; fi
 
@@ -100,8 +112,19 @@ update_sources:
 	cov \
 	debug \
 	demo \
+	demo_asan \
+	demo_cov \
+	demo_debug \
+	demo_gl \
+	demo_gl_asan \
+	demo_gl_cov \
+	demo_gl_debug \
 	distclean \
+	gdb_demo \
+	gdb_demo_gl \
 	install \
+	lldb_demo \
+	lldb_demo_gl \
 	test \
 	update_sources
 
diff --git a/libc3/window/cairo/Makefile b/libc3/window/cairo/Makefile
index b00677a..daf6400 100644
--- a/libc3/window/cairo/Makefile
+++ b/libc3/window/cairo/Makefile
@@ -57,6 +57,12 @@ debug:
 demo: build
 	if ${HAVE_COCOA}; then ${MAKE} -C quartz demo; else if ${HAVE_WIN32}; then ${MAKE} -C win32 demo; else if ${HAVE_XCB}; then ${MAKE} -C xcb demo; fi; fi; fi
 
+demo_asan: asan
+	if ${HAVE_COCOA}; then ${MAKE} -C quartz demo_asan; else if ${HAVE_WIN32}; then ${MAKE} -C win32 demo_asan; else if ${HAVE_XCB}; then ${MAKE} -C xcb demo_asan; fi; fi; fi
+
+demo_cov: cov
+	if ${HAVE_COCOA}; then ${MAKE} -C quartz demo_cov; else if ${HAVE_WIN32}; then ${MAKE} -C win32 demo_cov; else if ${HAVE_XCB}; then ${MAKE} -C xcb demo_cov; fi; fi; fi
+
 demo_debug: debug
 	if ${HAVE_COCOA}; then ${MAKE} -C quartz demo_debug; else if ${HAVE_WIN32}; then ${MAKE} -C win32 demo_debug; else if ${HAVE_XCB}; then ${MAKE} -C xcb demo_debug; fi; fi; fi
 
@@ -106,9 +112,13 @@ update_sources:
 	cov \
 	debug \
 	demo \
+	demo_asan \
+	demo_cov \
+	demo_debug \
 	distclean \
 	gdb_demo \
 	install \
+	lldb_demo \
 	test \
 	update_sources
 
diff --git a/libc3/window/cairo/window_cairo.c b/libc3/window/cairo/window_cairo.c
index 67dd84d..8f7823a 100644
--- a/libc3/window/cairo/window_cairo.c
+++ b/libc3/window/cairo/window_cairo.c
@@ -14,6 +14,7 @@
 #include <stdlib.h>
 #include <xkbcommon/xkbcommon.h>
 #include <libc3/tag.h>
+#include "../window.h"
 #include "window_cairo.h"
 
 void c3_window_cairo_clean (void)
@@ -24,6 +25,11 @@ void c3_window_cairo_init (void)
 {
 }
 
+void window_cairo_clean (s_window_cairo *window)
+{
+  window_clean((s_window *) window);
+}
+
 s_window_cairo * window_cairo_init (s_window_cairo *window,
                                     sw x, sw y, uw w, uw h,
                                     const s8 *title,
@@ -118,6 +124,7 @@ s_sequence * window_cairo_sequence_init
  f_window_cairo_sequence_render render)
 {
   assert(seq);
+  seq->dt = 0.0;
   seq->t = 0.0;
   seq->duration = duration;
   seq->title = title;
diff --git a/libc3/window/cairo/window_cairo.h b/libc3/window/cairo/window_cairo.h
index 76e03fe..be868c2 100644
--- a/libc3/window/cairo/window_cairo.h
+++ b/libc3/window/cairo/window_cairo.h
@@ -20,18 +20,23 @@
 void c3_window_cairo_clean (void);
 void c3_window_cairo_init (void);
 
+/* Stack-allocation compatible functions, call window_cairo_clean
+   after use. */
+void             window_cairo_clean (s_window_cairo *window);
 s_window_cairo * window_cairo_init (s_window_cairo *window,
                                     sw x, sw y, uw w, uw h,
                                     const s8 *title,
                                     uw sequence_count);
 bool             window_cairo_run (s_window_cairo *window);
 
+/* Stack-allocation compatible functions, call sequence_clean
+   after use. */
 s_sequence *     window_cairo_sequence_init
 (s_sequence *sequence, f64 duration, const s8 *title,
  f_window_cairo_sequence_load load,
  f_window_cairo_sequence_render render);
 
-/* callbacks */
+/* Callbacks. */
 bool window_cairo_button_default (s_window_cairo *window, u8 button,
                                   sw x, sw y);
 bool window_cairo_key_default (s_window_cairo *window, uw keysym);
diff --git a/libc3/window/cairo/xcb/Makefile b/libc3/window/cairo/xcb/Makefile
index 69807db..0cfa050 100644
--- a/libc3/window/cairo/xcb/Makefile
+++ b/libc3/window/cairo/xcb/Makefile
@@ -51,6 +51,15 @@ debug:
 demo: build
 	${MAKE} -C demo demo
 
+demo_asan: asan
+	${MAKE} -C demo demo_asan
+
+demo_cov: cov
+	${MAKE} -C demo demo_cov
+
+demo_debug: debug
+	${MAKE} -C demo demo_debug
+
 distclean:
 	rm -rf ${DISTCLEANFILES}
 	${MAKE} -C demo distclean
@@ -80,10 +89,14 @@ update_sources:
 	cov \
 	debug \
 	demo \
+	demo_asan \
+	demo_cov \
+	demo_debug \
 	distclean \
 	gdb_demo \
 	gen \
 	install \
+	lldb_demo \
 	test \
 	update_sources
 
diff --git a/libc3/window/cairo/xcb/demo/Makefile b/libc3/window/cairo/xcb/demo/Makefile
index 6565300..49f6ea1 100644
--- a/libc3/window/cairo/xcb/demo/Makefile
+++ b/libc3/window/cairo/xcb/demo/Makefile
@@ -27,7 +27,8 @@ all:
 	${MAKE} debug
 	if ${HAVE_ASAN}; then ${MAKE} asan; fi
 
-asan: ${PROG_ASAN}
+asan:
+	${MAKE} ${PROG_ASAN}
 
 clean:
 	rm -rf ${CLEANFILES}
@@ -35,13 +36,28 @@ clean:
 clean_cov:
 	rm -rf ${CLEANFILES_COV}
 
-cov:   ${PROG_COV}
+cov:
+	${MAKE} ${PROG_COV}
 
-debug: ${PROG_DEBUG}
+debug:
+	${MAKE} ${PROG_DEBUG}
 
-demo: ${PROG}
+demo:
+	${MAKE} ${PROG}
 	time ./${PROG}
 
+demo_asan:
+	${MAKE} ${PROG_ASAN}
+	time ./${PROG_ASAN}
+
+demo_cov:
+	${MAKE} ${PROG_COV}
+	time ./${PROG_COV}
+
+demo_debug:
+	${MAKE} ${PROG_DEBUG}
+	time ./${PROG_DEBUG}
+
 distclean:
 	rm -rf ${DISTCLEANFILES}
 
@@ -55,6 +71,12 @@ install:
 	install -m 755 -d ${prefix}/bin
 	install -m 755 ${PROG} ${prefix}/bin/${PROG}
 
+lldb_demo: debug
+	if [ -f ${PROG_DEBUG}.core ]; then lldb .libs/${PROG_DEBUG} ${PROG_DEBUG}.core; else lldb .libs/${PROG_DEBUG}; fi
+
+update_sources:
+	./update_sources
+
 .PHONY: \
 	all \
 	asan \
@@ -64,9 +86,14 @@ install:
 	cov \
 	debug \
 	demo \
+	demo_asan \
+	demo_cov \
+	demo_debug \
 	distclean \
 	gdb_demo \
-	install
+	install \
+	lldb_demo \
+	update_sources \
 
 include config.mk
 include sources.mk
diff --git a/libc3/window/cairo/xcb/demo/window_cairo_xcb_demo.c b/libc3/window/cairo/xcb/demo/window_cairo_xcb_demo.c
index 9cf1feb..779d09e 100644
--- a/libc3/window/cairo/xcb/demo/window_cairo_xcb_demo.c
+++ b/libc3/window/cairo/xcb/demo/window_cairo_xcb_demo.c
@@ -38,7 +38,7 @@ int main (int argc, char **argv)
     c3_clean(NULL);
     return g_c3_exit_code;
   }
-  c3_window_cairo_clean();
+  window_cairo_clean(&window);
   c3_clean(NULL);
   return 0;
 }
diff --git a/libc3/window/window.c b/libc3/window/window.c
index e95fd38..76d7cc9 100644
--- a/libc3/window/window.c
+++ b/libc3/window/window.c
@@ -42,6 +42,18 @@ bool window_animate (s_window *window)
   return true;
 }
 
+void window_clean (s_window *window)
+{
+  uw i;
+  assert(window);
+  i = 0;
+  while (i < window->sequence_count) {
+    sequence_clean(window->sequence + i);
+    i++;
+  }
+  free(window->sequence);
+}
+
 bool window_set_sequence_pos (s_window *window, uw sequence_pos)
 {
   s_sequence *seq;
diff --git a/libc3/window/window.h b/libc3/window/window.h
index 716498f..90338ca 100644
--- a/libc3/window/window.h
+++ b/libc3/window/window.h
@@ -16,6 +16,10 @@
 #include <libc3/types.h>
 #include "types.h"
 
+/* Stack-allocation compatible functions, call window_clean
+   after use. */
+void window_clean (s_window *window);
+
 bool window_animate (s_window *window);
 bool window_set_sequence_pos (s_window *window, uw sequence_pos);