Add presentation: 2025-linuxdaysHEADmaster

1 files changed, 16 insertions, 0 deletions

diff --git a/2025-linuxdays/cleanup.c b/2025-linuxdays/cleanup.c
new file mode 100644
index 0000000..078114f
--- /dev/null
+++ b/2025-linuxdays/cleanup.c
@@ -0,0 +1,16 @@
+#include <assert.h>
+#include <stdbit.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+static void _free(char **ptr) {
+  printf("Freeing %p=%p\n", ptr, *ptr);
+  free(*ptr);
+}
+
+int main(int argc, char *argv[]) {
+  [[gnu::cleanup(_free)]] char *buf = malloc(18);
+  [[gnu::cleanup(_free)]] char *null = NULL;
+  printf("Pointers: %p=%p %p=%p\n", &buf, buf, &null, null);
+  return 0;
+}