1 files changed, 14 insertions, 0 deletions
diff --git a/2025-linuxdays/transunion.c b/2025-linuxdays/transunion.c
new file mode 100644
index 0000000..cde6059
--- /dev/null
+++ b/2025-linuxdays/transunion.c
@@ -0,0 +1,14 @@
+#include <stdint.h>
+#include <stdio.h>
+
+union [[gnu::transparent_union]] un {
+  void *ptr;
+  intptr_t i;
+};
+
+void pasi(union un v) { printf("%p\n", v.ptr); }
+
+int main(int argc, char *argv[]) {
+  pasi((intptr_t)0x42);
+  pasi((void *)&pasi);
+}