added ub exploration to ex090

091_async8.zig

@@ -0,0 +1,20 @@
+//
+// Perhaps you have been wondering why we have always called 'suspend'
+// with an expression in the form of an empty block:
+//
+//     suspend {}
+//
+// well,
+//
+const print = @import("std").debug.print;
+
+pub fn main() void {
+
+    var my_beef = getBeef(0);
+
+    print("beef? {X}!\n", .{my_beef});
+}
+
+fn getBeef(input: u32) u32 {
+    suspend {}
+}