langref: document modules, root source files, etc

1 files changed, 18 insertions, 0 deletions

diff --git a/doc/langref/panic_handler.zig b/doc/langref/panic_handler.zig
new file mode 100644
index 0000000000..7eb3a67f16
--- /dev/null
+++ b/doc/langref/panic_handler.zig
@@ -0,0 +1,18 @@
+pub fn main() void {
+    @setRuntimeSafety(true);
+    var x: u8 = 255;
+    // Let's overflow this integer!
+    x += 1;
+}
+
+pub const panic = std.debug.FullPanic(myPanic);
+
+fn myPanic(msg: []const u8, first_trace_addr: ?usize) noreturn {
+    _ = first_trace_addr;
+    std.debug.print("Panic! {s}\n", .{msg});
+    std.process.exit(1);
+}
+
+const std = @import("std");
+
+// exe=fail