From eea0e6204dda57b4fbbe7082ffab136c1ab82830 Mon Sep 17 00:00:00 2001
From: Pascal Zittlau <pascal.zittlau@gmail.com>
Date: Wed, 17 Dec 2025 11:15:51 +0100
Subject: [PATCH] remove unnecessary ud2 instructions

---
 src/syscalls.zig                | 4 +---
 src/test/clone_no_new_stack.zig | 3 ---
 src/test/clone_raw.zig          | 3 ---
 3 files changed, 1 insertion(+), 9 deletions(-)

diff --git a/src/syscalls.zig b/src/syscalls.zig
index f64e03f..f7d3eb8 100644
--- a/src/syscalls.zig
+++ b/src/syscalls.zig
@@ -74,12 +74,10 @@ export fn syscall_handler(ctx: *SavedContext) callconv(.c) void {
             asm volatile (
                 \\ mov %[rsp], %%rsp
                 \\ syscall
-                \\ ud2
                 :
                 : [rsp] "r" (rsp_orig),
                   [number] "{rax}" (ctx.rax),
-                : .{ .memory = true }
-            );
+                : .{ .memory = true });
             unreachable;
         },
         .execve, .execveat => |s| {
diff --git a/src/test/clone_no_new_stack.zig b/src/test/clone_no_new_stack.zig
index 8d6c92e..44b12b0 100644
--- a/src/test/clone_no_new_stack.zig
+++ b/src/test/clone_no_new_stack.zig
@@ -30,9 +30,6 @@ pub fn main() !void {
         \\ mov $60, %%rax       # SYS_exit
         \\ syscall
         \\
-        \\ # Should not be reached
-        \\ ud2
-        \\
         \\ 1:
         \\ # Parent Path continues
         : [ret] "={rax}" (-> usize),
diff --git a/src/test/clone_raw.zig b/src/test/clone_raw.zig
index 57971fc..8c3c8d1 100644
--- a/src/test/clone_raw.zig
+++ b/src/test/clone_raw.zig
@@ -34,9 +34,6 @@ pub fn main() !void {
         \\ mov $60, %%rax       # SYS_exit
         \\ syscall
         \\
-        \\ # Should not be reached
-        \\ ud2
-        \\
         \\ 1:
         \\ # Parent Path continues
         : [ret] "={rax}" (-> usize),