waitpid should specify WNOHANG

If the child process our terminal is executing behaves poorly and
doesn't waitpid all of its own children, then we can hang the full
terminal. This is not ideal, so specify WNOHANG.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/Command.zig b/src/Command.zig
index 121b91a45..1e63d9161 100644
--- a/src/Command.zig
+++ b/src/Command.zig
@@ -186,7 +186,10 @@ fn setupFd(src: File.Handle, target: i32) !void {
 
 /// Wait for the command to exit and return information about how it exited.
 pub fn wait(self: Command) !Exit {
-    const res = std.os.waitpid(self.pid.?, 0);
+    // We specify NOHANG because its not our fault if the process we launch
+    // for the tty doesn't properly waitpid its children. We don't want
+    // to hang the terminal over it.
+    const res = std.os.waitpid(self.pid.?, std.c.W.NOHANG);
     return Exit.init(res.status);
 }