ba71ab5e

pty: close master fd on fcntl failure in openForScenario

a73x   2026-04-19 13:23

errdefer guards against a leaked master fd if either fcntl
call errors. Happy path unchanged.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---

diff --git a/src/pty.zig b/src/pty.zig
index 23b42ea..c57d6a1 100644
--- a/src/pty.zig
+++ b/src/pty.zig
@@ -124,6 +124,7 @@ pub const Pty = struct {
        }
        // Slave fd isn't used by anyone in scenario mode; close to avoid leak.
        _ = c.close(slave);
        errdefer _ = c.close(master);

        // Match spawn's O_NONBLOCK on master.
        const flags = try std.posix.fcntl(master, std.posix.F.GETFL, 0);