From 1e46747e7222b70839e8e1d4accd006f5384eeb9 Mon Sep 17 00:00:00 2001
From: Moritz Pfeffer <mpfeffer@google.com>
Date: Wed, 13 May 2026 16:45:42 +0000
Subject: [PATCH] Fix TRACE_enable panic on missing file to match C fopen
 append behavior

---
 programs/zstdcli_trace.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/programs/zstdcli_trace.rs b/programs/zstdcli_trace.rs
index 49af1caf..621832e1 100644
--- a/programs/zstdcli_trace.rs
+++ b/programs/zstdcli_trace.rs
@@ -24,6 +24,7 @@ pub unsafe fn TRACE_enable(filename: *const core::ffi::c_char) {
     assert!(traceFile.is_none());
     let traceFile = traceFile.insert(
         OpenOptions::new()
+            .create(true)
             .append(true)
             .open(CStr::from_ptr(filename).to_str().unwrap())
             .unwrap(),