From 11c3b4bd4178c78af103f5397fc3aafd09a2a979 Mon Sep 17 00:00:00 2001
From: llogick <16590917+llogick@users.noreply.github.com>
Date: Tue, 27 Jan 2026 14:58:24 -0800
Subject: [PATCH] Fix std.process.run leaking memory if child.wait returned an
 error

---
 lib/std/process.zig | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/lib/std/process.zig b/lib/std/process.zig
index 6798bba675b9cbe98da2d8fe438c04a285e5d1f6..f7dd7e30173504deade22fee09fb361bc629f012 100644
--- a/lib/std/process.zig
+++ b/lib/std/process.zig
@@ -533,10 +533,16 @@ pub fn run(gpa: Allocator, io: Io, options: RunOptions) RunError!RunResult {
 
     try child.collectOutput(gpa, &stdout, &stderr, options.max_output_bytes);
 
+    const term = try child.wait(io);
+
+    const owned_stdout = try stdout.toOwnedSlice(gpa);
+    errdefer gpa.free(owned_stdout);
+    const owned_stderr = try stderr.toOwnedSlice(gpa);
+
     return .{
-        .stdout = try stdout.toOwnedSlice(gpa),
-        .stderr = try stderr.toOwnedSlice(gpa),
-        .term = try child.wait(io),
+        .stdout = owned_stdout,
+        .stderr = owned_stderr,
+        .term = term,
     };
 }
 
-- 
2.54.0