From 1230d4d2d300320f15f670d683c741a374bec3a0 Mon Sep 17 00:00:00 2001
From: Joseph Hunkeler <jhunkeler@gmail.com>
Date: Thu, 23 Apr 2026 01:29:17 -0400
Subject: Check error condition when redirecting IO streams in child process

---
 src/lib/core/multiprocessing.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'src/lib')

diff --git a/src/lib/core/multiprocessing.c b/src/lib/core/multiprocessing.c
index 8d848fe..db45c7b 100644
--- a/src/lib/core/multiprocessing.c
+++ b/src/lib/core/multiprocessing.c
@@ -82,7 +82,11 @@ int child(struct MultiProcessingPool *pool, struct MultiProcessingTask *task) {
         fprintf(stderr, "unable to open '%s' for writing: %s\n", task->log_file, strerror(errno));
         return -1;
     }
-    dup2(fileno(stdout), fileno(stderr));
+
+    if (dup2(STDOUT_FILENO, STDERR_FILENO) < 0) {
+        fclose(fp_log);
+        return -1;
+    }
 
     // Generate timestamp for log header
     time_t t = time(NULL);
-- 
cgit