From 8b2d0814646f5b6112b400a43876c3dcc7c60706 Mon Sep 17 00:00:00 2001
From: Kurt McMillan <Kurt.McMillan@amd.com>
Date: Tue, 7 Apr 2026 16:56:13 +0000
Subject: [PATCH] test: Improve error message when creating temporary file
 fails

---
 test/common/test-common.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/test/common/test-common.h b/test/common/test-common.h
index ec847705..3ccfd514 100644
--- a/test/common/test-common.h
+++ b/test/common/test-common.h
@@ -8,7 +8,9 @@
 #include "hipfile.h"
 #include "magic-word.h"
 
+#include <cerrno>
 #include <cstdint>
+#include <cstring>
 #include <iostream>
 #include <random>
 #include <stdexcept>
@@ -73,8 +75,10 @@ struct Tmpfile {
 
         path += "/hipFile.XXXXXX";
         if ((fd = mkstemp(path.data())) == -1) {
+            int mkstemp_err{errno};
             umask(old_umask);
-            throw std::runtime_error("Could not create temporary file");
+            throw std::runtime_error("Could not create temporary file " + path + ": " +
+                                     std::string(std::strerror(mkstemp_err)));
         }
 
         umask(old_umask);