From 4ad123d54f843a7571b25abc7c52b9de9b74389a Mon Sep 17 00:00:00 2001
From: Gilles Peskine <Gilles.Peskine@arm.com>
Date: Wed, 11 Mar 2026 19:20:46 +0100
Subject: [PATCH] IAR: let test code use stdio FILE functions

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
---
 tests/src/test_common.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tests/src/test_common.h b/tests/src/test_common.h
index aaeb1e7c8..40bdd4d65 100644
--- a/tests/src/test_common.h
+++ b/tests/src/test_common.h
@@ -23,6 +23,12 @@
 #define __USE_MINGW_ANSI_STDIO 1
 #endif
 
+#if defined(__IAR_SYSTEMS_ICC__)
+/* With IAR, enable support for ::FILE functions in stdio.h.
+ */
+#define _DLIB_FILE_DESCRIPTOR 1
+#endif
+
 /* Make sure we have the library configuration, and anything else that
  * is deemed necessary in test headers. */
 #include <test/build_info.h>