From 1bdcf39d7b55642ae26bc32ffed1fdc36cfc9d56 Mon Sep 17 00:00:00 2001
From: gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Thu, 13 Feb 2014 09:49:17 +0000
Subject: git-svn-id:
 svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6710
 35acf78f-673a-0410-8e92-d51de3d6d3f4

---
 os/rt/include/chschd.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'os/rt/include')

diff --git a/os/rt/include/chschd.h b/os/rt/include/chschd.h
index fe85f76cb..a89c49161 100644
--- a/os/rt/include/chschd.h
+++ b/os/rt/include/chschd.h
@@ -333,8 +333,10 @@ typedef struct ch_system {
    * @brief   Pointer to the panic message.
    * @details This pointer is meant to be accessed through the debugger, it is
    *          written once and then the system is halted.
+   * @note    Accesses to this pointer must never be optimized out so the
+   *          field itself is declared volatile.
    */
-  const char            *dbg_panic_msg;
+  const char            * volatile dbg_panic_msg;
 #endif
 #if CH_DBG_SYSTEM_STATE_CHECK || defined(__DOXYGEN__)
   /**
-- 
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