0618-tools-kdd-mute-spurious-gcc-warning.patch

From 7ec12946362cb0fd6a58c3f45464e847b3cd422d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
 <marmarek@invisiblethingslab.com>
Date: Thu, 5 Apr 2018 01:06:12 +0200
Subject: [PATCH] tools/kdd: mute spurious gcc warning
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gcc-8 complains:

    kdd.c:698:13: error: 'memcpy' offset [-204, -717] is out of the bounds [0, 216] of object 'ctrl' with type 'kdd_ctrl' {aka 'union <anonymous>'} [-Werror=array-bounds]
                 memcpy(buf, ((uint8_t *)&ctrl.c32) + offset, len);
                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    kdd.c: In function 'kdd_select_callback':
    kdd.c:642:14: note: 'ctrl' declared here
         kdd_ctrl ctrl;
                  ^~~~

But this is impossible - 'offset' is unsigned and correctly validated
few lines before.

Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
---
 tools/debugger/kdd/kdd.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/debugger/kdd/kdd.c b/tools/debugger/kdd/kdd.c
index 320c623edabe..c42a19989ab9 100644
--- a/tools/debugger/kdd/kdd.c
+++ b/tools/debugger/kdd/kdd.c
@@ -1030,7 +1030,10 @@ static void kdd_handle_read_ctrl(kdd_state *s)
             KDD_LOG(s, "Request outside of known control space\n");
             len = 0;
         } else {
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Warray-bounds"
             memcpy(buf, ((uint8_t *)&ctrl.c32) + offset, len);
+#pragma GCC diagnostic pop
         }
     }
 
-- 
2.44.0