From f22907768a30ecd1b343c6f2d99e3b749b10315d Mon Sep 17 00:00:00 2001
From: Daniel Verkamp <daniel.verkamp@intel.com>
Date: Thu, 25 Jan 2018 09:41:25 -0700
Subject: [PATCH] mock: mark wrappers "used" so LTO will keep them

Fixes the build with CONFIG_LTO=y.

Change-Id: I3acbdd16c5ff44f50747644c09ca7b0228c790cc
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/396449
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
---
 include/spdk_internal/mock.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/spdk_internal/mock.h b/include/spdk_internal/mock.h
index a28e3df4c..a055d5622 100644
--- a/include/spdk_internal/mock.h
+++ b/include/spdk_internal/mock.h
@@ -68,7 +68,7 @@
 /* for defining the implmentation of wrappers for syscalls */
 #define DEFINE_WRAPPER(fn, ret, dargs, pargs, val) \
 	ret ut_ ## fn = val; \
-	ret __wrap_ ## fn dargs \
+	__attribute__((used)) ret __wrap_ ## fn dargs \
 	{ \
 		if (ut_ ## fn == (ret)MOCK_PASS_THRU) { \
 			return __real_ ## fn pargs; \