From 1d2a50ecaaef9442f76245ab7ef64020a36d4a2e Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@acm.org>
Date: Mon, 26 Aug 2019 00:24:45 +0000
Subject: [PATCH] scripts/run-regression-tests: Suppress several gcc 9 compiler
 warnings

Suppress several gcc 9 compiler warnings for kernel versions before v5.1.


git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@8570 d57e44dd-8a1f-0410-8b47-8ef2f437770f
---
 scripts/run-regression-tests | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/scripts/run-regression-tests b/scripts/run-regression-tests
index 0ba6ce7e2..4cb024949 100755
--- a/scripts/run-regression-tests
+++ b/scripts/run-regression-tests
@@ -675,8 +675,16 @@ do
       2.*|3.*)
 	  # Tell the kernel that we are using gcc 4.6.
 	  KCFLAGS="-U__GNUC__ -U__GNUC_MINOR__ -D__GNUC__=4 -D__GNUC_MINOR__=6"
-	  export KCFLAGS;;
   esac
+  # See also commit bd664f6b3e37 ("disable new gcc-7.1.1 warnings for now";
+  # v4.13) and commit 6f303d60534c ("gcc-9: silence 'address-of-packed-member'
+  # warning"; v5.1).
+  for w in -Wno-format-truncation -Wno-format-overflow -Wno-int-in-bool-context -Wno-address-of-packed-member; do
+      if gcc -c -xc - "$w" </dev/null >&/dev/null; then
+	  KCFLAGS+=" $w"
+      fi
+  done
+  export KCFLAGS
   subdirs=(drivers/scst)
   if [ "${run_sparse}" = "true" ]; then
     run_sparse "$k" "${subdirs[@]}"