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authorBernd Kuhls <bernd.kuhls@t-online.de>2017-08-19 06:46:45 (GMT)
committerThomas Petazzoni <thomas.petazzoni@free-electrons.com>2017-08-19 13:26:39 (GMT)
commitfb1ad31e61e4e38ef06d49390516a0a3a062324d (patch)
treec3f3865e0a416f0b002d72edbc8f0a7bb2679723
parentd257a25c9ccc41fcc4d1096732187cab16dfdb85 (diff)
downloadbuildroot-fb1ad31e61e4e38ef06d49390516a0a3a062324d.tar.gz
buildroot-fb1ad31e61e4e38ef06d49390516a0a3a062324d.tar.bz2
package/xen: fix build with gcc7
Fixes: http://autobuild.buildroot.net/results/f9553c1669bd05acee3ccea76e36c2474e534d8c/ Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de> [Thomas: improve patch, reformatted with Git and better commit log.] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
-rw-r--r--package/xen/0003-tools-libxc-xc_dom_arm-add-missing-variable-initiali.patch41
1 files changed, 41 insertions, 0 deletions
diff --git a/package/xen/0003-tools-libxc-xc_dom_arm-add-missing-variable-initiali.patch b/package/xen/0003-tools-libxc-xc_dom_arm-add-missing-variable-initiali.patch
new file mode 100644
index 0000000..e8d4b32
--- /dev/null
+++ b/package/xen/0003-tools-libxc-xc_dom_arm-add-missing-variable-initiali.patch
@@ -0,0 +1,41 @@
+From d4eece000391583a6e32a225d7eb5b573a5c5565 Mon Sep 17 00:00:00 2001
+From: Bernd Kuhls <bernd.kuhls@t-online.de>
+Date: Sat, 19 Aug 2017 15:22:58 +0200
+Subject: [PATCH] tools/libxc/xc_dom_arm: add missing variable initialization
+
+The variable domctl.u.address_size.size may remain uninitialized if
+guest_type is not one of xen-3.0-aarch64 or xen-3.0-armv7l. And the
+code precisely checks if this variable is still 0 to decide if the
+guest type is supported or not.
+
+This fixes the following build failure with gcc 7.x:
+
+xc_dom_arm.c:229:31: error: 'domctl.u.address_size.size' may be used uninitialized in this function [-Werror=maybe-uninitialized]
+ if ( domctl.u.address_size.size == 0 )
+
+Patch originally taken from
+https://www.mail-archive.com/xen-devel@lists.xen.org/msg109313.html.
+
+Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
+[Thomas: improved commit log, reformatted with Git.]
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+---
+ tools/libxc/xc_dom_arm.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/tools/libxc/xc_dom_arm.c b/tools/libxc/xc_dom_arm.c
+index e7d4bd0..e669fb0 100644
+--- a/tools/libxc/xc_dom_arm.c
++++ b/tools/libxc/xc_dom_arm.c
+@@ -223,6 +223,8 @@ static int set_mode(xc_interface *xch, domid_t domid, char *guest_type)
+
+ domctl.domain = domid;
+ domctl.cmd = XEN_DOMCTL_set_address_size;
++ domctl.u.address_size.size = 0;
++
+ for ( i = 0; i < ARRAY_SIZE(types); i++ )
+ if ( !strcmp(types[i].guest, guest_type) )
+ domctl.u.address_size.size = types[i].size;
+--
+2.9.4
+