File 0039-linux-user-uname-Fix-GCC-9-build-wa.patch of Package qemu

Overview Repositories Revisions Requests Users Attributes Meta

File 0039-linux-user-uname-Fix-GCC-9-build-wa.patch of Package qemu (Revision 260456e4e7f72256411df2d7e4b065a3)

Currently displaying revision 260456e4e7f72256411df2d7e4b065a3 , Show latest

From: Alistair Francis <Alistair.Francis@wdc.com>
Date: Sat, 4 May 2019 07:59:09 -0600
Subject: linux-user/uname: Fix GCC 9 build warnings
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Fix this warning when building with GCC9 on Fedora 30:
In function strncpy,
    inlined from sys_uname at /home/alistair/qemu/linux-user/uname.c:94:3:
/usr/include/bits/string_fortified.h:106:10: error: __builtin_strncpy output may be truncated copying 64 bytes from a string of length 64 [-Werror=stringop-truncation]
  106 |   return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest));
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
 linux-user/uname.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/linux-user/uname.c b/linux-user/uname.c
index 313b79dbad..2fc6096a5b 100644
--- a/linux-user/uname.c
+++ b/linux-user/uname.c
@@ -73,7 +73,7 @@ const char *cpu_to_uname_machine(void *cpu_env)
 #define COPY_UTSNAME_FIELD(dest, src) \
   do { \
       /* __NEW_UTS_LEN doesn't include terminating null */ \
-      (void) strncpy((dest), (src), __NEW_UTS_LEN); \
+      (void) memcpy((dest), (src), MIN(strlen(src), __NEW_UTS_LEN)); \
       (dest)[__NEW_UTS_LEN] = '\0'; \
   } while (0)

Places

File 0039-linux-user-uname-Fix-GCC-9-build-wa.patch of Package qemu (Revision 260456e4e7f72256411df2d7e4b065a3)

Places