From: Paolo Bonzini Date: Wed, 27 Mar 2013 13:34:32 +0000 (+0100) Subject: compiler: fix warning with GCC 4.8.0 X-Git-Tag: v1.4.1~6 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=da78a1bc7a6ad2c0653c265a19032540921c15d0;p=thirdparty%2Fqemu.git compiler: fix warning with GCC 4.8.0 GCC 4.8.0 introduces a new warning: block/qcow2-snapshot.c: In function 'qcow2_write_snapshots’: block/qcow2-snapshot.c:252:18: error: typedef 'qemu_build_bug_on__253' locally defined but not used [-Werror=unused-local-typedefs] QEMU_BUILD_BUG_ON(offsetof(QCowHeader, snapshots_offset) != ^ cc1: all warnings being treated as errors (Caret diagnostics aren't perfect yet with macros... :)) Work around it with __attribute__((unused)). Signed-off-by: Paolo Bonzini Message-id: 1364391272-1128-1-git-send-email-pbonzini@redhat.com Signed-off-by: Anthony Liguori (cherry picked from commit 99835e00849369bab726a4dc4ceed1f6f9ed967c) Signed-off-by: Michael Roth --- diff --git a/include/qemu/compiler.h b/include/qemu/compiler.h index 2f7998b6c12..6175c24c94e 100644 --- a/include/qemu/compiler.h +++ b/include/qemu/compiler.h @@ -33,7 +33,7 @@ #define cat(x,y) x ## y #define cat2(x,y) cat(x,y) #define QEMU_BUILD_BUG_ON(x) \ - typedef char cat2(qemu_build_bug_on__,__LINE__)[(x)?-1:1]; + typedef char cat2(qemu_build_bug_on__,__LINE__)[(x)?-1:1] __attribute__((unused)); #if defined __GNUC__ # if !QEMU_GNUC_PREREQ(4, 4)