This Linux kernel change "MIPS: Fix GCC-4.6 ‘set but not used’ warning in ieee754int.h" is included in the Linux 2.6.38 release. This change is authored by David Daney <ddaney [at] caviumnetworks.com> on Mon Jan 24 14:51:36 2011 -0800. The commit for this change in Linux stable tree is 91b51f3 (patch).
MIPS: Fix GCC-4.6 'set but not used' warning in ieee754int.h GCC-4.6 can find more unused code than previous versions could. In the case of arch/mips/math-emu/ieee754int.h, the COMPXSP and COMPXDP macros are used in several places, but a couple of them leave xs unused. The easiest thing to do is mark it as __maybe_unused to quiet the warning. Signed-off-by: David Daney <firstname.lastname@example.org> To: email@example.com Patchwork: https://patchwork.linux-mips.org/patch/2032/ Signed-off-by: Ralf Baechle <firstname.lastname@example.org>
There are 4 lines of Linux source code added/deleted in this change. Code changes to Linux kernel are as follows.
arch/mips/math-emu/ieee754int.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/mips/math-emu/ieee754int.h b/arch/mips/math-emu/ieee754int.h index 2701d95..2a7d43f 100644 --- a/arch/mips/math-emu/ieee754int.h +++ b/arch/mips/math-emu/ieee754int.h @@ -70,7 +70,7 @@ #define COMPXSP - unsigned xm; int xe; int xs; int xc + unsigned xm; int xe; int xs __maybe_unused; int xc #define COMPYSP unsigned ym; int ye; int ys; int yc @@ -104,7 +104,7 @@ #define COMPXDP -u64 xm; int xe; int xs; int xc +u64 xm; int xe; int xs __maybe_unused; int xc #define COMPYDP u64 ym; int ye; int ys; int yc