From 4581cbcdc3c70fa94c729da7e25c6a152936cfd3 Mon Sep 17 00:00:00 2001 From: Blue Swirl Date: Wed, 13 Oct 2010 18:38:08 +0000 Subject: i386: avoid a write only variable Compiling with GCC 4.6.0 20100925 produced warnings: /src/qemu/target-i386/op_helper.c: In function 'switch_tss': /src/qemu/target-i386/op_helper.c:283:53: error: variable 'new_trap' set but not used [-Werror=unused-but-set-variable] Fix by adding a dummy cast so that the variable is not unused. Add also pointer to docs. Signed-off-by: Blue Swirl --- target-i386/op_helper.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/target-i386/op_helper.c b/target-i386/op_helper.c index ec6b3e9384..43fbd0c778 100644 --- a/target-i386/op_helper.c +++ b/target-i386/op_helper.c @@ -349,6 +349,10 @@ static void switch_tss(int tss_selector, new_segs[R_GS] = 0; new_trap = 0; } + /* XXX: avoid a compiler warning, see + http://support.amd.com/us/Processor_TechDocs/24593.pdf + chapters 12.2.5 and 13.2.4 on how to implement TSS Trap bit */ + (void)new_trap; /* NOTE: we must avoid memory exceptions during the task switch, so we make dummy accesses before */ -- cgit v1.2.1