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[Qemu-devel] [PATCH 10/12] i386: avoid a write only variable
From: |
Blue Swirl |
Subject: |
[Qemu-devel] [PATCH 10/12] i386: avoid a write only variable |
Date: |
Fri, 8 Oct 2010 21:25:30 +0000 |
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 <address@hidden>
---
target-i386/op_helper.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/target-i386/op_helper.c b/target-i386/op_helper.c
index ec6b3e9..43fbd0c 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 */
--
1.6.2.4
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