simpletrace: suppress a warning from unused variable
Avoid this warning:
CC simpletrace.o
/src/qemu/simpletrace.c: In function 'writeout_thread':
/src/qemu/simpletrace.c:122:12: error: variable 'unused' set but not used [-Werror=unused-but-set-variable]
by adding GCC attribute unused to the variable.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
diff --git a/simpletrace.c b/simpletrace.c
index f1dbb5e..de355e9 100644
--- a/simpletrace.c
+++ b/simpletrace.c
@@ -119,7 +119,7 @@
TraceRecord record;
unsigned int writeout_idx = 0;
unsigned int num_available, idx;
- size_t unused;
+ size_t unused __attribute__ ((unused));
for (;;) {
wait_for_trace_records_available();