When RTE_COMPILE_TIME_CPUFLAGS is empty, the rte_cpu_check_supported()
code breaks with a "comparison is always false due to limited range of
data type". This is because the compile_time_flags[] array is empty.
Assigning the array dimension to a local variable apparently solves this.
Signed-off-by: Zhigang Lu <zlu at ezchip.com>
Acked-by: Bruce Richardson <bruce.richardson at intel.com>
---
lib/librte_eal/common/eal_common_cpuflags.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/lib/librte_eal/common/eal_common_cpuflags.c
b/lib/librte_eal/common/eal_common_cpuflags.c
index 6fd360c..8ba7b30 100644
--- a/lib/librte_eal/common/eal_common_cpuflags.c
+++ b/lib/librte_eal/common/eal_common_cpuflags.c
@@ -30,6 +30,7 @@
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
+#include <rte_common.h>
#include <rte_cpuflags.h>
/*
@@ -62,10 +63,10 @@ rte_cpu_check_supported(void)
static const enum rte_cpu_flag_t compile_time_flags[] = {
RTE_COMPILE_TIME_CPUFLAGS
};
- unsigned i;
+ unsigned count = RTE_DIM(compile_time_flags), i;
int ret;
- for (i = 0; i <
sizeof(compile_time_flags)/sizeof(compile_time_flags[0]); i++) {
+ for (i = 0; i < count; i++) {
ret = rte_cpu_get_flag_enabled(compile_time_flags[i]);
if (ret < 0) {
--
2.1.2
