gcc warning fix: -Wextra

[babeltrace.git] / include / babeltrace / bitfield.h

diff --git a/include/babeltrace/bitfield.h b/include/babeltrace/bitfield.h
index d14d562db55e2534f7fb1b415049571a87242737..b7fce09301781a7f8697921bc384aada739f0760 100644 (file)
--- a/include/babeltrace/bitfield.h
+++ b/include/babeltrace/bitfield.h
@@ -17,6 +17,14 @@
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
  */
 
 #include <stdint.h>    /* C99 5.2.4.2 Numerical limits */
@@ -49,7 +57,7 @@
        ___v <<= final;                                                 \
 })
 
-#define _bt_is_signed_type(type)       (((type)(-1)) < 0)
+#define _bt_is_signed_type(type)       ((type) -1 < (type) 0)
 
 #define _bt_unsigned_cast(type, v)                                     \
 ({                                                                     \