gcc warning fix: -Wextra

For the "ordered comparison of pointer with integer zero" warning, fix
this by comparing (type) -1 against (type) 0 instead of just 0, so if
"type" is a pointer type, this pointer type will be applied to the right
operand too, thus fixing the warning.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

diff --git a/include/babeltrace/bitfield.h b/include/babeltrace/bitfield.h
index 40c1161489d66d6d56cba1fe1ba1803973289b18..b7fce09301781a7f8697921bc384aada739f0760 100644 (file)
--- a/include/babeltrace/bitfield.h
+++ b/include/babeltrace/bitfield.h
@@ -57,7 +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)                                     \
 ({                                                                     \