X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=include%2Flttng%2Fust-utils.h;h=2a65dd5364ef21e996ea7c05d17dff9a09887e8f;hb=b1d36dcecece5826b07504fae171e76be800b4ef;hp=23d1a07c01081aa55e7279c86d6915b495c271f2;hpb=eae3c72949135b48639440468dc78ea1d5e937e9;p=lttng-ust.git

diff --git a/include/lttng/ust-utils.h b/include/lttng/ust-utils.h
index 23d1a07c..2a65dd53 100644
--- a/include/lttng/ust-utils.h
+++ b/include/lttng/ust-utils.h
@@ -28,7 +28,11 @@
  *
  * Returns true if the type of @type is signed.
  */
-#define lttng_ust_is_signed_type(type)           ((type) -1 < (type) 1)
+#if defined(__cplusplus)
+#define lttng_ust_is_signed_type(type)	(std::is_signed<type>::value)
+#else
+#define lttng_ust_is_signed_type(type)	((type) -1 < (type) 1)
+#endif
 
 
 /**
@@ -42,6 +46,7 @@
 #define lttng_ust_is_integer_type(type) \
 		(__builtin_types_compatible_p(type, _Bool) || \
 		__builtin_types_compatible_p(type, char) || \
+		__builtin_types_compatible_p(type, signed char) || \
 		__builtin_types_compatible_p(type, unsigned char) || \
 		__builtin_types_compatible_p(type, short) || \
 		__builtin_types_compatible_p(type, unsigned short) || \