Update co_routine.cpp

zhongcy · Aug 2, 2017 · ac7d19a · ac7d19a
1 parent f16db64
commit ac7d19a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/co_routine.cpp b/co_routine.cpp
@@ -69,7 +69,7 @@ static unsigned long long counter(void)
 	register uint32_t lo, hi;
 	register unsigned long long o;
 	__asm__ __volatile__ (
-			"rdtscp" : "=a"(lo), "=d"(hi):: rcx(%rcx)
+			"rdtscp" : "=a"(lo), "=d"(hi)::"%rcx"
 			);
 	o = hi;
 	o <<= 32;