diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 3ac0d158073a70ea38e914faa71475664c2c568d..199507482797f1a69748c275ad4ef6facbb21b69 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,10 @@
+2015-12-14  Thomas Preud'homme  <thomas.preudhomme@arm.com>
+
+	PR testsuite/68629
+	* lib/target-supports.exp (check_effective_target_cilkplus): Also
+	check that compiling with -fcilkplus does not give an error.
+	* c-c++-common/attr-simd-3.c: Require cilkplus effective target.
+
 2015-12-13  David Edelsohn  <dje.gcc@gmail.com>
 
 	* gcc.dg/graphite/pr42729.c: XFAIL AIX.
diff --git a/gcc/testsuite/c-c++-common/attr-simd-3.c b/gcc/testsuite/c-c++-common/attr-simd-3.c
index d61ba82de3c73f94d25338f44cc88ebc8f660f01..1970c67174b9391294eb514b4666e60230bf1a67 100644
--- a/gcc/testsuite/c-c++-common/attr-simd-3.c
+++ b/gcc/testsuite/c-c++-common/attr-simd-3.c
@@ -1,4 +1,5 @@
 /* { dg-do compile } */
+/* { dg-require-effective-target "cilkplus" } */
 /* { dg-options "-fcilkplus" } */
 /* { dg-prune-output "undeclared here \\(not in a function\\)|\[^\n\r\]* was not declared in this scope" } */
 
diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
index 8d28b235c27ee30c3248f93cb6df02da3d956128..4a79699ab0cb0883392b3f7456eb30060e928883 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -1432,7 +1432,12 @@ proc check_effective_target_cilkplus { } {
     if { [istarget avr-*-*] } {
 	return 0;
     }
-    return 1
+    return [ check_no_compiler_messages_nocache fcilkplus_available executable {
+	#ifdef __cplusplus
+	extern "C"
+	#endif
+	    int dummy;
+	} "-fcilkplus" ]
 }
 
 proc check_linker_plugin_available { } {