diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 2238dae00f7..d98ba983d4d 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2017-11-17  Segher Boessenkool  <segher@kernel.crashing.org>
+
+	* gcc.target/powerpc/altivec-macros.c: Include "-:" in the messages
+	matched for.
+
 2017-11-17  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/83017
diff --git a/gcc/testsuite/gcc.target/powerpc/altivec-macros.c b/gcc/testsuite/gcc.target/powerpc/altivec-macros.c
index 91bf120cf8c..e5a09308ea6 100644
--- a/gcc/testsuite/gcc.target/powerpc/altivec-macros.c
+++ b/gcc/testsuite/gcc.target/powerpc/altivec-macros.c
@@ -23,45 +23,45 @@ _Pragma ("__vector")
 
 #undef __vector
 #define __vector __new_vector
-/* { dg-message "location of the previous"  "prev __vector defn"  { target *-*-* } .-1 } */
+/* { dg-message "-:location of the previous"  "prev __vector defn"  { target *-*-* } .-1 } */
 
 #undef __pixel
 #define __pixel __new_pixel
-/* { dg-message "location of the previous"  "prev __pixel defn"   { target *-*-* } .-1 } */
+/* { dg-message "-:location of the previous"  "prev __pixel defn"   { target *-*-* } .-1 } */
 
 #undef __bool
 #define __bool __new_bool
-/* { dg-message "location of the previous"  "prev __bool defn"    { target *-*-* } .-1 } */
+/* { dg-message "-:location of the previous"  "prev __bool defn"    { target *-*-* } .-1 } */
 
 #undef vector
 #define vector new_vector
-/* { dg-message "location of the previous"  "prev vector defn"    { target *-*-* } .-1 } */
+/* { dg-message "-:location of the previous"  "prev vector defn"    { target *-*-* } .-1 } */
 
 #undef pixel
 #define pixel new_pixel
-/* { dg-message "location of the previous"  "prev pixel defn"     { target *-*-* } .-1 } */
+/* { dg-message "-:location of the previous"  "prev pixel defn"     { target *-*-* } .-1 } */
 
 #undef bool
 #define bool new_bool
-/* { dg-message "location of the previous"  "prev bool defn"      { target *-*-* } .-1 } */
+/* { dg-message "-:location of the previous"  "prev bool defn"      { target *-*-* } .-1 } */
 
 /* Re-definition of "unconditional" macros.  */
 /* Warnings should be generated as usual.  */
 
 #define __vector	__newer_vector
-/* { dg-warning "redefined" "__vector redefined"  { target *-*-* } .-1 } */
+/* { dg-warning "-:redefined" "__vector redefined"  { target *-*-* } .-1 } */
 
 #define __pixel		__newer_pixel
-/* { dg-warning "redefined" "__pixel redefined"   { target *-*-* } .-1 } */
+/* { dg-warning "-:redefined" "__pixel redefined"   { target *-*-* } .-1 } */
 
 #define __bool		__newer_bool
-/* { dg-warning "redefined" "__bool redefined"    { target *-*-* } .-1 } */
+/* { dg-warning "-:redefined" "__bool redefined"    { target *-*-* } .-1 } */
 
 #define vector		newer_vector
-/* { dg-warning "redefined" "vector redefined"    { target *-*-* } .-1 } */
+/* { dg-warning "-:redefined" "vector redefined"    { target *-*-* } .-1 } */
 
 #define pixel		newer_pixel
-/* { dg-warning "redefined" "pixel redefined"     { target *-*-* } .-1 } */
+/* { dg-warning "-:redefined" "pixel redefined"     { target *-*-* } .-1 } */
 
 #define bool		newer_bool
-/* { dg-warning "redefined" "bool redefined"      { target *-*-* } .-1 } */
+/* { dg-warning "-:redefined" "bool redefined"      { target *-*-* } .-1 } */