--- a/gcc/testsuite/g++.dg/cpp0x/constexpr-cast.C	Fri Oct 27 22:46:09 2017 +0900
+++ b/gcc/testsuite/g++.dg/cpp0x/constexpr-cast.C	Thu Oct 25 07:37:49 2018 +0900
@@ -4,8 +4,8 @@
 
 int i;
 
-// The following is accepted due to bug 49171.
-constexpr void *q = reinterpret_cast<void*>(&i);    // { dg-error "" "bug c++/49171" { xfail *-*-* } }
+// The following was accepted due to bug 49171.
+constexpr void *q = reinterpret_cast<void*>(&i);    // { dg-error "not a constant expression" }
 
 constexpr void *r0 = reinterpret_cast<void*>(1);    // { dg-error "not a constant expression|reinterpret_cast from integer to pointer" }
 constexpr void *r1 = reinterpret_cast<void*>(sizeof 'x');  // { dg-error ".reinterpret_cast<void\\*>\\(1\[ul\]\*\\). is not a constant expression" }
@@ -21,4 +21,4 @@
 #endif
 }
 
-constexpr bool b = f<int>();   // { dg-error "not a constant expression" }
+constexpr bool b = f<int>();   // { dg-error "not a constant expression|in .constexpr. expansion of " }