diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 0231623db836..bdff0310e232 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,7 @@
+2018-11-07  Jonathan Wakely  <jwakely@redhat.com>
+
+	* config/abi/pre/gnu.ver: Fix patterns for size_t parameters.
+
 2018-11-06  Jonathan Wakely  <jwakely@redhat.com>
 
 	Implement std::pmr::unsynchronized_pool_resource
diff --git a/libstdc++-v3/config/abi/pre/gnu.ver b/libstdc++-v3/config/abi/pre/gnu.ver
index b55038b8845e..9d66f908e1ac 100644
--- a/libstdc++-v3/config/abi/pre/gnu.ver
+++ b/libstdc++-v3/config/abi/pre/gnu.ver
@@ -2061,8 +2061,8 @@ GLIBCXX_3.4.26 {
     _ZNSt3pmr28unsynchronized_pool_resourceC[12]ERKNS_12pool_optionsEPNS_15memory_resourceE;
     _ZNSt3pmr28unsynchronized_pool_resourceD[12]Ev;
     _ZNSt3pmr28unsynchronized_pool_resource7releaseEv;
-    _ZNSt3pmr28unsynchronized_pool_resource11do_allocateEmm;
-    _ZNSt3pmr28unsynchronized_pool_resource13do_deallocateEPvmm;
+    _ZNSt3pmr28unsynchronized_pool_resource11do_allocateE[jmy][jmy];
+    _ZNSt3pmr28unsynchronized_pool_resource13do_deallocateEPv[jmy][jmy];
 
 } GLIBCXX_3.4.25;