Index: lib/StaticAnalyzer/Core/SVals.cpp
===================================================================
--- lib/StaticAnalyzer/Core/SVals.cpp
+++ lib/StaticAnalyzer/Core/SVals.cpp
@@ -300,13 +300,9 @@
 void NonLoc::dumpToStream(raw_ostream &os) const {
   switch (getSubKind()) {
     case nonloc::ConcreteIntKind: {
-      const nonloc::ConcreteInt& C = castAs<nonloc::ConcreteInt>();
-      if (C.getValue().isUnsigned())
-        os << C.getValue().getZExtValue();
-      else
-        os << C.getValue().getSExtValue();
-      os << ' ' << (C.getValue().isUnsigned() ? 'U' : 'S')
-         << C.getValue().getBitWidth() << 'b';
+      const auto &Value = castAs<nonloc::ConcreteInt>().getValue();
+      os << Value << ' ' << (Value.isSigned() ? 'S' : 'U')
+         << Value.getBitWidth() << 'b';
       break;
     }
     case nonloc::SymbolValKind:
Index: test/Analysis/sval-dump-int128.c
===================================================================
--- /dev/null
+++ test/Analysis/sval-dump-int128.c
@@ -0,0 +1,7 @@
+// RUN: %clang_analyze_cc1 -analyzer-checker=debug.ExprInspection %s -verify
+
+void clang_analyzer_dump(unsigned __int128 x);
+
+void testDumpInt128() {
+  clang_analyzer_dump((unsigned __int128)5 << 64); // expected-warning{{92233720368547758080 U128b}}
+}