diff --git a/runtime/vm/compiler/backend/range_analysis.cc b/runtime/vm/compiler/backend/range_analysis.cc
index 71fd853..8122bd9 100644
--- a/runtime/vm/compiler/backend/range_analysis.cc
+++ b/runtime/vm/compiler/backend/range_analysis.cc
@@ -2296,7 +2296,7 @@
     *result_min = RangeBoundary::FromConstant(0);
   } else {
     *result_min =
-        RangeBoundary::FromConstant(-(static_cast<int64_t>(1) << bitsize));
+        RangeBoundary::FromConstant(-(static_cast<uint64_t>(1) << bitsize));
   }
 
   *result_max =
diff --git a/tests/co19_2/co19_2-kernel.status b/tests/co19_2/co19_2-kernel.status
index 662a94c..7ffb4fa 100644
--- a/tests/co19_2/co19_2-kernel.status
+++ b/tests/co19_2/co19_2-kernel.status
@@ -569,6 +569,7 @@
 LibTest/io/Stdout/add_A02_t07: RuntimeError
 LibTest/io/WebSocket/connect_A01_t01: RuntimeError
 LibTest/io/WebSocket/connect_A01_t02: RuntimeError
+LibTest/isolate/Isolate/pause_A01_t01: Timeout, Pass
 LibTest/isolate/Isolate/pause_A01_t02: Timeout, Pass
 LibTest/isolate/Isolate/ping_A03_t01: RuntimeError, Pass
 LibTest/isolate/Isolate/ping_A03_t02: RuntimeError, Pass