diff --git a/lld/test/wasm/export-empty.test b/lld/test/wasm/export-empty.test
new file mode 100644
--- /dev/null
+++ b/lld/test/wasm/export-empty.test
@@ -0,0 +1,4 @@
+RUN: llc -filetype=obj %p/Inputs/start.ll -o %t.o
+RUN: not wasm-ld --export "" %t.o -o %t.wasm 2>&1 | FileCheck --match-full-lines %s
+
+CHECK: wasm-ld: error: symbol exported via --export not found: 
diff --git a/llvm/include/llvm/ADT/StringSet.h b/llvm/include/llvm/ADT/StringSet.h
--- a/llvm/include/llvm/ADT/StringSet.h
+++ b/llvm/include/llvm/ADT/StringSet.h
@@ -36,7 +36,6 @@
     explicit StringSet(AllocatorTy A) : base(A) {}
 
     std::pair<typename base::iterator, bool> insert(StringRef Key) {
-      assert(!Key.empty());
       return base::insert(std::make_pair(Key, None));
     }
 
diff --git a/llvm/unittests/ADT/StringSetTest.cpp b/llvm/unittests/ADT/StringSetTest.cpp
--- a/llvm/unittests/ADT/StringSetTest.cpp
+++ b/llvm/unittests/ADT/StringSetTest.cpp
@@ -41,4 +41,16 @@
   Element->Destroy();
 }
 
+TEST_F(StringSetTest, EmptyString) {
+  // Verify that the empty string can by successfully inserted
+  StringSet<> Set;
+  size_t Count = Set.count("");
+  EXPECT_EQ(Count, 0UL);
+
+  Set.insert("");
+  Count = Set.count("");
+  EXPECT_EQ(Count, 1UL);
+}
+
+
 } // end anonymous namespace
diff --git a/llvm/unittests/Support/StringPool.cpp b/llvm/unittests/Support/StringPool.cpp
--- a/llvm/unittests/Support/StringPool.cpp
+++ b/llvm/unittests/Support/StringPool.cpp
@@ -1,4 +1,4 @@
-//===- llvm/unittest/Support/StringPoiil.cpp - StringPool tests -----------===//
+//===- llvm/unittest/Support/StringPool.cpp - StringPool tests ------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.