Index: ELF/Relocations.cpp
===================================================================
--- ELF/Relocations.cpp
+++ ELF/Relocations.cpp
@@ -676,8 +676,16 @@
   if (Config->UnresolvedSymbols == UnresolvedPolicy::Ignore && CanBeExternal)
     return false;
 
-  std::string Msg =
-      "undefined symbol: " + toString(Sym) + "\n>>> referenced by ";
+  std::string Visibility = " ";
+  if (Sym.Visibility == STV_INTERNAL)
+    Visibility = " internal ";
+  else if (Sym.Visibility == STV_HIDDEN)
+    Visibility = " hidden ";
+  else if (Sym.Visibility == STV_PROTECTED)
+    Visibility = " protected ";
+
+  std::string Msg = "undefined" + Visibility + "symbol: " + toString(Sym) +
+                    "\n>>> referenced by ";
 
   std::string Src = Sec.getSrcMsg(Sym, Offset);
   if (!Src.empty())
Index: test/ELF/executable-undefined-protected-ignoreall.s
===================================================================
--- test/ELF/executable-undefined-protected-ignoreall.s
+++ test/ELF/executable-undefined-protected-ignoreall.s
@@ -1,7 +1,7 @@
 # REQUIRES: x86
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
 # RUN: not ld.lld %t -o /dev/null --unresolved-symbols=ignore-all -pie 2>&1 | FileCheck %s
-# CHECK: error: undefined symbol: foo
+# CHECK: error: undefined protected symbol: foo
 
 .protected foo
 _start:
Index: test/ELF/hidden-shared-err.s
===================================================================
--- test/ELF/hidden-shared-err.s
+++ test/ELF/hidden-shared-err.s
@@ -11,7 +11,7 @@
 # RUN: not ld.lld %t.o %t3.o %t2.so -o %t 2>&1 | FileCheck %s
 # RUN: not ld.lld %t3.o %t.o %t2.so -o %t 2>&1 | FileCheck %s
 
-# CHECK: undefined symbol: foo
+# CHECK: undefined hidden symbol: foo
 
 .global _start
 _start:
Index: test/ELF/lto/setting-dso-local.ll
===================================================================
--- test/ELF/lto/setting-dso-local.ll
+++ test/ELF/lto/setting-dso-local.ll
@@ -2,7 +2,7 @@
 ; RUN: llvm-as %s -o %t1.o
 ; RUN: not ld.lld -o %t %t1.o 2>&1 | FileCheck %s
 
-; CHECK: undefined symbol: foobar
+; CHECK: undefined hidden symbol: foobar
 
 ; We used to crash setting foobar to non-dso_local
 
Index: test/ELF/undef-shared.s
===================================================================
--- test/ELF/undef-shared.s
+++ test/ELF/undef-shared.s
@@ -2,17 +2,17 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
 # RUN: not ld.lld %t.o -o /dev/null -shared 2>&1 | FileCheck %s
 
-# CHECK: error: undefined symbol: hidden
+# CHECK: error: undefined hidden symbol: hidden
 # CHECK: >>> referenced by {{.*}}:(.data+0x0)
 .global hidden
 .hidden hidden
 
-# CHECK: error: undefined symbol: internal
+# CHECK: error: undefined internal symbol: internal
 # CHECK: >>> referenced by {{.*}}:(.data+0x8)
 .global internal
 .internal internal
 
-# CHECK: error: undefined symbol: protected
+# CHECK: error: undefined protected symbol: protected
 # CHECK: >>> referenced by {{.*}}:(.data+0x10)
 .global protected
 .protected protected
Index: test/ELF/undef-shared2.s
===================================================================
--- test/ELF/undef-shared2.s
+++ test/ELF/undef-shared2.s
@@ -4,7 +4,7 @@
 # RUN: not ld.lld %t.o %t2.o -o %t.so -shared 2>&1 | FileCheck %s
 # RUN: not ld.lld %t2.o %t.o -o %t.so -shared 2>&1 | FileCheck %s
 
-# CHECK: error: undefined symbol: foo
+# CHECK: error: undefined protected symbol: foo
 
 .data
 .quad foo
Index: test/ELF/warn-unresolved-symbols-hidden.s
===================================================================
--- test/ELF/warn-unresolved-symbols-hidden.s
+++ test/ELF/warn-unresolved-symbols-hidden.s
@@ -3,8 +3,8 @@
 # RUN: not ld.lld -shared %t.o -o /dev/null -z defs --warn-unresolved-symbols 2>&1| FileCheck %s
 
 # CHECK: warning: undefined symbol: foo
-# CHECK: error: undefined symbol: bar
-# CHECK: error: undefined symbol: zed
+# CHECK: error: undefined hidden symbol: bar
+# CHECK: error: undefined protected symbol: zed
 
 .data
 .quad foo