Index: ELF/Driver.cpp
===================================================================
--- ELF/Driver.cpp
+++ ELF/Driver.cpp
@@ -1059,6 +1059,11 @@
   if (errorCount())
     return;
 
+  // We want to declare linker script's symbols early,
+  // so that we can version them.
+  // They also might be exported if referenced by DSOs.
+  Script->declareSymbols();
+
   // Handle undefined symbols in DSOs.
   if (!Config->Shared)
     Symtab->scanShlibUndefined<ELFT>();
@@ -1076,10 +1081,6 @@
   if (!Config->Relocatable)
     addReservedSymbols();
 
-  // We want to declare linker script's symbols early,
-  // so that we can version them.
-  Script->declareSymbols();
-
   // Apply version scripts.
   Symtab->scanVersionScript();
 
Index: ELF/InputFiles.h
===================================================================
--- ELF/InputFiles.h
+++ ELF/InputFiles.h
@@ -341,6 +341,7 @@
 extern std::vector<BitcodeFile *> BitcodeFiles;
 extern std::vector<InputFile *> ObjectFiles;
 extern std::vector<InputFile *> SharedFiles;
+extern llvm::DenseSet<StringRef> UndefsInShlibs;
 
 } // namespace elf
 } // namespace lld
Index: ELF/InputFiles.cpp
===================================================================
--- ELF/InputFiles.cpp
+++ ELF/InputFiles.cpp
@@ -42,6 +42,7 @@
 std::vector<BitcodeFile *> elf::BitcodeFiles;
 std::vector<InputFile *> elf::ObjectFiles;
 std::vector<InputFile *> elf::SharedFiles;
+llvm::DenseSet<StringRef> elf::UndefsInShlibs;
 
 TarWriter *elf::Tar;
 
@@ -853,6 +854,7 @@
     StringRef Name = CHECK(Sym.getName(this->StringTable), this);
     if (Sym.isUndefined()) {
       Undefs.push_back(Name);
+      UndefsInShlibs.insert(Name);
       continue;
     }
 
Index: ELF/LinkerScript.cpp
===================================================================
--- ELF/LinkerScript.cpp
+++ ELF/LinkerScript.cpp
@@ -127,9 +127,12 @@
   // If a symbol was in PROVIDE(), we need to define it only
   // when it is a referenced undefined symbol.
   Symbol *B = Symtab->find(Cmd->Name);
-  if (!B || B->isDefined())
-    return false;
-  return true;
+  if (B && !B->isDefined())
+    return true;
+  // It might also be referenced by a DSO.
+  if (UndefsInShlibs.find(Cmd->Name) != UndefsInShlibs.end())
+    return true;
+  return false;
 }
 
 // This function is called from processSectionCommands,
Index: test/ELF/linkerscript/Inputs/provide-shared2.s
===================================================================
--- /dev/null
+++ test/ELF/linkerscript/Inputs/provide-shared2.s
@@ -0,0 +1,3 @@
+.global foo
+.data
+.dc.a foo
Index: test/ELF/linkerscript/provide-shared2.s
===================================================================
--- /dev/null
+++ test/ELF/linkerscript/provide-shared2.s
@@ -0,0 +1,13 @@
+# REQUIRES: x86
+# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
+# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %p/Inputs/provide-shared2.s -o %t2.o
+# RUN: ld.lld %t2.o -o %t2.so -shared
+# RUN: echo "SECTIONS { . = . + SIZEOF_HEADERS; PROVIDE(foo = 42); }" > %t.script
+# RUN: ld.lld -o %t --script %t.script %t.o %t2.so
+# RUN: llvm-readelf --dyn-symbols %t | FileCheck  %s
+
+# CHECK: 1 1: 000000000000002a 0 NOTYPE GLOBAL DEFAULT ABS foo@
+
+.global _start
+_start:
+        nop