4 files changed, 16 insertions, 12 deletions
diff --git a/lld/ELF/OutputSections.cpp b/lld/ELF/OutputSections.cpp
index 4636b9990b0..4be8447391b 100644
--- a/lld/ELF/OutputSections.cpp
+++ b/lld/ELF/OutputSections.cpp
@@ -11,6 +11,7 @@
 #include "Config.h"
 #include "EhFrame.h"
 #include "LinkerScript.h"
+#include "Strings.h"
 #include "SymbolTable.h"
 #include "Target.h"
 #include "lld/Core/Parallel.h"
@@ -29,18 +30,6 @@ using namespace llvm::ELF;
 using namespace lld;
 using namespace lld::elf;
 
-static bool isAlpha(char C) {
-  return ('a' <= C && C <= 'z') || ('A' <= C && C <= 'Z') || C == '_';
-}
-
-static bool isAlnum(char C) { return isAlpha(C) || ('0' <= C && C <= '9'); }
-
-// Returns true if S is valid as a C language identifier.
-bool elf::isValidCIdentifier(StringRef S) {
-  return !S.empty() && isAlpha(S[0]) &&
-         std::all_of(S.begin() + 1, S.end(), isAlnum);
-}
-
 template <class ELFT>
 OutputSectionBase<ELFT>::OutputSectionBase(StringRef Name, uint32_t Type,
                                            uintX_t Flags)
diff --git a/lld/ELF/Strings.cpp b/lld/ELF/Strings.cpp
index a7aecf09035..21d7f428e85 100644
--- a/lld/ELF/Strings.cpp
+++ b/lld/ELF/Strings.cpp
@@ -11,6 +11,7 @@
 #include "Error.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/Twine.h"
+#include <algorithm>
 
 using namespace llvm;
 using namespace lld;
@@ -55,3 +56,15 @@ std::vector<uint8_t> elf::parseHex(StringRef S) {
   }
   return Hex;
 }
+
+static bool isAlpha(char C) {
+  return ('a' <= C && C <= 'z') || ('A' <= C && C <= 'Z') || C == '_';
+}
+
+static bool isAlnum(char C) { return isAlpha(C) || ('0' <= C && C <= '9'); }
+
+// Returns true if S is valid as a C language identifier.
+bool elf::isValidCIdentifier(StringRef S) {
+  return !S.empty() && isAlpha(S[0]) &&
+         std::all_of(S.begin() + 1, S.end(), isAlnum);
+}
diff --git a/lld/ELF/Strings.h b/lld/ELF/Strings.h
index 1930a0aab10..002e8c2b843 100644
--- a/lld/ELF/Strings.h
+++ b/lld/ELF/Strings.h
@@ -17,6 +17,7 @@ namespace lld {
 namespace elf {
 bool globMatch(StringRef S, StringRef T);
 std::vector<uint8_t> parseHex(StringRef S);
+bool isValidCIdentifier(StringRef S);
 }
 }
 
diff --git a/lld/ELF/Writer.cpp b/lld/ELF/Writer.cpp
index 849a67f03ae..323a791c3de 100644
--- a/lld/ELF/Writer.cpp
+++ b/lld/ELF/Writer.cpp
@@ -12,6 +12,7 @@
 #include "LinkerScript.h"
 #include "OutputSections.h"
 #include "Relocations.h"
+#include "Strings.h"
 #include "SymbolTable.h"
 #include "Target.h"