Kill the LLVM global lock.

[oota-llvm.git] / include / llvm / Support / DynamicLibrary.h

diff --git a/include/llvm/Support/DynamicLibrary.h b/include/llvm/Support/DynamicLibrary.h
index 288936bc0b9bd22c278ebec29c1965754e4a827f..de47be62a795bc287d4417bcd42c127f387473a5 100644 (file)
--- a/include/llvm/Support/DynamicLibrary.h
+++ b/include/llvm/Support/DynamicLibrary.h
@@ -11,12 +11,15 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef LLVM_SYSTEM_DYNAMIC_LIBRARY_H
-#define LLVM_SYSTEM_DYNAMIC_LIBRARY_H
+#ifndef LLVM_SYSTEM_DYNAMICLIBRARY_H
+#define LLVM_SYSTEM_DYNAMICLIBRARY_H
 
 #include <string>
 
 namespace llvm {
+
+class StringRef;
+
 namespace sys {
 
   /// This class provides a portable interface to dynamic libraries which also
@@ -62,7 +65,7 @@ namespace sys {
     /// It is safe to call this function multiple times for the same library.
     /// @brief Open a dynamic library permanently.
     static DynamicLibrary getPermanentLibrary(const char *filename,
-                                              std::string *errMsg = 0);
+                                              std::string *errMsg = nullptr);
 
     /// This function permanently loads the dynamic library at the given path.
     /// Use this instead of getPermanentLibrary() when you won't need to get
@@ -70,7 +73,7 @@ namespace sys {
     ///
     /// It is safe to call this function multiple times for the same library.
     static bool LoadLibraryPermanently(const char *Filename,
-                                       std::string *ErrMsg = 0) {
+                                       std::string *ErrMsg = nullptr) {
       return !getPermanentLibrary(Filename, ErrMsg).isValid();
     }