diff --git a/lib/System/Path.cpp b/lib/System/Path.cpp
index 1c2b00e..dd0f275 100644
--- a/lib/System/Path.cpp
+++ b/lib/System/Path.cpp
@@ -26,8 +26,10 @@
 Path
 Path::GetLLVMConfigDir() {
   Path result;
+#ifdef LLVM_ETCDIR
   if (result.setDirectory(LLVM_ETCDIR))
     return result;
+#endif
   return GetLLVMDefaultConfigDir();
 }
 
diff --git a/lib/System/Win32/Path.cpp b/lib/System/Win32/Path.cpp
index 149b4a1..24cfc46 100644
--- a/lib/System/Win32/Path.cpp
+++ b/lib/System/Win32/Path.cpp
@@ -180,11 +180,6 @@
 }
 
 Path
-Path::GetLLVMConfigDir() {
-  return GetLLVMDefaultConfigDir();
-}
-
-Path
 Path::GetUserHomeDirectory() {
   const char* home = getenv("HOME");
   if (home) {
@@ -600,7 +595,7 @@
   dir.elideFile();
   std::string fname = this->getLast();
 
-  char* newName = alloca(MAX_PATH+1);
+  char newName[MAX_PATH + 1];
   if (!GetTempFileName(dir.c_str(), fname.c_str(), 0, newName))
     ThrowError("Cannot make unique filename for '" + path + "'");
 
diff --git a/lib/System/Win32/Path.inc b/lib/System/Win32/Path.inc
index 149b4a1..24cfc46 100644
--- a/lib/System/Win32/Path.inc
+++ b/lib/System/Win32/Path.inc
@@ -180,11 +180,6 @@
 }
 
 Path
-Path::GetLLVMConfigDir() {
-  return GetLLVMDefaultConfigDir();
-}
-
-Path
 Path::GetUserHomeDirectory() {
   const char* home = getenv("HOME");
   if (home) {
@@ -600,7 +595,7 @@
   dir.elideFile();
   std::string fname = this->getLast();
 
-  char* newName = alloca(MAX_PATH+1);
+  char newName[MAX_PATH + 1];
   if (!GetTempFileName(dir.c_str(), fname.c_str(), 0, newName))
     ThrowError("Cannot make unique filename for '" + path + "'");