diff --git a/Source/IO/FS/FS.cpp b/Source/IO/FS/FS.cpp
index 5e398186..fd2fbfa8 100644
--- a/Source/IO/FS/FS.cpp
+++ b/Source/IO/FS/FS.cpp
@@ -276,13 +276,14 @@ namespace Aurora::IO::FS
         int doubleSlash = 0;
         char prevC = '\0';
 
+
         //for (auto &character : str)
         for (auto itr = str.begin();
              itr != str.end();
-             )
+             itr++)
         {
-            auto &character = *itr;
             auto holding = *itr;
+            auto character = holding;
 
             if ((character == '\\') || (character == '/'))
             {
@@ -292,25 +293,24 @@ namespace Aurora::IO::FS
                 if (character == '\\' &&
                     prevC == '\\')
                 {
+                    *(itr - 1) = '\\';
                     itr = str.erase(itr);
                     doubleSlash--;
+                    continue;
                 }
                 else
                 {
-                    itr++;
+                    *itr = kPathSplitter;
                     doubleSlash++;
                 }
-                character = kPathSplitter;
             #else
-                itr++;
-                character = kPathSplitter;
+                *itr = kPathSplitter;
                 doubleSlash++;
             #endif
 
             }
             else
             {
-                itr++;
                 doubleSlash = 0;
             }
             
diff --git a/Source/IO/FS/FSPlatformDevices.Linux.cpp b/Source/IO/FS/FSPlatformDevices.Linux.cpp
index 5bf9f79c..24a59279 100644
--- a/Source/IO/FS/FSPlatformDevices.Linux.cpp
+++ b/Source/IO/FS/FSPlatformDevices.Linux.cpp
@@ -34,7 +34,7 @@ namespace Aurora::IO::FS
         AuString ret;
         ret.resize(4096);
 
-        auto count = readlink(path.c_str(), ret.data(), ret.size());
+        auto count = readlink(AuString(path).c_str(), ret.data(), ret.size());
         if (count <= 0)
         {
             return {};
@@ -47,7 +47,7 @@ namespace Aurora::IO::FS
         if (ret.size() && ret[0] != '/')
         {
             AuROString dir;
-            AuString path2 = path;
+            AuString path2(path);
             path2 = AuReplaceAll(path2, "\\", "\\\\");
             if (GoUpToSeparator(dir, path2))
             {
@@ -81,18 +81,19 @@ namespace Aurora::IO::FS
         try
         {
             // TODO: use roxtl het lookup instead of allocating AuString
-            auto itr = gCachedStat.find(AuString(path));
+            AuString copy(path);
+            auto itr = gCachedStat.find(copy);
             if (itr == gCachedStat.end())
             {
-                int err = ::stat(path.c_str(), pstat);
+                int err = ::stat(copy.c_str(), pstat);
                 if (-1 == err)
                 {
-                    gCachedStat[path] = {};
+                    gCachedStat[copy] = {};
                     errno = 0;
                 }
                 else
                 {
-                    gCachedStat[path] = *pstat;
+                    gCachedStat[copy] = *pstat;
                 }
                 return err;
             }
@@ -135,7 +136,7 @@ namespace Aurora::IO::FS
             return {};
         }
 
-        auto dev = "/dev/" + path.substr(pos + 1);
+        auto dev = AuString("/dev/") + AuString(path.substr(pos + 1));
         if (!BlockExists(dev))
         {
             return {};
@@ -296,7 +297,7 @@ namespace Aurora::IO::FS
 
             if (uCount == 2)
             {
-                auto guess = "/sys/block/" + path.substr(5);
+                auto guess = AuString("/sys/block/") + AuString(path.substr(5));
                 if (AuFS::DirExists(guess))
                 {
                     return guess;
@@ -313,7 +314,7 @@ namespace Aurora::IO::FS
                  AuStartsWith(path, "/sys/block/"))
         {
             // dunno. have fun
-            return path;
+            return AuString(path);
         }
         else
         {
diff --git a/Source/IO/FS/FSPlatformDevices.NT.cpp b/Source/IO/FS/FSPlatformDevices.NT.cpp
index 9d07fd19..41fc3fef 100644
--- a/Source/IO/FS/FSPlatformDevices.NT.cpp
+++ b/Source/IO/FS/FSPlatformDevices.NT.cpp
@@ -225,7 +225,7 @@ namespace Aurora::IO::FS
         }
     }
 
-    AUKN_SYM AuUInt32 GetLogicalSectorSizeFromPath(const AuString &path)
+    AUKN_SYM AuUInt32 GetLogicalSectorSizeFromPath(const AuROString &path)
     {
         // TODO: ioctl BLKSSZGET under linux or GetPhysicalSectorSizeFromPath(path)
         
diff --git a/Source/IO/FS/Resources.cpp b/Source/IO/FS/Resources.cpp
index b7c7bdee..f0178fa3 100644
--- a/Source/IO/FS/Resources.cpp
+++ b/Source/IO/FS/Resources.cpp
@@ -85,7 +85,7 @@ namespace Aurora::IO::FS
                 AuString tempPath;
                 if (Process::GetWorkingDirectory(tempPath))
                 {
-                    tempPath += "/" + fileName;
+                    tempPath += "/" + AuString(fileName);
                     if (FileExists(tempPath))
                     {
                         path = tempPath;
diff --git a/Source/Process/AuProcess.cpp b/Source/Process/AuProcess.cpp
index e71251cf..b6575d1e 100644
--- a/Source/Process/AuProcess.cpp
+++ b/Source/Process/AuProcess.cpp
@@ -337,7 +337,7 @@ namespace Aurora::Process
             return {};
         }
     #else
-        auto handle = dlopen(path.c_str(), RTLD_DEEPBIND);
+        auto handle = dlopen(AuString(path).c_str(), RTLD_DEEPBIND);
         if (handle == nullptr)
         {
             SysPushErrorNested("Could't link dynamic library {}", path);
@@ -674,8 +674,8 @@ namespace Aurora::Process
 
             if (request.version.size())
             {
-                au += "." + request.version;
-                base += "." + request.version;
+                au += AuString(".") + AuString(request.version);
+                base += AuString(".") + AuString(request.version);
             }
 
             if (ext && Build::kIsNtDerived)
diff --git a/Source/Process/AuProcessMap.Linux.cpp b/Source/Process/AuProcessMap.Linux.cpp
index eb2d2848..4cf680c0 100644
--- a/Source/Process/AuProcessMap.Linux.cpp
+++ b/Source/Process/AuProcessMap.Linux.cpp
@@ -138,7 +138,7 @@ namespace Aurora::Process
                 name = kSectionNameFile;
             }
 
-            AuOptional<const AuString &> optProcessPath;
+            AuOptional<AuROString> optProcessPath;
             if (AuCmdLine::gHackLoader.size())
             {
                 optProcessPath = GetProcessFullPath();