7 files changed, 37 insertions, 13 deletions
diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt
index d120c8d3d..78c3bfb3b 100644
--- a/src/common/CMakeLists.txt
+++ b/src/common/CMakeLists.txt
@@ -110,6 +110,7 @@ add_library(common STATIC
     common_funcs.h
     common_paths.h
     common_types.h
+    concepts.h
     dynamic_library.cpp
     dynamic_library.h
     fiber.cpp
diff --git a/src/common/common_paths.h b/src/common/common_paths.h
index 076752d3b..3c593d5f6 100644
--- a/src/common/common_paths.h
+++ b/src/common/common_paths.h
@@ -35,6 +35,7 @@
 #define KEYS_DIR "keys"
 #define LOAD_DIR "load"
 #define DUMP_DIR "dump"
+#define SCREENSHOTS_DIR "screenshots"
 #define SHADER_DIR "shader"
 #define LOG_DIR "log"
 
diff --git a/src/common/concepts.h b/src/common/concepts.h
new file mode 100644
index 000000000..db5fb373d
--- /dev/null
+++ b/src/common/concepts.h
@@ -0,0 +1,32 @@
+// Copyright 2020 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+namespace Common {
+
+#include <type_traits>
+
+// Check if type is like an STL container
+template <typename T>
+concept IsSTLContainer = requires(T t) {
+    typename T::value_type;
+    typename T::iterator;
+    typename T::const_iterator;
+    // TODO(ogniK): Replace below is std::same_as<void> when MSVC supports it.
+    t.begin();
+    t.end();
+    t.cbegin();
+    t.cend();
+    t.data();
+    t.size();
+};
+
+// Check if type T is derived from T2
+template <typename T, typename T2>
+concept IsBaseOf = requires {
+    std::is_base_of_v<T, T2>;
+};
+
+} // namespace Common
diff --git a/src/common/file_util.cpp b/src/common/file_util.cpp
index 45b750e1e..4ede9f72c 100644
--- a/src/common/file_util.cpp
+++ b/src/common/file_util.cpp
@@ -695,6 +695,7 @@ const std::string& GetUserPath(UserPath path, const std::string& new_path) {
         paths.emplace(UserPath::NANDDir, user_path + NAND_DIR DIR_SEP);
         paths.emplace(UserPath::LoadDir, user_path + LOAD_DIR DIR_SEP);
         paths.emplace(UserPath::DumpDir, user_path + DUMP_DIR DIR_SEP);
+        paths.emplace(UserPath::ScreenshotsDir, user_path + SCREENSHOTS_DIR DIR_SEP);
         paths.emplace(UserPath::ShaderDir, user_path + SHADER_DIR DIR_SEP);
         paths.emplace(UserPath::SysDataDir, user_path + SYSDATA_DIR DIR_SEP);
         paths.emplace(UserPath::KeysDir, user_path + KEYS_DIR DIR_SEP);
diff --git a/src/common/file_util.h b/src/common/file_util.h
index f7a0c33fa..187b93161 100644
--- a/src/common/file_util.h
+++ b/src/common/file_util.h
@@ -32,6 +32,7 @@ enum class UserPath {
     SDMCDir,
     LoadDir,
     DumpDir,
+    ScreenshotsDir,
     ShaderDir,
     SysDataDir,
     UserDir,
diff --git a/src/common/string_util.h b/src/common/string_util.h
index 583fd05e6..023dff5dc 100644
--- a/src/common/string_util.h
+++ b/src/common/string_util.h
@@ -74,16 +74,4 @@ std::string StringFromFixedZeroTerminatedBuffer(const char* buffer, std::size_t
 std::u16string UTF16StringFromFixedZeroTerminatedBuffer(std::u16string_view buffer,
                                                         std::size_t max_len);
 
-/**
- * Attempts to trim an arbitrary prefix from `path`, leaving only the part starting at `root`. It's
- * intended to be used to strip a system-specific build directory from the `__FILE__` macro,
- * leaving only the path relative to the sources root.
- *
- * @param path The input file path as a null-terminated string
- * @param root The name of the root source directory as a null-terminated string. Path up to and
- *             including the last occurrence of this name will be stripped
- * @return A pointer to the same string passed as `path`, but starting at the trimmed portion
- */
-const char* TrimSourcePath(const char* path, const char* root = "src");
-
 } // namespace Common
diff --git a/src/common/virtual_buffer.cpp b/src/common/virtual_buffer.cpp
index b426f4747..be5b67752 100644
--- a/src/common/virtual_buffer.cpp
+++ b/src/common/virtual_buffer.cpp
@@ -38,7 +38,7 @@ void* AllocateMemoryPages(std::size_t size) {
     return base;
 }
 
-void FreeMemoryPages(void* base, std::size_t size) {
+void FreeMemoryPages(void* base, [[maybe_unused]] std::size_t size) {
     if (!base) {
         return;
     }