diff --git a/README.md b/README.md
index 3270d6e..716b262 100644
--- a/README.md
+++ b/README.md
@@ -87,11 +87,11 @@ Demo: [DelayHook.c](https://github.com/KNSoft/KNSoft.SlimDetours/blob/main/Sourc
 
 ## Compatibility
 
-Project building: only support for the latest MSVC generation tools and SDKs is considered, but it is generally more widely backward compatible.
+Project building: support for the latest MSVC generation tools and SDKs is mainly considered, and it is generally more widely backward compatible. GCC compatible and can be built with [ReactOS](https://github.com/reactos/reactos).
 
-Artifact integration: it is widely backward compatible with MSVC generation tools (support for VS2015 is known), and different compilation configurations (e.g., `/MD`, `/MT`).
+Artifact integration: widely compatible with MSVC generation tools (support for VS2015 is known), and different compilation configurations (e.g., `/MD`, `/MT`).
 
-Runtime environment: NT6 or above OS, x86/x64/ARM64 platform.
+Runtime environment: NT5 or above OS, x86/x64/ARM64 platform.
 
 > [!CAUTION]
 > In beta stage, should be used with caution.
diff --git a/README.zh-CN.md b/README.zh-CN.md
index eb38aaf..73fab07 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -87,11 +87,11 @@ SlimDetoursDelayAttach((PVOID*)&g_pfnFuncXxx,
 
 ## 兼容性
 
-项目构建：仅考虑对最新MSVC生成工具及SDK的支持，但一般也能较广泛地向下兼容。
+项目构建：主要考虑对最新MSVC生成工具及SDK的支持，同时一般也能较广泛地向下兼容。兼容GCC并可随[ReactOS](https://github.com/reactos/reactos)一同构建。
 
-制品集成：能较广泛地向下兼容MSVC生成工具（已知支持VS2015），以及不同编译配置（如`/MD`、`/MT`）。
+制品集成：广泛地兼容MSVC生成工具（已知支持VS2015），以及不同编译配置（如`/MD`、`/MT`）。
 
-运行环境：NT6及以上操作系统，x86/x64/ARM64平台。
+运行环境：NT5及以上操作系统，x86/x64/ARM64平台。
 
 > [!CAUTION]
 > 处于beta阶段，应小心使用。
diff --git a/Source/SlimDetours/Disassembler.c b/Source/SlimDetours/Disassembler.c
index a423b85..18df882 100644
--- a/Source/SlimDetours/Disassembler.c
+++ b/Source/SlimDetours/Disassembler.c
@@ -159,27 +159,27 @@ typedef struct _COPYENTRY
     COPYFUNC    pfCopy;             // Function pointer.
 } COPYENTRY, *PCOPYENTRY;
 
-PBYTE CopyBytes(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
-PBYTE CopyBytesPrefix(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
-PBYTE CopyBytesSegment(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
-PBYTE CopyBytesRax(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
-PBYTE CopyBytesJump(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
-PBYTE Invalid(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
-PBYTE Copy0F(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
-PBYTE Copy0F78(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
-PBYTE Copy0F00(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
-PBYTE Copy0FB8(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
-PBYTE Copy66(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
-PBYTE Copy67(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
-PBYTE CopyF2(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
-PBYTE CopyF3(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
-PBYTE CopyF6(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
-PBYTE CopyF7(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
-PBYTE CopyFF(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
-PBYTE CopyVex3(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
-PBYTE CopyVex2(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
-PBYTE CopyEvex(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
-PBYTE CopyXop(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE CopyBytes(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE CopyBytesPrefix(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE CopyBytesSegment(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE CopyBytesRax(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE CopyBytesJump(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE Invalid(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE Copy0F(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE Copy0F78(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE Copy0F00(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE Copy0FB8(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE Copy66(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE Copy67(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE CopyF2(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE CopyF3(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE CopyF6(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE CopyF7(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE CopyFF(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE CopyVex3(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE CopyVex2(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE CopyEvex(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
+static PBYTE CopyXop(_In_ PDETOUR_DISASM pDisasm, _In_opt_ REFCOPYENTRY pEntry, _In_ PBYTE pbDst, _In_ PBYTE pbSrc);
 
 ///////////////////////////////////////////////////////// Disassembler Tables.
 //
@@ -954,10 +954,10 @@ static const BYTE g_rceCopyTable0F[] =
     /* FF */ eENTRY_Invalid,                        // _FF
 };
 
-_STATIC_ASSERT(ARRAYSIZE(g_rbModRm) == 256 &&
-               ARRAYSIZE(g_rceCopyMap) == eENTRY_Invalid + 1 &&
-               ARRAYSIZE(g_rceCopyTable) == 256 &&
-               ARRAYSIZE(g_rceCopyTable0F) == 256);
+_STATIC_ASSERT(_countof(g_rbModRm) == 256 &&
+               _countof(g_rceCopyMap) == eENTRY_Invalid + 1 &&
+               _countof(g_rceCopyTable) == 256 &&
+               _countof(g_rceCopyTable0F) == 256);
 
 /////////////////////////////////////////////////////////// Disassembler Code.
 //
diff --git a/Source/SlimDetours/Instruction.c b/Source/SlimDetours/Instruction.c
index 287540a..8fa9f17 100644
--- a/Source/SlimDetours/Instruction.c
+++ b/Source/SlimDetours/Instruction.c
@@ -117,8 +117,8 @@ detour_gen_jmp_immediate(
 {
     PBYTE pbJmpSrc = pbCode + 5;
     *pbCode++ = 0xe9;   // jmp +imm32
-    *((INT32*)pbCode)++ = (INT32)(pbJmpVal - pbJmpSrc);
-    return pbCode;
+    *((INT32*)pbCode) = (INT32)(pbJmpVal - pbJmpSrc);
+    return pbCode + sizeof(INT32);
 }
 
 _Ret_notnull_
@@ -133,11 +133,11 @@ detour_gen_jmp_indirect(
     *pbCode++ = 0xff;   // jmp [+imm32]
     *pbCode++ = 0x25;
 #if defined(_AMD64_)
-    *((INT32*)pbCode)++ = (INT32)((PBYTE)ppbJmpVal - pbJmpSrc);
+    *((INT32*)pbCode) = (INT32)((PBYTE)ppbJmpVal - pbJmpSrc);
 #else
-    *((INT32*)pbCode)++ = (INT32)((PBYTE)ppbJmpVal);
+    *((INT32*)pbCode) = (INT32)((PBYTE)ppbJmpVal);
 #endif
-    return pbCode;
+    return pbCode + sizeof(INT32);
 }
 
 _Ret_notnull_
diff --git a/Source/SlimDetours/SlimDetours.h b/Source/SlimDetours/SlimDetours.h
index 02bd39c..602798d 100644
--- a/Source/SlimDetours/SlimDetours.h
+++ b/Source/SlimDetours/SlimDetours.h
@@ -27,7 +27,7 @@ extern "C" {
 #define DETOUR_INSTRUCTION_TARGET_NONE ((PVOID)0)
 #define DETOUR_INSTRUCTION_TARGET_DYNAMIC ((PVOID)(LONG_PTR)-1)
 
-#pragma region APIs
+/* APIs */
 
 HRESULT
 NTAPI
@@ -107,9 +107,7 @@ SlimDetoursCopyInstruction(
 }
 #endif
 
-#pragma endregion
-
-#pragma region Type - safe overloads for C++
+/* Type - safe overloads for C++ */
 
 #if __cplusplus >= 201103L || _MSVC_LANG >= 201103L
 #include <type_traits>
@@ -165,5 +163,3 @@ SlimDetoursDelayAttach(
 #endif /* (NTDDI_VERSION >= NTDDI_WIN6) */
 
 #endif // __cplusplus >= 201103L || _MSVC_LANG >= 201103L
-
-#pragma endregion
diff --git a/Source/SlimDetours/Trampoline.c b/Source/SlimDetours/Trampoline.c
index f3e7b07..aad5de0 100644
--- a/Source/SlimDetours/Trampoline.c
+++ b/Source/SlimDetours/Trampoline.c
@@ -291,7 +291,7 @@ detour_alloc_trampoline(
     PDETOUR_TRAMPOLINE pLo;
     PDETOUR_TRAMPOLINE pHi;
 
-    detour_find_jmp_bounds(pbTarget, &pLo, &pHi);
+    detour_find_jmp_bounds(pbTarget, (PVOID*)&pLo, (PVOID*)&pHi);
 
     PDETOUR_TRAMPOLINE pTrampoline = NULL;
 
diff --git a/Source/SlimDetours/Transaction.c b/Source/SlimDetours/Transaction.c
index ecb2c1c..2ad668b 100644
--- a/Source/SlimDetours/Transaction.c
+++ b/Source/SlimDetours/Transaction.c
@@ -85,9 +85,13 @@ SlimDetoursTransactionBegin(VOID)
     return HRESULT_FROM_NT(STATUS_SUCCESS);
 
 fail:
+#ifdef _MSC_VER
 #pragma warning(disable: __WARNING_INTERLOCKED_ACCESS)
+#endif
     s_nPendingThreadId = 0;
+#ifdef _MSC_VER
 #pragma warning(default: __WARNING_INTERLOCKED_ACCESS)
+#endif
     return HRESULT_FROM_NT(Status);
 }