diff --git a/build.bat b/build.bat
index fc3da94..152e209 100644
--- a/build.bat
+++ b/build.bat
@@ -31,7 +31,7 @@ REM Zi enables debug data, Z7 combines the debug files into one.
 REM W4 warning level 4
 REM WX treat warnings as errors
 REM wd4201 ignore: nonstandard extension used: nameless struct/union
-set CompileFlags=-EHsc -GR- -Oi -MT -Z7 -W4 -WX -wd4201 -FC -Od
+set CompileFlags=-EHsc -GR- -Oi -MT -Z7 -W4 -WX -wd4201 -FC -O2 -wd4127
 
 REM Include directories
 set IncludeFlags=
diff --git a/dqn.h b/dqn.h
index 4e39392..4c16db4 100644
--- a/dqn.h
+++ b/dqn.h
@@ -6336,7 +6336,6 @@ DQN_FILE_SCOPE void DqnFile_Close(DqnFile *const file)
 
 #if defined(DQN_WIN32_PLATFORM)
 	DQN_COMPILE_ASSERT(sizeof(DWORD)  == sizeof(u32));
-	DQN_COMPILE_ASSERT(sizeof(size_t) >= sizeof(u64));
 #endif
 
 DQN_FILE_SCOPE bool DqnFile_GetFileSizeW(const wchar_t *const path, size_t *const size)
@@ -6346,6 +6345,7 @@ DQN_FILE_SCOPE bool DqnFile_GetFileSizeW(const wchar_t *const path, size_t *cons
 	WIN32_FILE_ATTRIBUTE_DATA attribData = {};
 	if (GetFileAttributesExW(path, GetFileExInfoStandard, &attribData))
 	{
+		// TODO(doyle): What if size_t is < Quad.part?
 		LARGE_INTEGER largeInt = {};
 		largeInt.HighPart      = attribData.nFileSizeHigh;
 		largeInt.LowPart       = attribData.nFileSizeLow;
diff --git a/dqn_unit_test.cpp b/dqn_unit_test.cpp
index cfde316..8f729bd 100644
--- a/dqn_unit_test.cpp
+++ b/dqn_unit_test.cpp
@@ -8,6 +8,11 @@
 	#define HANDMADE_MATH_NO_SSE
 #endif
 
+#if defined(__GNUC__)
+	#pragma GCC diagnostic push
+	#pragma GCC diagnostic ignored "-Wfree-nonheap-object"
+#endif
+
 #define DQN_IMPLEMENTATION
 #include "dqn.h"
 
@@ -341,9 +346,12 @@ void StringsTest()
 			DQN_ASSERT(DqnStr_Cmp(d, "18446744073709551615") == 0);
 #endif
 
-			char e[DQN_64BIT_NUM_MAX_STR_SIZE] = {};
-			Dqn_I64ToStr(SMALLEST_NUM, e, DQN_ARRAY_COUNT(e));
-			DQN_ASSERT_MSG(DqnStr_Cmp(e, "-9223372036854775808") == 0, "e: %s", e);
+			if (sizeof(size_t) == sizeof(u64))
+			{
+				char e[DQN_64BIT_NUM_MAX_STR_SIZE] = {};
+				Dqn_I64ToStr(SMALLEST_NUM, e, DQN_ARRAY_COUNT(e));
+				DQN_ASSERT_MSG(DqnStr_Cmp(e, "-9223372036854775808") == 0, "e: %s", e);
+			}
 
 			printf("StringsTest(): I64ToStr: Completed successfully\n");
 		}
@@ -1963,3 +1971,7 @@ int main(void)
 	return 0;
 }
 
+#if defined(__GNUC__)
+	#pragma GCC diagnostic pop
+#endif
+