Validate privileged code relationships

- Work towards improving non-optimized build support
- Introduce MODE=zero which is -O0 without ASAN/UBSAN
- Use system GCC when ~/.cosmo.mk has USE_SYSTEM_TOOLCHAIN=1
- Have package.com check .privileged code doesn't call non-privileged

libc/nt/thunk/process.inc

@@ -1,10 +1,10 @@
 #define GetEnvironmentVariable(...) __imp_GetEnvironmentVariableW(__VA_ARGS__)
-extern typeof(GetEnvironmentVariable) *const
-    __imp_GetEnvironmentVariableW __msabi;
+extern typeof(GetEnvironmentVariable) *const __imp_GetEnvironmentVariableW
+    __msabi;
 
 #define SetEnvironmentVariable(...) __imp_SetEnvironmentVariableW(__VA_ARGS__)
-extern typeof(SetEnvironmentVariable) *const
-    __imp_SetEnvironmentVariableW __msabi;
+extern typeof(SetEnvironmentVariable) *const __imp_SetEnvironmentVariableW
+    __msabi;
 
 #define GetPriorityClass(...) __imp_GetPriorityClass(__VA_ARGS__)
 extern typeof(GetPriorityClass) *const __imp_GetPriorityClass __msabi;
@@ -17,3 +17,4 @@ extern typeof(GetCurrentProcessId) *const __imp_GetCurrentProcessId __msabi;
 
 extern typeof(FormatMessage) *const __imp_FormatMessageW __msabi;
 extern typeof(SetLastError) *const __imp_SetLastError __msabi;
+extern typeof(FormatMessage) *const __imp_FormatMessage __msabi;

libc/nt/thunk/runtime.inc

@@ -1,13 +1,13 @@
 #define FreeEnvironmentStrings(...) __imp_FreeEnvironmentStringsW(__VA_ARGS__)
-extern typeof(FreeEnvironmentStrings) *const
-    __imp_FreeEnvironmentStringsW __msabi;
+extern typeof(FreeEnvironmentStrings) *const __imp_FreeEnvironmentStringsW
+    __msabi;
 
 #define GetCommandLine(...) __imp_GetCommandLineW(__VA_ARGS__)
 extern typeof(GetCommandLine) *const __imp_GetCommandLineW __msabi;
 
 #define GetEnvironmentStrings(...) __imp_GetEnvironmentStringsW(__VA_ARGS__)
-extern typeof(GetEnvironmentStrings) *const
-    __imp_GetEnvironmentStringsW __msabi;
+extern typeof(GetEnvironmentStrings) *const __imp_GetEnvironmentStringsW
+    __msabi;
 
 #define GetStdHandle(...) __imp_GetStdHandle(__VA_ARGS__)
 extern typeof(GetStdHandle) *const __imp_GetStdHandle __msabi;
@@ -23,8 +23,8 @@ extern typeof(WriteFile) *const __imp_WriteFile __msabi;
 
 #define SetDefaultDllDirectories(...) \
   __imp_SetDefaultDllDirectories(__VA_ARGS__)
-extern typeof(SetDefaultDllDirectories) *const
-    __imp_SetDefaultDllDirectories __msabi;
+extern typeof(SetDefaultDllDirectories) *const __imp_SetDefaultDllDirectories
+    __msabi;
 
 #define GetCurrentProcess(...) __imp_GetCurrentProcess(__VA_ARGS__)
 extern typeof(GetCurrentProcess) *const __imp_GetCurrentProcess __msabi;

libc/nt/thunk/winsock.inc

@@ -0,0 +1 @@
+extern typeof(WSAGetLastError) *const __imp_WSAGetLastError __msabi;

libc/nt/winsock.h

@@ -6,6 +6,7 @@
 #include "libc/nt/struct/overlapped.h"
 #include "libc/nt/struct/pollfd.h"
 #include "libc/nt/struct/timeval.h"
+#include "libc/nt/thunk/msabi.h"
 #include "libc/sock/sock.h"
 #include "libc/sock/struct/sockaddr.h"
 /* ░▓█████████████████████████████████████████████▓▒
@@ -513,6 +514,9 @@ void GetAcceptExSockaddrs(
 bool32 DisconnectEx(int64_t s, struct NtOverlapped *inout_opt_lpOverlapped,
                     uint32_t dwFlags, uint32_t dwReserved);
 
+#if ShouldUseMsabiAttribute()
+#include "libc/nt/thunk/winsock.inc"
+#endif /* ShouldUseMsabiAttribute() */
 COSMOPOLITAN_C_END_
 #endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
 #endif /* COSMOPOLITAN_LIBC_NT_WINSOCK_H_ */