build: add -Wstrict-prototypes

Fixes: https://github.com/libuv/libuv/pull/1320
PR-URL: https://github.com/libuv/libuv/pull/1326
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>

Makefile.mingw

@@ -17,6 +17,7 @@ CC ?= gcc
 CFLAGS += -Wall \
           -Wextra \
           -Wno-unused-parameter \
+          -Wstrict-prototypes \
           -Iinclude \
           -Isrc \
           -Isrc/win \

common.gypi

@@ -180,6 +180,7 @@
             '-Wendif-labels',
             '-W',
             '-Wno-unused-parameter',
+            '-Wstrict-prototypes',
           ],
         },
         'conditions': [

configure.ac

@@ -33,6 +33,7 @@ CC_CHECK_CFLAGS_APPEND([-std=gnu89])
 CC_CHECK_CFLAGS_APPEND([-Wall])
 CC_CHECK_CFLAGS_APPEND([-Wextra])
 CC_CHECK_CFLAGS_APPEND([-Wno-unused-parameter])
+CC_CHECK_CFLAGS_APPEND([-Wstrict-prototypes])
 # AM_PROG_AR is not available in automake v0.11 but it's essential in v0.12.
 m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
 # autoconf complains if AC_PROG_LIBTOOL precedes AM_PROG_AR.

src/unix/async.c

@@ -226,7 +226,7 @@ void uv__async_stop(uv_loop_t* loop) {
 }
 
 
-static int uv__async_eventfd() {
+static int uv__async_eventfd(void) {
 #if defined(__linux__)
   static int no_eventfd2;
   static int no_eventfd;

src/win/core.c

@@ -83,7 +83,7 @@ static int uv__loops_capacity;
 #define UV__LOOPS_CHUNK_SIZE 8
 static uv_mutex_t uv__loops_lock;
 
-static void uv__loops_init() {
+static void uv__loops_init(void) {
   uv_mutex_init(&uv__loops_lock);
 }
 
@@ -158,7 +158,7 @@ loop_removed:
   uv_mutex_unlock(&uv__loops_lock);
 }
 
-void uv__wake_all_loops() {
+void uv__wake_all_loops(void) {
   int i;
   uv_loop_t* loop;
 

src/win/detect-wakeup.c

@@ -2,9 +2,9 @@
 #include "internal.h"
 #include "winapi.h"
 
-static void uv__register_system_resume_callback();
+static void uv__register_system_resume_callback(void);
 
-void uv__init_detect_system_wakeup() {
+void uv__init_detect_system_wakeup(void) {
   /* Try registering system power event callback. This is the cleanest
    * method, but it will only work on Win8 and above.
    */
@@ -20,7 +20,7 @@ static ULONG CALLBACK uv__system_resume_callback(PVOID Context,
   return 0;
 }
 
-static void uv__register_system_resume_callback() {
+static void uv__register_system_resume_callback(void) {
   _DEVICE_NOTIFY_SUBSCRIBE_PARAMETERS recipient;
   _HPOWERNOTIFY registration_handle;
 

src/win/fs.c

@@ -114,7 +114,7 @@ const WCHAR UNC_PATH_PREFIX[] = L"\\\\?\\UNC\\";
 const WCHAR UNC_PATH_PREFIX_LEN = 8;
 
 
-void uv_fs_init() {
+void uv_fs_init(void) {
   _fmode = _O_BINARY;
 }
 

src/win/internal.h

@@ -206,7 +206,7 @@ void uv_pipe_endgame(uv_loop_t* loop, uv_pipe_t* handle);
 /*
  * TTY
  */
-void uv_console_init();
+void uv_console_init(void);
 
 int uv_tty_read_start(uv_tty_t* handle, uv_alloc_cb alloc_cb,
     uv_read_cb read_cb);
@@ -259,7 +259,7 @@ void uv_prepare_invoke(uv_loop_t* loop);
 void uv_check_invoke(uv_loop_t* loop);
 void uv_idle_invoke(uv_loop_t* loop);
 
-void uv__once_init();
+void uv__once_init(void);
 
 
 /*
@@ -275,7 +275,7 @@ void uv_process_async_wakeup_req(uv_loop_t* loop, uv_async_t* handle,
 /*
  * Signal watcher
  */
-void uv_signals_init();
+void uv_signals_init(void);
 int uv__signal_dispatch(int signum);
 
 void uv_signal_close(uv_loop_t* loop, uv_signal_t* handle);
@@ -302,7 +302,7 @@ int uv_translate_sys_error(int sys_errno);
 /*
  * FS
  */
-void uv_fs_init();
+void uv_fs_init(void);
 
 
 /*
@@ -323,11 +323,11 @@ void uv__fs_poll_endgame(uv_loop_t* loop, uv_fs_poll_t* handle);
 /*
  * Utilities.
  */
-void uv__util_init();
+void uv__util_init(void);
 
 uint64_t uv__hrtime(double scale);
-int uv_parent_pid();
-int uv_current_pid();
+int uv_parent_pid(void);
+int uv_current_pid(void);
 __declspec(noreturn) void uv_fatal_error(const int errorno, const char* syscall);
 int uv__getpwuid_r(uv_passwd_t* pwd);
 int uv__convert_utf16_to_utf8(const WCHAR* utf16, int utf16len, char** utf8);
@@ -350,13 +350,13 @@ HANDLE uv__stdio_handle(BYTE* buffer, int fd);
 /*
  * Winapi and ntapi utility functions
  */
-void uv_winapi_init();
+void uv_winapi_init(void);
 
 
 /*
  * Winsock utility functions
  */
-void uv_winsock_init();
+void uv_winsock_init(void);
 
 int uv_ntstatus_to_winsock_error(NTSTATUS status);
 
@@ -385,11 +385,11 @@ extern struct sockaddr_in6 uv_addr_ip6_any_;
 /*
  * Wake all loops with fake message
  */
-void uv__wake_all_loops();
+void uv__wake_all_loops(void);
 
 /*
  * Init system wake-up detection
  */
-void uv__init_detect_system_wakeup();
+void uv__init_detect_system_wakeup(void);
 
 #endif /* UV_WIN_INTERNAL_H_ */

src/win/poll.c

@@ -61,13 +61,13 @@ static void uv__init_overlapped_dummy(void) {
 }
 
 
-static OVERLAPPED* uv__get_overlapped_dummy() {
+static OVERLAPPED* uv__get_overlapped_dummy(void) {
   uv_once(&overlapped_dummy_init_guard_, uv__init_overlapped_dummy);
   return &overlapped_dummy_;
 }
 
 
-static AFD_POLL_INFO* uv__get_afd_poll_info_dummy() {
+static AFD_POLL_INFO* uv__get_afd_poll_info_dummy(void) {
   return &afd_poll_info_dummy_;
 }
 

src/win/signal.c

@@ -39,7 +39,7 @@ int uv__signal_start(uv_signal_t* handle,
                      int signum,
                      int oneshot);
 
-void uv_signals_init() {
+void uv_signals_init(void) {
   InitializeCriticalSection(&uv__signal_lock);
   if (!SetConsoleCtrlHandler(uv__signal_control_handler, TRUE))
     abort();

src/win/tty.c

@@ -138,7 +138,7 @@ typedef enum {
 static uv_vtermstate_t uv__vterm_state = UV_UNCHECKED;
 static void uv__determine_vterm_state(HANDLE handle);
 
-void uv_console_init() {
+void uv_console_init(void) {
   if (uv_sem_init(&uv_tty_output_lock, 1))
     abort();
 }

src/win/util.c

@@ -77,7 +77,7 @@ static double hrtime_interval_ = 0;
 /*
  * One-time initialization code for functionality defined in util.c.
  */
-void uv__util_init() {
+void uv__util_init(void) {
   LARGE_INTEGER perf_frequency;
 
   /* Initialize process title access mutex. */
@@ -323,7 +323,7 @@ uint64_t uv_get_total_memory(void) {
 }
 
 
-int uv_parent_pid() {
+int uv_parent_pid(void) {
   int parent_pid = -1;
   HANDLE handle;
   PROCESSENTRY32 pe;
@@ -346,7 +346,7 @@ int uv_parent_pid() {
 }
 
 
-int uv_current_pid() {
+int uv_current_pid(void) {
   if (current_pid == 0) {
     current_pid = GetCurrentProcessId();
   }
@@ -408,7 +408,7 @@ done:
 }
 
 
-static int uv__get_process_title() {
+static int uv__get_process_title(void) {
   WCHAR title_w[MAX_TITLE_LENGTH];
 
   if (!GetConsoleTitleW(title_w, sizeof(title_w) / sizeof(WCHAR))) {

src/win/winapi.c

@@ -53,7 +53,7 @@ sGetFinalPathNameByHandleW pGetFinalPathNameByHandleW;
 sPowerRegisterSuspendResumeNotification pPowerRegisterSuspendResumeNotification;
 
 
-void uv_winapi_init() {
+void uv_winapi_init(void) {
   HMODULE ntdll_module;
   HMODULE kernel32_module;
   HMODULE powrprof_module;

src/win/winsock.c

@@ -80,7 +80,7 @@ static int error_means_no_support(DWORD error) {
 }
 
 
-void uv_winsock_init() {
+void uv_winsock_init(void) {
   WSADATA wsa_data;
   int errorno;
   SOCKET dummy;

uv.gyp

@@ -36,7 +36,7 @@
     ],
     'xcode_settings': {
       'GCC_SYMBOLS_PRIVATE_EXTERN': 'YES',  # -fvisibility=hidden
-      'WARNING_CFLAGS': [ '-Wall', '-Wextra', '-Wno-unused-parameter' ],
+      'WARNING_CFLAGS': [ '-Wall', '-Wextra', '-Wno-unused-parameter', '-Wstrict-prototypes' ],
       'OTHER_CFLAGS': [ '-g', '--std=gnu89', '-pedantic' ],
     }
   },
@@ -210,6 +210,7 @@
             '-Wall',
             '-Wextra',
             '-Wno-unused-parameter',
+            '-Wstrict-prototypes',
           ],
         }],
         [ 'OS in "mac ios"', {