Merge #7863 'mingw64: fix gcc warnings'

17 files changed, 114 insertions, 62 deletions

diff --git a/src/nvim/api/buffer.c b/src/nvim/api/buffer.c
index 01dde9dd09..af723639c5 100644
--- a/src/nvim/api/buffer.c
+++ b/src/nvim/api/buffer.c
@@ -399,7 +399,11 @@ void nvim_buf_set_lines(uint64_t channel_id,
   // Only adjust marks if we managed to switch to a window that holds
   // the buffer, otherwise line numbers will be invalid.
   if (save_curbuf.br_buf == NULL) {
-    mark_adjust((linenr_T)start, (linenr_T)(end - 1), MAXLNUM, extra, false);
+    mark_adjust((linenr_T)start,
+                (linenr_T)(end - 1),
+                MAXLNUM,
+                (long)extra,
+                false);
   }
 
   changed_lines((linenr_T)start, 0, (linenr_T)end, (long)extra);
diff --git a/src/nvim/eval/encode.c b/src/nvim/eval/encode.c
index 31779a544f..9bae436e3d 100644
--- a/src/nvim/eval/encode.c
+++ b/src/nvim/eval/encode.c
@@ -28,6 +28,11 @@
 #include "nvim/lib/kvec.h"
 #include "nvim/eval/typval_encode.h"
 
+#ifdef __MINGW32__
+# undef fpclassify
+# define fpclassify __fpclassify
+#endif
+
 #define ga_concat(a, b) ga_concat(a, (char_u *)b)
 #define utf_ptr2char(b) utf_ptr2char((char_u *)b)
 #define utf_ptr2len(b) ((size_t)utf_ptr2len((char_u *)b))
diff --git a/src/nvim/event/rstream.c b/src/nvim/event/rstream.c
index e0500ba828..2fbe7f6773 100644
--- a/src/nvim/event/rstream.c
+++ b/src/nvim/event/rstream.c
@@ -95,7 +95,7 @@ static void alloc_cb(uv_handle_t *handle, size_t suggested, uv_buf_t *buf)
   // `uv_buf_t.len` happens to have different size on Windows.
   size_t write_count;
   buf->base = rbuffer_write_ptr(stream->buffer, &write_count);
-  buf->len = write_count;
+  buf->len = UV_BUF_LEN(write_count);
 }
 
 // Callback invoked by libuv after it copies the data into the buffer provided
@@ -146,7 +146,7 @@ static void fread_idle_cb(uv_idle_t *handle)
   // `uv_buf_t.len` happens to have different size on Windows.
   size_t write_count;
   stream->uvbuf.base = rbuffer_write_ptr(stream->buffer, &write_count);
-  stream->uvbuf.len = write_count;
+  stream->uvbuf.len = UV_BUF_LEN(write_count);
 
   // the offset argument to uv_fs_read is int64_t, could someone really try
   // to read more than 9 quintillion (9e18) bytes?
diff --git a/src/nvim/event/wstream.c b/src/nvim/event/wstream.c
index 320006890d..d2fb52243c 100644
--- a/src/nvim/event/wstream.c
+++ b/src/nvim/event/wstream.c
@@ -90,7 +90,7 @@ bool wstream_write(Stream *stream, WBuffer *buffer)
 
   uv_buf_t uvbuf;
   uvbuf.base = buffer->data;
-  uvbuf.len = buffer->size;
+  uvbuf.len = UV_BUF_LEN(buffer->size);
 
   if (uv_write(&data->uv_req, stream->uvstream, &uvbuf, 1, write_cb)) {
     xfree(data);
diff --git a/src/nvim/ex_cmds.c b/src/nvim/ex_cmds.c
index 06379f159c..6ffd255dc7 100644
--- a/src/nvim/ex_cmds.c
+++ b/src/nvim/ex_cmds.c
@@ -1417,7 +1417,7 @@ char_u *make_filter_cmd(char_u *cmd, char_u *itmp, char_u *otmp)
 #else
   // For shells that don't understand braces around commands, at least allow
   // the use of commands in a pipe.
-  xstrlcpy(buf, cmd, len);
+  xstrlcpy(buf, (char *)cmd, len);
   if (itmp != NULL) {
     // If there is a pipe, we have to put the '<' in front of it.
     // Don't do this when 'shellquote' is not empty, otherwise the
diff --git a/src/nvim/ex_getln.c b/src/nvim/ex_getln.c
index f0185d6825..54bbe66620 100644
--- a/src/nvim/ex_getln.c
+++ b/src/nvim/ex_getln.c
@@ -738,7 +738,7 @@ static int command_line_execute(VimState *state, int key)
         }
         if (vim_ispathsep(ccline.cmdbuff[s->j])
 #ifdef BACKSLASH_IN_FILENAME
-            && vim_strchr(" *?[{`$%#", ccline.cmdbuff[s->j + 1])
+            && vim_strchr((const char_u *)" *?[{`$%#", ccline.cmdbuff[s->j + 1])
             == NULL
 #endif
             ) {
diff --git a/src/nvim/file_search.c b/src/nvim/file_search.c
index 8094a1b266..c6f2166dab 100644
--- a/src/nvim/file_search.c
+++ b/src/nvim/file_search.c
@@ -1586,7 +1586,7 @@ int vim_chdirfile(char_u *fname)
   }
 
 #ifdef BACKSLASH_IN_FILENAME
-  slash_adjust(dir);
+  slash_adjust((char_u *)dir);
 #endif
   if (!strequal(dir, (char *)NameBuff)) {
     do_autocmd_dirchanged(dir, kCdScopeWindow);
diff --git a/src/nvim/macros.h b/src/nvim/macros.h
index 26d4f74b6a..a98c1e05a0 100644
--- a/src/nvim/macros.h
+++ b/src/nvim/macros.h
@@ -148,6 +148,10 @@
 /// zero in those cases (-Wdiv-by-zero in GCC).
 #define ARRAY_SIZE(arr) ((sizeof(arr)/sizeof((arr)[0])) / ((size_t)(!(sizeof(arr) % sizeof((arr)[0])))))
 
+// Duplicated in os/win_defs.h to avoid include-order sensitivity.
+#if defined(WIN32) && defined(RGB)
+# undef RGB
+#endif
 #define RGB(r, g, b) ((r << 16) | (g << 8) | b)
 
 #define STR_(x) #x
@@ -183,4 +187,19 @@
 /// @return ((Type *)obj).
 #define STRUCT_CAST(Type, obj) ((Type *)(obj))
 
+// Type of uv_buf_t.len is platform-dependent.
+// Related: https://github.com/libuv/libuv/pull/1236
+#if defined(WIN32)
+# define UV_BUF_LEN(x)  (ULONG)(x)
+#else
+# define UV_BUF_LEN(x)  (x)
+#endif
+
+// Type of read()/write() `count` param is platform-dependent.
+#if defined(WIN32)
+# define IO_COUNT(x)  (unsigned)(x)
+#else
+# define IO_COUNT(x)  (x)
+#endif
+
 #endif  // NVIM_MACROS_H
diff --git a/src/nvim/main.c b/src/nvim/main.c
index 015df5d070..3402e2bebc 100644
--- a/src/nvim/main.c
+++ b/src/nvim/main.c
@@ -229,7 +229,7 @@ int main(int argc, char **argv)
 #endif
 {
 #if defined(WIN32) && !defined(MAKE_LIB)
-  char *argv[argc];
+  char **argv = xmalloc((size_t)argc * sizeof(char *));
   for (int i = 0; i < argc; i++) {
     char *buf = NULL;
     utf16_to_utf8(argv_w[i], &buf);
@@ -571,6 +571,9 @@ int main(int argc, char **argv)
    */
   normal_enter(false, false);
 
+#if defined(WIN32) && !defined(MAKE_LIB)
+  xfree(argv);
+#endif
   return 0;
 }
 
@@ -1250,12 +1253,12 @@ static void check_and_set_isatty(mparm_T *paramp)
   stdout_isatty
     = paramp->output_isatty = os_isatty(fileno(stdout));
   paramp->err_isatty = os_isatty(fileno(stderr));
+#ifndef WIN32
   int tty_fd = paramp->input_isatty
     ? OS_STDIN_FILENO
     : (paramp->output_isatty
        ? OS_STDOUT_FILENO
        : (paramp->err_isatty ? OS_STDERR_FILENO : -1));
-#ifndef WIN32
   pty_process_save_termios(tty_fd);
 #endif
   TIME_MSG("window checked");
diff --git a/src/nvim/option.c b/src/nvim/option.c
index 192d2b0f78..fa2e6b169b 100644
--- a/src/nvim/option.c
+++ b/src/nvim/option.c
@@ -831,24 +831,26 @@ set_option_default (
     if (flags & P_STRING) {
       /* Use set_string_option_direct() for local options to handle
        * freeing and allocating the value. */
-      if (options[opt_idx].indir != PV_NONE)
+      if (options[opt_idx].indir != PV_NONE) {
         set_string_option_direct(NULL, opt_idx,
-            options[opt_idx].def_val[dvi], opt_flags, 0);
-      else {
-        if ((opt_flags & OPT_FREE) && (flags & P_ALLOCED))
+                                 options[opt_idx].def_val[dvi], opt_flags, 0);
+      } else {
+        if ((opt_flags & OPT_FREE) && (flags & P_ALLOCED)) {
           free_string_option(*(char_u **)(varp));
+        }
         *(char_u **)varp = options[opt_idx].def_val[dvi];
         options[opt_idx].flags &= ~P_ALLOCED;
       }
     } else if (flags & P_NUM)   {
-      if (options[opt_idx].indir == PV_SCROLL)
+      if (options[opt_idx].indir == PV_SCROLL) {
         win_comp_scroll(curwin);
-      else {
-        *(long *)varp = (long)options[opt_idx].def_val[dvi];
-        /* May also set global value for local option. */
-        if (both)
+      } else {
+        *(long *)varp = (long)(intptr_t)options[opt_idx].def_val[dvi];
+        // May also set global value for local option.
+        if (both) {
           *(long *)get_varp_scope(&(options[opt_idx]), OPT_GLOBAL) =
             *(long *)varp;
+        }
       }
     } else {  /* P_BOOL */
       *(int *)varp = (int)(intptr_t)options[opt_idx].def_val[dvi];
@@ -926,7 +928,7 @@ void set_number_default(char *name, long val)
 
   opt_idx = findoption(name);
   if (opt_idx >= 0) {
-    options[opt_idx].def_val[VI_DEFAULT] = (char_u *)val;
+    options[opt_idx].def_val[VI_DEFAULT] = (char_u *)(intptr_t)val;
   }
 }
 
@@ -1440,20 +1442,19 @@ do_set (
              * [-]0-9   set number
              * other    error
              */
-            ++arg;
-            if (nextchar == '&')
-              value = (long)options[opt_idx].def_val[
-                ((flags & P_VI_DEF) || cp_val)
-                ?  VI_DEFAULT : VIM_DEFAULT];
-            else if (nextchar == '<') {
-              /* For 'undolevels' NO_LOCAL_UNDOLEVEL means to
-               * use the global value. */
-              if ((long *)varp == &curbuf->b_p_ul
-                  && opt_flags == OPT_LOCAL)
+            arg++;
+            if (nextchar == '&') {
+              value = (long)(intptr_t)options[opt_idx].def_val[
+                  ((flags & P_VI_DEF) || cp_val) ? VI_DEFAULT : VIM_DEFAULT];
+            } else if (nextchar == '<') {
+              // For 'undolevels' NO_LOCAL_UNDOLEVEL means to
+              // use the global value.
+              if ((long *)varp == &curbuf->b_p_ul && opt_flags == OPT_LOCAL) {
                 value = NO_LOCAL_UNDOLEVEL;
-              else
+              } else {
                 value = *(long *)get_varp_scope(
                     &(options[opt_idx]), OPT_GLOBAL);
+              }
             } else if (((long *)varp == &p_wc
                         || (long *)varp == &p_wcm)
                        && (*arg == '<'
@@ -5011,11 +5012,13 @@ static int optval_default(vimoption_T *p, char_u *varp)
   if (varp == NULL)
     return TRUE;            /* hidden option is always at default */
   dvi = ((p->flags & P_VI_DEF) || p_cp) ? VI_DEFAULT : VIM_DEFAULT;
-  if (p->flags & P_NUM)
-    return *(long *)varp == (long)p->def_val[dvi];
-  if (p->flags & P_BOOL)
+  if (p->flags & P_NUM) {
+    return *(long *)varp == (long)(intptr_t)p->def_val[dvi];
+  }
+  if (p->flags & P_BOOL) {
     return *(int *)varp == (int)(intptr_t)p->def_val[dvi];
-  /* P_STRING */
+  }
+  // P_STRING
   return STRCMP(*(char_u **)varp, p->def_val[dvi]) == 0;
 }
 
diff --git a/src/nvim/os/fs.c b/src/nvim/os/fs.c
index aa28b95c30..c0a97aeb34 100644
--- a/src/nvim/os/fs.c
+++ b/src/nvim/os/fs.c
@@ -461,7 +461,7 @@ ptrdiff_t os_read(const int fd, bool *ret_eof, char *const ret_buf,
   while (read_bytes != size) {
     assert(size >= read_bytes);
     const ptrdiff_t cur_read_bytes = read(fd, ret_buf + read_bytes,
-                                          size - read_bytes);
+                                          IO_COUNT(size - read_bytes));
     if (cur_read_bytes > 0) {
       read_bytes += (size_t)cur_read_bytes;
     }
@@ -564,7 +564,7 @@ ptrdiff_t os_write(const int fd, const char *const buf, const size_t size)
   while (written_bytes != size) {
     assert(size >= written_bytes);
     const ptrdiff_t cur_written_bytes = write(fd, buf + written_bytes,
-                                              size - written_bytes);
+                                              IO_COUNT(size - written_bytes));
     if (cur_written_bytes > 0) {
       written_bytes += (size_t)cur_written_bytes;
     }
@@ -990,7 +990,7 @@ bool os_fileid_equal_fileinfo(const FileID *file_id,
 /// to and return that name in allocated memory.
 /// Otherwise NULL is returned.
 char *os_resolve_shortcut(const char *fname)
-  FUNC_ATTR_NONNULL_ALL FUNC_ATTR_WARN_UNUSED_RESULT FUNC_ATTR_MALLOC
+  FUNC_ATTR_WARN_UNUSED_RESULT FUNC_ATTR_MALLOC
 {
   HRESULT hr;
   IPersistFile *ppf = NULL;
diff --git a/src/nvim/os/pty_process_win.c b/src/nvim/os/pty_process_win.c
index 3c4839a076..b90578edb7 100644
--- a/src/nvim/os/pty_process_win.c
+++ b/src/nvim/os/pty_process_win.c
@@ -131,7 +131,7 @@ int pty_process_spawn(PtyProcess *ptyproc)
     }
     goto cleanup;
   }
-  proc->pid = GetProcessId(process_handle);
+  proc->pid = (int)GetProcessId(process_handle);
 
   if (!RegisterWaitForSingleObject(
       &ptyproc->finish_wait,
@@ -339,20 +339,20 @@ static void quote_cmd_arg(char *dest, size_t dest_remaining, const char *src)
   }
 
   // Expected input/output:
-  //   input : hello"world
-  //   output: "hello\"world"
-  //   input : hello""world
-  //   output: "hello\"\"world"
-  //   input : hello\world
-  //   output: hello\world
-  //   input : hello\\world
-  //   output: hello\\world
-  //   input : hello\"world
-  //   output: "hello\\\"world"
-  //   input : hello\\"world
-  //   output: "hello\\\\\"world"
-  //   input : hello world\
-  //   output: "hello world\\"
+  //   input : 'hello"world'
+  //   output: '"hello\"world"'
+  //   input : 'hello""world'
+  //   output: '"hello\"\"world"'
+  //   input : 'hello\world'
+  //   output: 'hello\world'
+  //   input : 'hello\\world'
+  //   output: 'hello\\world'
+  //   input : 'hello\"world'
+  //   output: '"hello\\\"world"'
+  //   input : 'hello\\"world'
+  //   output: '"hello\\\\\"world"'
+  //   input : 'hello world\'
+  //   output: '"hello world\\"'
 
   assert(dest_remaining--);
   *(dest++) = NUL;
diff --git a/src/nvim/path.c b/src/nvim/path.c
index 51adcfb135..09cede8805 100644
--- a/src/nvim/path.c
+++ b/src/nvim/path.c
@@ -332,7 +332,7 @@ int path_fnamencmp(const char *const fname1, const char *const fname2,
         && (p_fic ? (c1 != c2 && CH_FOLD(c1) != CH_FOLD(c2)) : c1 != c2)) {
       break;
     }
-    len -= MB_PTR2LEN((const char_u *)p1);
+    len -= (size_t)MB_PTR2LEN((const char_u *)p1);
     p1 += MB_PTR2LEN((const char_u *)p1);
     p2 += MB_PTR2LEN((const char_u *)p2);
   }
@@ -1691,7 +1691,7 @@ int vim_FullName(const char *fname, char *buf, size_t len, bool force)
   if (strlen(fname) > (len - 1)) {
     xstrlcpy(buf, fname, len);  // truncate
 #ifdef WIN32
-    slash_adjust(buf);
+    slash_adjust((char_u *)buf);
 #endif
     return FAIL;
   }
@@ -1706,7 +1706,7 @@ int vim_FullName(const char *fname, char *buf, size_t len, bool force)
     xstrlcpy(buf, fname, len);  // something failed; use the filename
   }
 #ifdef WIN32
-  slash_adjust(buf);
+  slash_adjust((char_u *)buf);
 #endif
   return rv;
 }
@@ -1741,7 +1741,7 @@ char *fix_fname(const char *fname)
   path_fix_case((char_u *)fname);  // set correct case for file name
 # endif
 
-  return fname;
+  return (char *)fname;
 #endif
 }
 
diff --git a/src/nvim/strings.c b/src/nvim/strings.c
index 687f734742..e3f6a8cbf6 100644
--- a/src/nvim/strings.c
+++ b/src/nvim/strings.c
@@ -50,6 +50,13 @@
 #include "nvim/os/shell.h"
 #include "nvim/eval/encode.h"
 
+#ifdef __MINGW32__
+# undef fpclassify
+# define fpclassify __fpclassify
+# undef isnan
+# define isnan _isnan
+#endif
+
 /*
  * Copy "string" into newly allocated memory.
  */
diff --git a/src/nvim/tui/input.c b/src/nvim/tui/input.c
index 96bb692db9..b04a6ce4f9 100644
--- a/src/nvim/tui/input.c
+++ b/src/nvim/tui/input.c
@@ -47,9 +47,11 @@ void term_input_init(TermInput *input, Loop *loop)
   termkey_set_canonflags(input->tk, curflags | TERMKEY_CANON_DELBS);
   // setup input handle
 #ifdef WIN32
-  uv_tty_init(loop, &input->tty_in, 0, 1);
+  uv_tty_init(&loop->uv, &input->tty_in, 0, 1);
   uv_tty_set_mode(&input->tty_in, UV_TTY_MODE_RAW);
-  rstream_init_stream(&input->read_stream, &input->tty_in, 0xfff);
+  rstream_init_stream(&input->read_stream,
+                      (uv_stream_t *)&input->tty_in,
+                      0xfff);
 #else
   rstream_init_fd(loop, &input->read_stream, input->in_fd, 0xfff);
 #endif
diff --git a/src/nvim/tui/tui.c b/src/nvim/tui/tui.c
index 2349bd2ae9..f3383eb006 100644
--- a/src/nvim/tui/tui.c
+++ b/src/nvim/tui/tui.c
@@ -1744,14 +1744,14 @@ static void flush_buf(UI *ui)
     // cursor is visible. Write a "cursor invisible" command before writing the
     // buffer.
     bufp->base = data->invis;
-    bufp->len = data->invislen;
+    bufp->len = UV_BUF_LEN(data->invislen);
     bufp++;
     data->is_invisible = true;
   }
 
   if (data->bufpos > 0) {
     bufp->base = data->buf;
-    bufp->len = data->bufpos;
+    bufp->len = UV_BUF_LEN(data->bufpos);
     bufp++;
   }
 
@@ -1759,7 +1759,7 @@ static void flush_buf(UI *ui)
     // not busy and the cursor is invisible. Write a "cursor normal" command
     // after writing the buffer.
     bufp->base = data->norm;
-    bufp->len = data->normlen;
+    bufp->len = UV_BUF_LEN(data->normlen);
     bufp++;
     data->is_invisible = data->busy;
   }
diff --git a/test/functional/fixtures/tty-test.c b/test/functional/fixtures/tty-test.c
index edcbe23f86..4f0858acdb 100644
--- a/test/functional/fixtures/tty-test.c
+++ b/test/functional/fixtures/tty-test.c
@@ -41,6 +41,7 @@ static void walk_cb(uv_handle_t *handle, void *arg)
   }
 }
 
+#ifndef WIN32
 static void sig_handler(int signum)
 {
   switch (signum) {
@@ -57,6 +58,7 @@ static void sig_handler(int signum)
     return;
   }
 }
+#endif
 
 #ifdef WIN32
 static void sigwinch_cb(uv_signal_t *handle, int signum)
@@ -94,7 +96,14 @@ static void read_cb(uv_stream_t *stream, ssize_t cnt, const uv_buf_t *buf)
   uv_tty_init(&write_loop, &out, fileno(stdout), 0);
 
   uv_write_t req;
-  uv_buf_t b = {.base = buf->base, .len = (size_t)cnt};
+  uv_buf_t b = {
+    .base = buf->base,
+#ifdef WIN32
+    .len = (ULONG)cnt
+#else
+    .len = (size_t)cnt
+#endif
+  };
   uv_write(&req, STRUCT_CAST(uv_stream_t, &out), &b, 1, NULL);
   uv_run(&write_loop, UV_RUN_DEFAULT);