Avoid some compiler warnings in w32.c

* src/w32.c (codepage_for_filenames, crlf_to_lf)
(ansi_encode_filename, socket_to_fd, sys_write)
(check_windows_init_file): Avoid compiler warnings about
differences in pointer signedness.

diff --git a/src/w32.c b/src/w32.c
index 9b1d94de7862f359bd50ab1ab2b77a02f0027dfa..773290fc2f09cd9ef0b0cc5d23dabcbd39427be7 100644 (file)
--- a/src/w32.c
+++ b/src/w32.c
@@ -1513,7 +1513,7 @@ codepage_for_filenames (CPINFO *cp_info)
 
       if (NILP (current_encoding))
        {
-         char *cpname = SDATA (SYMBOL_NAME (current_encoding));
+         char *cpname = SSDATA (SYMBOL_NAME (current_encoding));
          char *cp = NULL, *end;
          int cpnum;
 
@@ -2165,11 +2165,11 @@ unixtodos_filename (register char *p)
    (From msdos.c...probably should figure out a way to share it,
    although this code isn't going to ever change.)  */
 static int
-crlf_to_lf (register int n, register unsigned char *buf)
+crlf_to_lf (register int n, register char *buf)
 {
-  unsigned char *np = buf;
-  unsigned char *startp = buf;
-  unsigned char *endp = buf + n;
+  unsigned char *np = (unsigned char *)buf;
+  unsigned char *startp = np;
+  char *endp = buf + n;
 
   if (n == 0)
     return n;
@@ -2386,7 +2386,7 @@ ansi_encode_filename (Lisp_Object filename)
     {
       char shortname[MAX_PATH];
 
-      if (w32_get_short_filename (SDATA (filename), shortname, MAX_PATH))
+      if (w32_get_short_filename (SSDATA (filename), shortname, MAX_PATH))
        {
          dostounix_filename (shortname);
          encoded_filename = build_string (shortname);
@@ -7495,7 +7495,7 @@ socket_to_fd (SOCKET s)
                   though the socket wasn't really a kernel handle,
                   because a real handle has the same value.  So
                   test whether the new handle really is a socket.  */
-               long nonblocking = 0;
+               unsigned long nonblocking = 0;
                if (pfn_ioctlsocket ((SOCKET) new_s, FIONBIO, &nonblocking) == 0)
                  {
                    pfn_closesocket (s);
@@ -8520,7 +8520,7 @@ sys_write (int fd, const void * buffer, unsigned int count)
          int nbytes = count;
 
          SAFE_NALLOCA (tmpbuf, 2, count);
-         dst = tmpbuf;
+         dst = (unsigned char *)tmpbuf;
 
          while (1)
            {
@@ -9062,8 +9062,8 @@ check_windows_init_file (void)
       if (fd < 0)
        {
          Lisp_Object load_path_print = Fprin1_to_string (Vload_path, Qnil);
-         char *init_file_name = SDATA (init_file);
-         char *load_path = SDATA (load_path_print);
+         char *init_file_name = SSDATA (init_file);
+         char *load_path = SSDATA (load_path_print);
          char *buffer = alloca (1024
                                 + strlen (init_file_name)
                                 + strlen (load_path));