* process.c: conform to C89 pointer rules

2 files changed, 18 insertions, 14 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index e4a3c63cb0b..c061fc53b94 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -21,6 +21,8 @@
         (Fbase64_encode_region, base64_encode_1, Fbase64_decode_region, Fmd5):
         Likewise.
         * lread.c (read1, hash_string): Likewise.
+        * process.c (read_process_output, send_process, Fprocess_send_region):
+        Likewise.
 
 2011-02-06  Paul Eggert  <eggert@cs.ucla.edu>
 
diff --git a/src/process.c b/src/process.c
index da97e3de18a..80e70e49f8e 100644
--- a/src/process.c
+++ b/src/process.c
@@ -5287,7 +5287,7 @@ read_process_output (Lisp_Object proc, register int channel)
          save the match data in a special nonrecursive fashion.  */
       running_asynch_code = 1;
 
-      decode_coding_c_string (coding, chars, nbytes, Qt);
+      decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt);
       text = coding->dst_object;
       Vlast_coding_system_used = CODING_ID_NAME (coding->id);
       /* A new coding system might be found.  */
@@ -5391,7 +5391,7 @@ read_process_output (Lisp_Object proc, register int channel)
       if (! (BEGV <= PT && PT <= ZV))
         Fwiden ();
 
-      decode_coding_c_string (coding, chars, nbytes, Qt);
+      decode_coding_c_string (coding, (unsigned char *) chars, nbytes, Qt);
       text = coding->dst_object;
       Vlast_coding_system_used = CODING_ID_NAME (coding->id);
       /* A new coding system might be found.  See the comment in the
@@ -5495,7 +5495,7 @@ send_process_trap (int ignore)
    This function can evaluate Lisp code and can garbage collect.  */
 
 static void
-send_process (volatile Lisp_Object proc, const unsigned char *volatile buf,
+send_process (volatile Lisp_Object proc, const char *volatile buf,
               volatile EMACS_INT len, volatile Lisp_Object object)
 {
   /* Use volatile to protect variables from being clobbered by longjmp.  */
@@ -5573,7 +5573,7 @@ send_process (volatile Lisp_Object proc, const unsigned char *volatile buf,
           set_buffer_internal (XBUFFER (object));
           save_pt = PT, save_pt_byte = PT_BYTE;
 
-          from_byte = PTR_BYTE_POS (buf);
+          from_byte = PTR_BYTE_POS ((unsigned char *) buf);
           from = BYTE_TO_CHAR (from_byte);
           to = BYTE_TO_CHAR (from_byte + len);
           TEMP_SET_PT_BOTH (from, from_byte);
@@ -5595,7 +5595,7 @@ send_process (volatile Lisp_Object proc, const unsigned char *volatile buf,
 
       len = coding->produced;
       object = coding->dst_object;
-      buf = SDATA (object);
+      buf = SSDATA (object);
     }
 
   if (pty_max_bytes == 0)
@@ -5629,7 +5629,7 @@ send_process (volatile Lisp_Object proc, const unsigned char *volatile buf,
 #ifdef DATAGRAM_SOCKETS
               if (DATAGRAM_CHAN_P (outfd))
                 {
-                  rv = sendto (outfd, (char *) buf, this,
+                  rv = sendto (outfd, buf, this,
                                0, datagram_address[outfd].sa,
                                datagram_address[outfd].len);
                   if (rv < 0 && errno == EMSGSIZE)
@@ -5646,10 +5646,10 @@ send_process (volatile Lisp_Object proc, const unsigned char *volatile buf,
                   if (XPROCESS (proc)->gnutls_p)
                     rv = emacs_gnutls_write (outfd,
                                              XPROCESS (proc),
-                                             (char *) buf, this);
+                                             buf, this);
                   else
 #endif
-                    rv = emacs_write (outfd, (char *) buf, this);
+                    rv = emacs_write (outfd, buf, this);
 #ifdef ADAPTIVE_READ_BUFFERING
                   if (p->read_output_delay > 0
                       && p->adaptive_read_buffering == 1)
@@ -5706,9 +5706,10 @@ send_process (volatile Lisp_Object proc, const unsigned char *volatile buf,
                       /* Running filters might relocate buffers or strings.
                          Arrange to relocate BUF.  */
                       if (BUFFERP (object))
-                        offset = BUF_PTR_BYTE_POS (XBUFFER (object), buf);
+                        offset = BUF_PTR_BYTE_POS (XBUFFER (object),
+                                                   (unsigned char *) buf);
                       else if (STRINGP (object))
-                        offset = buf - SDATA (object);
+                        offset = buf - SSDATA (object);
 
 #ifdef EMACS_HAS_USECS
                       wait_reading_process_output (0, 20000, 0, 0, Qnil, NULL, 0);
@@ -5717,9 +5718,10 @@ send_process (volatile Lisp_Object proc, const unsigned char *volatile buf,
 #endif
 
                       if (BUFFERP (object))
-                        buf = BUF_BYTE_ADDRESS (XBUFFER (object), offset);
+                        buf = (char *) BUF_BYTE_ADDRESS (XBUFFER (object),
+                                                         offset);
                       else if (STRINGP (object))
-                        buf = offset + SDATA (object);
+                        buf = offset + SSDATA (object);
 
                       rv = 0;
                     }
@@ -5770,7 +5772,7 @@ Output from processes can arrive in between bunches.  */)
 
   start1 = CHAR_TO_BYTE (XINT (start));
   end1 = CHAR_TO_BYTE (XINT (end));
-  send_process (proc, BYTE_POS_ADDR (start1), end1 - start1,
+  send_process (proc, (char *) BYTE_POS_ADDR (start1), end1 - start1,
                 Fcurrent_buffer ());
 
   return Qnil;
@@ -5789,7 +5791,7 @@ Output from processes can arrive in between bunches.  */)
   Lisp_Object proc;
   CHECK_STRING (string);
   proc = get_process (process);
-  send_process (proc, SDATA (string),
+  send_process (proc, SSDATA (string),
                 SBYTES (string), string);
   return Qnil;
 }