-Wwrite-strings: gdbserver's 'port' parsing

-Wwrite-strings flags this assignment as requiring a cast:

		  port = STDIO_CONNECTION_NAME;

because 'port' is a "char *", and STDIO_CONNECTION_NAME is a string
literal.

gdb/gdbserver/ChangeLog:
2017-04-05  Pedro Alves  <palves@redhat.com>

        * remote-utils.c (remote_prepare, remote_open): Constify.
        * remote-utils.h (remote_prepare, remote_open): Constify.
        * server.c (captured_main): Constify 'port' handling.

diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index 39aea2f..4660a7b 100644 (file)
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,3 +1,9 @@
+2017-04-05  Pedro Alves  <palves@redhat.com>
+
+        * remote-utils.c (remote_prepare, remote_open): Constify.
+        * remote-utils.h (remote_prepare, remote_open): Constify.
+        * server.c (captured_main): Constify 'port' handling.
+
 2017-04-04  Simon Marchi  <simon.marchi@ericsson.com>
 
        * Makefile.in (clean): Clear .deps.

diff --git a/gdb/gdbserver/remote-utils.c b/gdb/gdbserver/remote-utils.c
index 6a2cc04..37a6402 100644 (file)
--- a/gdb/gdbserver/remote-utils.c
+++ b/gdb/gdbserver/remote-utils.c
@@ -217,9 +217,9 @@ handle_accept_event (int err, gdb_client_data client_data)
    NAME is the filename used for communication.  */
 
 void
-remote_prepare (char *name)
+remote_prepare (const char *name)
 {
-  char *port_str;
+  const char *port_str;
 #ifdef USE_WIN32API
   static int winsock_initialized;
 #endif
@@ -284,9 +284,9 @@ remote_prepare (char *name)
    NAME is the filename used for communication.  */
 
 void
-remote_open (char *name)
+remote_open (const char *name)
 {
-  char *port_str;
+  const char *port_str;
 
   port_str = strchr (name, ':');
 #ifdef USE_WIN32API

diff --git a/gdb/gdbserver/remote-utils.h b/gdb/gdbserver/remote-utils.h
index 9db46be..b3eab3b 100644 (file)
--- a/gdb/gdbserver/remote-utils.h
+++ b/gdb/gdbserver/remote-utils.h
@@ -35,8 +35,8 @@ int putpkt (char *buf);
 int putpkt_binary (char *buf, int len);
 int putpkt_notif (char *buf);
 int getpkt (char *buf);
-void remote_prepare (char *name);
-void remote_open (char *name);
+void remote_prepare (const char *name);
+void remote_open (const char *name);
 void remote_close (void);
 void write_ok (char *buf);
 void write_enn (char *buf);

diff --git a/gdb/gdbserver/server.c b/gdb/gdbserver/server.c
index 4bc7f71..51f6a28 100644 (file)
--- a/gdb/gdbserver/server.c
+++ b/gdb/gdbserver/server.c
@@ -3511,7 +3511,8 @@ captured_main (int argc, char *argv[])
 {
   int bad_attach;
   int pid;
-  char *arg_end, *port;
+  char *arg_end;
+  const char *port = NULL;
   char **next_arg = &argv[1];
   volatile int multi_mode = 0;
   volatile int attach = 0;
@@ -3608,7 +3609,8 @@ captured_main (int argc, char *argv[])
        {
          /* "-" specifies a stdio connection and is a form of port
             specification.  */
-         *next_arg = STDIO_CONNECTION_NAME;
+         port = STDIO_CONNECTION_NAME;
+         next_arg++;
          break;
        }
       else if (strcmp (*next_arg, "--disable-randomization") == 0)
@@ -3627,8 +3629,11 @@ captured_main (int argc, char *argv[])
       continue;
     }
 
-  port = *next_arg;
-  next_arg++;
+  if (port == NULL)
+    {
+      port = *next_arg;
+      next_arg++;
+    }
   if (port == NULL || (!attach && !multi_mode && *next_arg == NULL))
     {
       gdbserver_usage (stderr);