2017-11-10  Martin Sebor  <msebor@redhat.com>

	* gdb/cli/cli-decode.c (help_list): Use strcpy and memcpy instead
	of strncpy.
	* gdb/cp-namespace.c (cp_lookup_transparent_type_loop): Use strcpy
	instead of strncpy to avoid -Wstringop-truncation.
	* gdb/gdbserver/remote-utils.c (prepare_resume_reply): Use memcpy
	instead of strncpy to avoid -Wstringop-truncation.

diff --git a/gdb/cli/cli-decode.c b/gdb/cli/cli-decode.c
index 87ebed5..968779e 100644
--- a/gdb/cli/cli-decode.c
+++ b/gdb/cli/cli-decode.c
@@ -1,4 +1,4 @@
-/* Handle lists of commands, their decoding and documentation, for GDB.
+t/* Handle lists of commands, their decoding and documentation, for GDB.
 
    Copyright (C) 1986-2017 Free Software Foundation, Inc.
 
@@ -1115,9 +1115,8 @@ help_list (struct cmd_list_element *list, const char *cmdtype,
   if (len)
     {
       cmdtype1[0] = ' ';
-      strncpy (cmdtype1 + 1, cmdtype, len - 1);
-      cmdtype1[len] = 0;
-      strncpy (cmdtype2, cmdtype, len - 1);
+      strcpy (cmdtype1 + 1, cmdtype);
+      memcpy (cmdtype2, cmdtype, len - 1);
       strcpy (cmdtype2 + len - 1, " sub");
     }
 
diff --git a/gdb/cp-namespace.c b/gdb/cp-namespace.c
index 214b7e1..fabe87a 100644
--- a/gdb/cp-namespace.c
+++ b/gdb/cp-namespace.c
@@ -1068,7 +1068,7 @@ cp_lookup_transparent_type_loop (const char *name,
 
   full_name = (char *) alloca (scope_length + 2 + strlen (name) + 1);
   strncpy (full_name, scope, scope_length);
-  strncpy (full_name + scope_length, "::", 2);
+  strcpy (full_name + scope_length, "::");
   strcpy (full_name + scope_length + 2, name);
 
   return basic_lookup_transparent_type (full_name);
diff --git a/gdb/gdbserver/remote-utils.c b/gdb/gdbserver/remote-utils.c
index 66e0652..e314447 100644
--- a/gdb/gdbserver/remote-utils.c
+++ b/gdb/gdbserver/remote-utils.c
@@ -1201,7 +1201,7 @@ prepare_resume_reply (char *buf, ptid_t ptid,
 	    CORE_ADDR addr;
 	    int i;
 
-	    strncpy (buf, "watch:", 6);
+	    memcpy (buf, "watch:", 6);
 	    buf += 6;
 
 	    addr = (*the_target->stopped_data_address) ();