re PR ada/82813 (warning: '.builtin_memcpy' writing between 2 and 6 bytes into a…

re PR ada/82813 (warning: '.builtin_memcpy' writing between 2 and 6 bytes into a region of size 0 overflows the destination [-Wstringop-overflow=])

	PR ada/82813
	* gcc-interface/misc.c (gnat_post_options): Disable string overflow
	warnings.

From-SVN: r258466

gcc/ada/ChangeLog

+2018-03-12  Eric Botcazou  <ebotcazou@adacore.com>
+
+	PR ada/82813
+	* gcc-interface/misc.c (gnat_post_options): Disable string overflow
+	warnings.
+
 2018-03-10  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* gcc-interface/trans.c (node_has_volatile_full_access) <N_Identifier>:

gcc/ada/gcc-interface/misc.c

@@ -265,6 +265,9 @@ gnat_post_options (const char **pfilename ATTRIBUTE_UNUSED)
   /* No return type warnings for Ada.  */
   warn_return_type = 0;
 
+  /* No string overflow warnings for Ada.  */
+  warn_stringop_overflow = 0;
+
   /* No caret by default for Ada.  */
   if (!global_options_set.x_flag_diagnostics_show_caret)
     global_dc->show_caret = false;