re PR go/61496 (Many Go tests FAIL with ld warning about go$zerovalue)

	PR go/61496
	* gospec.c (lang_specific_driver): On Solaris, when not using GNU
	ld, add -t option to avoid warning about common symbol changing
	size.

From-SVN: r211658

gcc/go/ChangeLog

+2014-06-13  Ian Lance Taylor  <iant@google.com>
+
+	PR go/61496
+	* gospec.c (lang_specific_driver): On Solaris, when not using GNU
+	ld, add -t option to avoid warning about common symbol changing
+	size.
+
 2014-06-10  Jan Hubicka  <hubicka@ucw.cz>
 
 	* go/go-gcc.cc (Gcc_backend::global_variable_set_init): Use

gcc/go/gospec.c

@@ -395,6 +395,15 @@ lang_specific_driver (struct cl_decoded_option **in_decoded_options,
     }
 #endif
 
+#if defined(TARGET_SOLARIS) && !defined(USE_GLD)
+  /* We use a common symbol for go$zerovalue.  On Solaris, when not
+     using the GNU linker, the Solaris linker needs an option to not
+     warn about this.  Everything works without this option, but you
+     get unsightly warnings at link time.  */
+  generate_option (OPT_Wl_, "-t", 1, CL_DRIVER, &new_decoded_options[j]);
+  j++;
+#endif
+
   *in_decoded_options_count = j;
   *in_decoded_options = new_decoded_options;
   *in_added_libraries = added_libraries;