re PR go/51874 (Many libgo testsuite failures on IRIX)

	PR go/51874
	* go.test/go-test.exp (go-gc-tests): Don't run nilptr test on
	SPARC Solaris.  Don't run the test at all on systems where it may
	not work, rather than xfailing it.

From-SVN: r184137

gcc/testsuite/ChangeLog

+2012-02-11  Ian Lance Taylor  <iant@google.com>
+
+	PR go/51874
+	* go.test/go-test.exp (go-gc-tests): Don't run nilptr test on
+	SPARC Solaris.  Don't run the test at all on systems where it may
+	not work, rather than xfailing it.
+
 2012-02-11  Richard Sandiford  <rdsandiford@googlemail.com>
 
 	PR rtl-optimization/52175

gcc/testsuite/go.test/go-test.exp

@@ -302,9 +302,9 @@ proc go-gc-tests { } {
 	}
 
 	# Handle certain tests in a target-dependant way.
-	if [istarget "alpha*-*-*"] {
+	if { [istarget "alpha*-*-*"] || [istarget "sparc*-*-solaris*"] } {
 	    if { [string match "*go.test/test/nilptr.go" $test] } {
-		go-execute-xfail $test
+		untested $test
 		continue
 	    }
 	}