target-supports.exp (check_missing_uclibc_feature): Don't assume that the target has <features.h>.

gcc/testsuite/
	* lib/target-supports.exp (check_missing_uclibc_feature): Don't
	assume that the target has <features.h>.

From-SVN: r122983

gcc/testsuite/ChangeLog

 2007-03-16  Richard Sandiford  <richard@codesourcery.com>
 
+	* lib/target-supports.exp (check_missing_uclibc_feature): Don't
+	assume that the target has <features.h>.
+
+2007-03-16  Richard Sandiford  <richard@codesourcery.com>
+
 	* gcc.dg/20020426-2.c: Add the fpic requirement to the PIC
 	dg-options rather than to the whole test.
 

gcc/testsuite/lib/target-supports.exp

@@ -2077,15 +2077,12 @@ proc check_effective_target_uclibc {} {
 # described by __$feature__ is not present.
 
 proc check_missing_uclibc_feature {feature} {
-    if {[check_no_compiler_messages $feature object "
+    return [check_no_compiler_messages $feature object "
 	#include <features.h>
-	     #if defined (__UCLIBC__) && !defined (__${feature}__)
+	#if !defined (__UCLIBC) || !defined (__${feature}__)
 	#error FOO
 	#endif
-	 "]} {
-	return 0
-    }
-    return 1
+    "]
 }
 
 # Return true if this is a Newlib target.