run_acats (which): Assign output to temporary variable, only use if successful.

	* ada/acats/run_acats (which): Assign output to temporary
	variable, only use if successful.
	Use last field of type output.

From-SVN: r167499

gcc/testsuite/ChangeLog

+2010-12-06  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	* ada/acats/run_acats (which): Assign output to temporary
+	variable, only use if successful.
+	Use last field of type output.
+
 2010-12-06  Richard Guenther  <rguenther@suse.de>
 
 	PR tree-optimization/46806

gcc/testsuite/ada/acats/run_acats

@@ -14,9 +14,9 @@ fi
 # Fall back to whence which ksh88 and ksh93 provide, but bash does not.
 
 which () {
-    type -p $* 2>/dev/null && return 0
-    type $* 2>/dev/null | awk '{print $3}' && return 0
-    whence $* 2>/dev/null && return 0
+    path=`type -p $* 2>/dev/null` && { echo $path; return 0; }
+    path=`type $* 2>/dev/null | awk '{print $NF}'` && { echo $path; return 0; }
+    path=`whence $* 2>/dev/null` && { echo $path; return 0; }
     return 1
 }