re PR middle-end/41496 (Many regressions on trunk)

2009-09-29  H.J. Lu  <hongjiu.lu@intel.com>

	PR testsuite/41496
	* g++.dg/dfp/dfp.exp: Unset DEFAULT_CXXFLAGS if it didn't exist
	before.

From-SVN: r152287

gcc/testsuite/ChangeLog

+2009-09-29  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR testsuite/41496
+	* g++.dg/dfp/dfp.exp: Unset DEFAULT_CXXFLAGS if it didn't exist
+	before.
+
 2009-09-29  Janis Johnson  <janis187@us.ibm.com>
 
 	* gcc.test-framework/dg-bogus-exp-XF.c: Move dg-bogus directive.

gcc/testsuite/g++.dg/dfp/dfp.exp

@@ -62,4 +62,6 @@ set dg-do-what-default ${save-dg-do-what-default}
 verbose "dfp.exp: dg-do-what-default is ${dg-do-what-default}" 2
 if [info exists save_default_cxxflags] {
   set DEFAULT_CXXFLAGS $save_default_cxxflags
+} else {
+  unset DEFAULT_CXXFLAGS
 }