I forgot to cc list in my previous message to the thread so Ulrich's 
reply was only to me. In summary I concluded that this was a compiler 
issue and Ulrich agreed that marking the test as known failure with 
gcc's earlier than gcc 44 would be appropriate.

Here is a ptach:

2010-03-29  Sami Wagiaalla  <swagiaal@redhat.com>

	* gdb.cp/nsusing.exp: Marked imported declaration test as xfail with
	gcc < 4.4.
	* gdb.cp/shadow.exp: Ditto.


diff --git a/gdb/testsuite/gdb.cp/nsusing.exp b/gdb/testsuite/gdb.cp/nsusing.exp
index b060ee2..090cbd4 100644
--- a/gdb/testsuite/gdb.cp/nsusing.exp
+++ b/gdb/testsuite/gdb.cp/nsusing.exp
@@ -206,5 +206,7 @@ if ![runto_main] then {
 gdb_breakpoint [gdb_get_line_number "marker10 stop"]
 gdb_continue_to_breakpoint "marker10 stop"
 
+if { [test_compiler_info {gcc-[0-3]-*}] ||
+     [test_compiler_info {gcc-4-[0-3]-*}]} { setup_xfail *-*-* }
 # Assert that M::x is printed and not N::x
 gdb_test "print x" "= 911" "print x (from M::x)"
diff --git a/gdb/testsuite/gdb.cp/shadow.exp b/gdb/testsuite/gdb.cp/shadow.exp
index 40c35a4..b5b8aad 100644
--- a/gdb/testsuite/gdb.cp/shadow.exp
+++ b/gdb/testsuite/gdb.cp/shadow.exp
@@ -31,6 +31,10 @@ if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {deb
     return -1
 }
 
+if [get_compiler_info ${binfile}] {
+    return -1
+}
+
 # Get things started.
 
 gdb_exit
@@ -85,4 +89,7 @@ gdb_test "print x" "= 55" "Print local x not namespace x"
 gdb_breakpoint [gdb_get_line_number "marker5"]
 gdb_continue_to_breakpoint "marker5"
 
+if { [test_compiler_info {gcc-[0-3]-*}] ||
+     [test_compiler_info {gcc-4-[0-3]-*}]} { setup_xfail *-*-* }
+
 gdb_test "print x" "= 11" "Print imported namespace x"