[PATCH v4 4/8] GDB/testsuite: Tighten `set print elements' error check

["Maciej W. Rozycki" <macro@embecosm.com>]

Match the whole error message expected to be given rather than omitting 
the part about the "unlimited" keyword.  There's no point in omitting 
the missing part first, and second with an upcoming change the part in 
parentheses will no longer be a fixed string, so doing a full match will 
ensure the algorithm correctly builds the message expected here.  Also 
avoid any wildcard matches.
---
New change in v4.
---
 gdb/testsuite/gdb.base/default.exp |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

gdb-test-set-print-elements-tightening.diff
Index: src/gdb/testsuite/gdb.base/default.exp
===================================================================
--- src.orig/gdb/testsuite/gdb.base/default.exp
+++ src/gdb/testsuite/gdb.base/default.exp
@@ -525,7 +525,8 @@ gdb_test_no_output "set print asm-demang
 #test set print demangle
 gdb_test_no_output "set print demangle" "set print demangle"
 #test set print elements
-gdb_test "set print elements" "Argument required .integer to set it to.*"
+gdb_test "set print elements" \
+	 "Argument required \\(integer to set it to, or \"unlimited\"\\)\\."
 #test set print object
 gdb_test_no_output "set print object" "set print object"
 #test set print pretty