(Ada/MI) Add testcase for mi catch assert with condition

gdb/testsuite/ChangeLog:

    * gdb.ada/mi_catch_assert.exp: New testcase.
    * gdb.ada/mi_catch_assert/bla.adb: New file.
    * gdb.ada/mi_catch_assert/pck.ads: New file.

Tested on x86_64-linux.

gdb/testsuite/gdb.ada/mi_catch_assert.exp

@@ -0,0 +1,96 @@
+# Copyright 2011-2018 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+load_lib "ada.exp"
+
+standard_ada_testfile bla
+
+if {[gdb_compile_ada "${srcfile}" "${binfile}" executable [list debug additional_flags=-gnata ]] != "" } {
+  return -1
+}
+
+# Some global variables used to simplify the maintenance of some of
+# the regular expressions below.
+set eol "\[\r\n\]+"
+set sp "\[ \t\]*"
+
+# Before going any further, verify that we can insert exception
+# catchpoints...  That way, we won't have to do this while doing
+# the actual GDB/MI testing.
+
+clean_restart ${testfile}
+
+if ![runto_main] then {
+   fail "cannot run to main, testcase aborted"
+   return 0
+}
+
+set msg "insert catchpoint on all Ada exceptions"
+gdb_test_multiple "catch exception" $msg {
+    -re "Catchpoint $decimal: all Ada exceptions$eol$gdb_prompt $" {
+	pass $msg
+    }
+    -re "Your Ada runtime appears to be missing some debugging information.*\[\r\n\]+$gdb_prompt $" {
+	# If the runtime was not built with enough debug information,
+	# or if it was stripped, we can not test exception
+	# catchpoints.
+	unsupported $msg
+	return -1
+    }
+}
+
+# Now, we can start the GDB/MI testing itself...
+
+load_lib mi-support.exp
+set MIFLAGS "-i=mi"
+
+gdb_exit
+if [mi_gdb_start] {
+    continue
+}
+
+mi_delete_breakpoints
+mi_gdb_reinitialize_dir $srcdir/$subdir
+mi_gdb_load ${binfile}
+
+###################################################
+# 2. Try catching conditionnal failed assertion.  #
+###################################################
+
+# Here is the scenario:
+#  - Restart the debugger from scratch, runto_main
+#    We'll catch assertions if Global_Var = 2
+#  - continue, we should see the second failed assertion
+#  - continue, the program exits.
+
+if ![mi_run_to_main] then {
+   fail "cannot run to main, testcase aborted"
+   return 0
+}
+
+mi_gdb_test "-catch-assert -c \"Global_Var = 2\"" \
+            "\\^done,bkptno=\"$decimal\",bkpt={.*disp=\"keep\",enabled=\"y\",addr=\"$hex\",what=\"failed Ada assertions\",.*,cond=\"Global_Var = 2\",.*}" \
+            "catch assert failures with condition"
+
+set bp_location [gdb_get_line_number "STOP" ${testdir}/bla.adb]
+mi_execute_to "exec-continue" \
+              "breakpoint-hit\",disp=\"keep\",bkptno=\"$decimal" \
+              "bla" "" ".*" "$bp_location" \
+              ".*" \
+              "continue to assert failure catchpoint hit"
+
+# Exit the inferior.
+mi_send_resuming_command "exec-continue" "continuing to inferior exit"
+mi_expect_stop "exited-normally" "" "" "" "" "" "exit normally"

gdb/testsuite/gdb.ada/mi_catch_assert/bla.adb

@@ -0,0 +1,46 @@
+--  Copyright 2018 Free Software Foundation, Inc.
+--
+--  This program is free software; you can redistribute it and/or modify
+--  it under the terms of the GNU General Public License as published by
+--  the Free Software Foundation; either version 3 of the License, or
+--  (at your option) any later version.
+--
+--  This program is distributed in the hope that it will be useful,
+--  but WITHOUT ANY WARRANTY; without even the implied warranty of
+--  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+--  GNU General Public License for more details.
+--
+--  You should have received a copy of the GNU General Public License
+--  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+with Pck; use Pck;
+
+procedure Bla is
+begin
+   Global_Var := 1;
+   declare
+   begin
+      pragma Assert (Global_Var /= 1, "Error #1");
+   exception
+      when others =>
+         null;
+   end;
+
+   Global_Var := 2;
+   declare
+   begin
+      pragma Assert (Global_Var = 1, "Error #2"); -- STOP
+   exception
+      when others =>
+         null;
+   end;
+
+   Global_Var := 3;
+   declare
+   begin
+      pragma Assert (Global_Var = 2, "Error #3");
+   exception
+      when others =>
+         null;
+   end;
+end Bla;

gdb/testsuite/gdb.ada/mi_catch_assert/pck.ads

@@ -0,0 +1,19 @@
+--  Copyright 2018 Free Software Foundation, Inc.
+--
+--  This program is free software; you can redistribute it and/or modify
+--  it under the terms of the GNU General Public License as published by
+--  the Free Software Foundation; either version 3 of the License, or
+--  (at your option) any later version.
+--
+--  This program is distributed in the hope that it will be useful,
+--  but WITHOUT ANY WARRANTY; without even the implied warranty of
+--  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+--  GNU General Public License for more details.
+--
+--  You should have received a copy of the GNU General Public License
+--  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package Pck is
+   Global_Var : Integer := 0;
+end Pck;
+