Add test case for "finish" with variably-sized types

This adds a test case for "finish" with variably-sized types, and for
inferior calls as well.  This also extends the "runto" proc to handle
temporary breakpoints.

Author: tromey

gdb/testsuite/gdb.ada/finish-var-size.exp

@@ -0,0 +1,43 @@
+# Copyright 2022 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"
+
+if { [skip_ada_tests] } { return -1 }
+
+# GCC 12 has the needed fix.
+if {![test_compiler_info {gcc-1[2-9]-*}]} {
+    untested "GCC too told for this test"
+    return -1
+}
+
+standard_ada_testfile p
+
+if {[gdb_compile_ada "${srcfile}" "${binfile}" executable debug] != ""} {
+  return -1
+}
+
+clean_restart ${testfile}
+runto "pck.get" temporary
+
+set value [string_to_regexp "= (defined => true, payload => true)"]
+
+# With some ABIs the return value cannot be determined.  Accept this,
+# or the correct result.
+gdb_test "finish" \
+         "Value returned .*($value|Cannot determine contents)"
+
+# Test that an inferior call yields the correct result.
+gdb_test "print pck.get(True)" $value

gdb/testsuite/gdb.ada/finish-var-size/p.adb

@@ -0,0 +1,21 @@
+--  Copyright 2022 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 P is
+  V : Result_T := Get (True);
+begin
+  null;
+end P;

gdb/testsuite/gdb.ada/finish-var-size/pck.adb

@@ -0,0 +1,21 @@
+--  Copyright 2022 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 body Pck is
+  function Get (Value: Boolean) return Result_T is
+  begin
+    return (Defined => True, Payload => Value);
+  end Get;
+end Pck;

gdb/testsuite/gdb.ada/finish-var-size/pck.ads

@@ -0,0 +1,36 @@
+--  Copyright 2022 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
+  type Array_Type is array (1 .. 64) of Integer;
+
+  type Maybe_Array (Defined : Boolean := False) is
+    record
+      Arr : Array_Type;
+      Arr2 : Array_Type;
+    end record;
+
+  type Result_T (Defined : Boolean := False) is
+    record
+      case Defined is
+        when False =>
+	  Arr : Maybe_Array;
+        when True =>
+          Payload : Boolean;
+      end case;
+    end record;
+
+  function Get (Value: Boolean) return Result_T;
+end Pck;

gdb/testsuite/lib/gdb.exp

@@ -743,13 +743,13 @@ proc runto { linespec args } {
     # the "at foo.c:36" output we get with -g.
     # the "in func" output we get without -g.
     gdb_expect 30 {
-	-re "Break.* at .*:$decimal.*$gdb_prompt $" {
+	-re "(?:Break|Temporary break).* at .*:$decimal.*$gdb_prompt $" {
 	    if { $print_pass } {
 		pass $test_name
 	    }
 	    return 1
 	}
-	-re "Breakpoint $bkptno_numopt_re, \[0-9xa-f\]* in .*$gdb_prompt $" {
+	-re "(?:Breakpoint|Temporary breakpoint) $bkptno_numopt_re, \[0-9xa-f\]* in .*$gdb_prompt $" {
 	    if { $print_pass } {
 		pass $test_name
 	    }