Fortran: Testsuite, non-local references in nested functions.

Non-local references in nested functions are usually implemented
by using DWARF static link. This feature was added
with commit 63e43d3aedb8b1112899c2d0ad74cbbee687e5d6
(DWARF: handle non-local references in nested functions) but
a testcase was missing in Fortran.

2016-06-10  Bernhard Heckel  <bernhard.heckel@intel.com>

gdb/Testsuite/Changelog:
	* gdb.fortran/nested-funcs.exp: New.
	* gdb.fortran/nested-funcs.f90:	New.

3 files changed, 119 insertions, 0 deletions

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 19b00a1..eda7b99 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2016-06-10  Bernhard Heckel  <bernhard.heckel@intel.com>
+
+	* gdb.fortran/nested-funcs.exp: New.
+	* gdb.fortran/nested-funcs.f90: New.
+
 2016-06-09  Toshihito Kikuchi  <k.toshihito@yahoo.de>
 
 	* gdb.base/examine-backward.c: New file.
diff --git a/gdb/testsuite/gdb.fortran/nested-funcs.exp b/gdb/testsuite/gdb.fortran/nested-funcs.exp
new file mode 100755
index 0000000..976aa22
--- /dev/null
+++ b/gdb/testsuite/gdb.fortran/nested-funcs.exp
@@ -0,0 +1,64 @@
+# Copyright 2016 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/>.

+

+# This testcase is supposed to test DWARF static link which is usually

+# used together with nested functions.  

+

+if { [skip_fortran_tests] } { return -1 }

+

+standard_testfile .f90

+load_lib "fortran.exp"

+

+if {[prepare_for_testing $testfile.exp $testfile $srcfile {debug f90}]} {

+    return -1

+}

+

+if ![runto MAIN__] then {

+    perror "couldn't run to breakpoint MAIN__"

+    continue

+}

+

+# Test if we can access local and

+# non-local variables defined one level up.

+gdb_breakpoint [gdb_get_line_number "! BP_outer"]

+gdb_continue_to_breakpoint "! BP_outer" ".*! BP_outer"

+gdb_test "print index" "= 13" "print index at BP_outer"

+gdb_test "set index = 42"

+gdb_test "print index" "= 42" "print index at BP_outer, manipulated"

+gdb_test "print local_int" "= 19" "print local_int in outer function"

+

+# Non-local variable should be affected in one frame up as well.

+gdb_test "up"

+gdb_test "print index" "= 42" "print index at BP1, one frame up"

+

+# Test if we can access local and

+# non-local variables defined two level up.

+gdb_breakpoint [gdb_get_line_number "! BP_inner"]

+gdb_continue_to_breakpoint "! BP_inner" ".*! BP_inner"

+gdb_test "print index" "= 42" "print index at BP_inner"

+gdb_test "print v_state%code" "= 61" "print v_state%code at BP_inner"

+gdb_test "print local_int" "= 17" "print local_int in inner function"

+

+# Test if local variable is still correct.

+gdb_breakpoint [gdb_get_line_number "! BP_outer_2"]

+gdb_continue_to_breakpoint "! BP_outer_2" ".*! BP_outer_2"

+gdb_test "print local_int" "= 19" \

+  "print local_int in outer function, after sub_nested_inner"

+

+# Sanity check in main.

+gdb_breakpoint [gdb_get_line_number "! BP_main"]

+gdb_continue_to_breakpoint "! BP_main" ".*! BP_main"

+gdb_test "print index" "= 42" "print index at BP_main"

+gdb_test "print v_state%code" "= 59" "print v_state%code at BP_main"

diff --git a/gdb/testsuite/gdb.fortran/nested-funcs.f90 b/gdb/testsuite/gdb.fortran/nested-funcs.f90
new file mode 100755
index 0000000..5501b3b
--- /dev/null
+++ b/gdb/testsuite/gdb.fortran/nested-funcs.f90
@@ -0,0 +1,50 @@
+! Copyright 2016 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/>.

+

+program TestNestedFuncs

+

+  IMPLICIT NONE

+

+  TYPE :: t_State

+    integer :: code

+  END TYPE t_State

+

+  TYPE (t_State) :: v_state

+  integer index

+

+  index = 13

+  CALL sub_nested_outer

+  index = 11              ! BP_main

+  v_state%code = 27

+

+CONTAINS

+

+  SUBROUTINE sub_nested_outer

+    integer local_int

+    local_int = 19

+    v_state%code = index + local_int   ! BP_outer

+    call sub_nested_inner

+    local_int = 22                     ! BP_outer_2

+    RETURN

+  END SUBROUTINE sub_nested_outer

+

+  SUBROUTINE sub_nested_inner

+    integer local_int

+    local_int = 17

+    v_state%code = index + local_int   ! BP_inner

+    RETURN

+  END SUBROUTINE sub_nested_inner

+

+end program TestNestedFuncs