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[PATCH 2/2] Allow really large fortran array bounds: fortran type/value printers
- From: Keith Seitz <keiths at redhat dot com>
- To: gdb-patches at sourceware dot org
- Cc: sergiodj at redhat dot com
- Date: Fri, 15 Mar 2019 13:25:50 -0700
- Subject: [PATCH 2/2] Allow really large fortran array bounds: fortran type/value printers
- References: <20190315202550.9741-1-keiths@redhat.com>
This is the fortran part of the patch, including tests, which
are essentially unchanged from Siddhesh's original 2012 submission:
https://sourceware.org/ml/gdb-patches/2012-08/msg00562.html
There is, however, one large departure. In the above thread,
Jan pointed out problems with GCC debuginfo for -m32 builds
(filed usptream as gcc/54934). After investigating the issue,
I am dropping the hand-tweaked assembler source file to workaround
this case.
While I would normally do something to accommodate this, in
this case, given the ubiquity of 64-bit systems today (where
the tests pass) and the apparent lack of urgency on the compiler
side (by users), I don't think the additional complexity and
maintenance costs are worth it. It will be very routinely tested
on 64-bit systems. [For example, at Red Hat, we always
test -m64 and -m32 configurations for all GDB releases.]
gdb/ChangeLog:
From Siddhesh Poyarekar:
* f-lang.h (f77_get_upperbound): Return LONGEST.
(f77_get_lowerbound): Likewise.
* f-typeprint.c (f_type_print_varspec_suffix): Expand
UPPER_BOUND and LOWER_BOUND to LONGEST. Use plongest to format
print them.
(f_type_print_base): Expand UPPER_BOUND to LONGEST. Use
plongest to format print it.
* f-valprint.c (f77_get_lowerbound): Return LONGEST.
(f77_get_upperbound): Likewise.
(f77_get_dynamic_length_of_aggregate): Expand UPPER_BOUND,
LOWER_BOUND to LONGEST.
(f77_create_arrayprint_offset_tbl): Likewise.
testsuite/ChangeLog:
* gdb.fortran/array-bounds.exp: New file.
* gdb.fortran/array-bounds.f90: New file.
---
gdb/f-lang.h | 4 +-
gdb/f-typeprint.c | 18 ++++----
gdb/f-valprint.c | 4 +-
gdb/testsuite/gdb.fortran/array-bounds.exp | 50 ++++++++++++++++++++++
gdb/testsuite/gdb.fortran/array-bounds.f90 | 26 +++++++++++
5 files changed, 89 insertions(+), 13 deletions(-)
create mode 100644 gdb/testsuite/gdb.fortran/array-bounds.exp
create mode 100644 gdb/testsuite/gdb.fortran/array-bounds.f90
diff --git a/gdb/f-lang.h b/gdb/f-lang.h
index 746c11fd9f..1ba529d76c 100644
--- a/gdb/f-lang.h
+++ b/gdb/f-lang.h
@@ -50,9 +50,9 @@ struct common_block
struct symbol *contents[1];
};
-extern int f77_get_upperbound (struct type *);
+extern LONGEST f77_get_upperbound (struct type *);
-extern int f77_get_lowerbound (struct type *);
+extern LONGEST f77_get_lowerbound (struct type *);
extern void f77_get_dynamic_array_length (struct type *);
diff --git a/gdb/f-typeprint.c b/gdb/f-typeprint.c
index 2dfae5803c..a0e34b3058 100644
--- a/gdb/f-typeprint.c
+++ b/gdb/f-typeprint.c
@@ -161,8 +161,6 @@ f_type_print_varspec_suffix (struct type *type, struct ui_file *stream,
int show, int passed_a_ptr, int demangled_args,
int arrayprint_recurse_level)
{
- int upper_bound, lower_bound;
-
/* No static variables are permitted as an error call may occur during
execution of this function. */
@@ -192,9 +190,10 @@ f_type_print_varspec_suffix (struct type *type, struct ui_file *stream,
f_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0,
0, 0, arrayprint_recurse_level);
- lower_bound = f77_get_lowerbound (type);
+ LONGEST lower_bound = f77_get_lowerbound (type);
+
if (lower_bound != 1) /* Not the default. */
- fprintf_filtered (stream, "%d:", lower_bound);
+ fprintf_filtered (stream, "%s:", plongest (lower_bound));
/* Make sure that, if we have an assumed size array, we
print out a warning and print the upperbound as '*'. */
@@ -203,8 +202,9 @@ f_type_print_varspec_suffix (struct type *type, struct ui_file *stream,
fprintf_filtered (stream, "*");
else
{
- upper_bound = f77_get_upperbound (type);
- fprintf_filtered (stream, "%d", upper_bound);
+ LONGEST upper_bound = f77_get_upperbound (type);
+
+ fputs_filtered (plongest (upper_bound), stream);
}
if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_ARRAY)
@@ -273,7 +273,6 @@ void
f_type_print_base (struct type *type, struct ui_file *stream, int show,
int level)
{
- int upper_bound;
int index;
QUIT;
@@ -364,8 +363,9 @@ f_type_print_base (struct type *type, struct ui_file *stream, int show,
fprintfi_filtered (level, stream, "character*(*)");
else
{
- upper_bound = f77_get_upperbound (type);
- fprintf_filtered (stream, "character*%d", upper_bound);
+ LONGEST upper_bound = f77_get_upperbound (type);
+
+ fprintf_filtered (stream, "character*%s", pulongest (upper_bound));
}
break;
diff --git a/gdb/f-valprint.c b/gdb/f-valprint.c
index eee0a62fe8..5f9dd4dedb 100644
--- a/gdb/f-valprint.c
+++ b/gdb/f-valprint.c
@@ -41,7 +41,7 @@ int f77_array_offset_tbl[MAX_FORTRAN_DIMS + 1][2];
/* Array which holds offsets to be applied to get a row's elements
for a given array. Array also holds the size of each subarray. */
-int
+LONGEST
f77_get_lowerbound (struct type *type)
{
if (TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type))
@@ -50,7 +50,7 @@ f77_get_lowerbound (struct type *type)
return TYPE_ARRAY_LOWER_BOUND_VALUE (type);
}
-int
+LONGEST
f77_get_upperbound (struct type *type)
{
if (TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))
diff --git a/gdb/testsuite/gdb.fortran/array-bounds.exp b/gdb/testsuite/gdb.fortran/array-bounds.exp
new file mode 100644
index 0000000000..e18530c75e
--- /dev/null
+++ b/gdb/testsuite/gdb.fortran/array-bounds.exp
@@ -0,0 +1,50 @@
+# Copyright 2012-2019 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 file is part of the gdb testsuite. It contains test to ensure that
+# array bounds accept LONGEST.
+
+if { [skip_fortran_tests] } { return -1 }
+
+set testfile "array-bounds"
+standard_testfile .f90
+
+if {[prepare_for_testing $testfile.exp $testfile $srcfile {f90 debug}]} {
+ return -1
+}
+
+if {![runto MAIN__]} {
+ perror "Could not run to breakpoint `MAIN__'."
+ continue
+}
+
+# Convenience proc to setup for KFAIL
+proc kfail_if {exp bugid triplet} {
+ if {$exp} {
+ setup_kfail $bugid $triplet
+ }
+}
+
+# GCC outputs incorrect range debug info for -m32.
+set expect_fail false
+if {[is_ilp32_target] && ([istarget "i\[34567\]86-*-linux*"]
+ || [istarget "x86_64-*-linux*"])} {
+ set expect_fail true
+}
+
+kfail_if $expect_fail "gcc/54934" "*-*-*"
+gdb_test "print &foo" {.*\(4294967296:4294967297\).*}
+kfail_if $expect_fail "gcc/54934" "*-*-*"
+gdb_test "print &bar" {.*\(-4294967297:-4294967296\).*}
diff --git a/gdb/testsuite/gdb.fortran/array-bounds.f90 b/gdb/testsuite/gdb.fortran/array-bounds.f90
new file mode 100644
index 0000000000..ec3c4691ac
--- /dev/null
+++ b/gdb/testsuite/gdb.fortran/array-bounds.f90
@@ -0,0 +1,26 @@
+! Copyright 2012-2019 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/>.
+
+ dimension foo(4294967296_8:4294967297_8)
+ dimension bar(-4294967297_8:-4294967296_8)
+ integer(8) :: lb, ub
+ bar = 42
+ foo = bar
+ lb = lbound (foo, dim = 1, kind = 8)
+ ub = ubound (foo, dim = 1, kind = 8)
+ print *, 'bounds of foo - ', lb, ':', ub
+ stop
+ end
+
--
2.20.1