Add `set print array-indexes' tests for C/C++ arrays

Add `set print array-indexes' tests for C/C++ arrays, complementing one
for Fortran arrays.

3 files changed, 217 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.base/array-indices.exp b/gdb/testsuite/gdb.base/array-indices.exp
new file mode 100644
index 0000000..e2b0b9b
--- /dev/null
+++ b/gdb/testsuite/gdb.base/array-indices.exp
@@ -0,0 +1,20 @@
+# 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/>.
+
+# Test the printing of element indices in C arrays.
+
+set lang c
+
+source $srcdir/$subdir/array-indices.exp.tcl
diff --git a/gdb/testsuite/gdb.base/array-indices.exp.tcl b/gdb/testsuite/gdb.base/array-indices.exp.tcl
new file mode 100644
index 0000000..6f18e4c
--- /dev/null
+++ b/gdb/testsuite/gdb.base/array-indices.exp.tcl
@@ -0,0 +1,175 @@
+# 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/>.
+
+# Test the printing of element indices in C/C++ arrays.
+
+standard_testfile ${srcdir}/gdb.base/array-repeat.c
+
+if {[prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} \
+	[list debug ${lang}]]} {
+    return -1
+}
+
+gdb_test_no_output "set print array-indexes on"
+
+if {![runto_main]} {
+    perror "Could not run to main."
+    continue
+}
+
+gdb_breakpoint [gdb_get_line_number "Break here"]
+gdb_continue_to_breakpoint "Break here"
+
+# Build up the expected output for each array.
+set n0    {[0]}
+set n1    {[1]}
+set n2    {[2]}
+set n3    {[3]}
+set n4    {[4]}
+set n5    {[5]}
+set a9p9o "{$n0 = 9, $n1 = 9, $n2 = 9, $n3 = 9, $n4 = 9, $n5 = 9}"
+set a1p   "{$n0 = 1, $n1 = 1, $n2 = 1, $n3 = 1, $n4 = 1}"
+set a1p9  "{$n0 = 1, $n1 = 1, $n2 = 1, $n3 = 1, $n4 = 1, $n5 = 9}"
+set a2po  "{$n0 = 2, $n1 = 2, $n2 = 2, $n3 = 2, $n4 = 2}"
+set a2p   "{$n0 = ${a2po}, $n1 = ${a2po}, $n2 = ${a2po}, $n3 = ${a2po},\
+	    $n4 = ${a2po}}"
+set a2p9o "{$n0 = 2, $n1 = 2, $n2 = 2, $n3 = 2, $n4 = 2, $n5 = 9}"
+set a2p9  "{$n0 = ${a2p9o}, $n1 = ${a2p9o}, $n2 = ${a2p9o}, $n3 = ${a2p9o},\
+	    $n4 = ${a2p9o}, $n5 = ${a9p9o}}"
+set a3po  "{$n0 = 3, $n1 = 3, $n2 = 3, $n3 = 3, $n4 = 3}"
+set a3p   "{$n0 = ${a3po}, $n1 = ${a3po}, $n2 = ${a3po}, $n3 = ${a3po},\
+	    $n4 = ${a3po}}"
+set a3p   "{$n0 = ${a3p}, $n1 = ${a3p}, $n2 = ${a3p}, $n3 = ${a3p},\
+	    $n4 = ${a3p}}"
+set a3p9o "{$n0 = 3, $n1 = 3, $n2 = 3, $n3 = 3, $n4 = 3, $n5 = 9}"
+set a3p9  "{$n0 = ${a3p9o}, $n1 = ${a3p9o}, $n2 = ${a3p9o}, $n3 = ${a3p9o},\
+	    $n4 = ${a3p9o}, $n5 = ${a9p9o}}"
+set a9p9  "{$n0 = ${a9p9o}, $n1 = ${a9p9o}, $n2 = ${a9p9o}, $n3 = ${a9p9o},\
+	    $n4 = ${a9p9o}, $n5 = ${a9p9o}}"
+set a3p9  "{$n0 = ${a3p9}, $n1 = ${a3p9}, $n2 = ${a3p9}, $n3 = ${a3p9},\
+	    $n4 = ${a3p9}, $n5 = ${a9p9}}"
+
+# Convert the output into a regexp.
+set r1p   [string_to_regexp $a1p]
+set r1p9  [string_to_regexp $a1p9]
+set r2po  [string_to_regexp $a2po]
+set r2p9o [string_to_regexp $a2p9o]
+set r2p   [string_to_regexp $a2p]
+set r2p9  [string_to_regexp $a2p9]
+set r3po  [string_to_regexp $a3po]
+set r3p9o [string_to_regexp $a3p9o]
+set r3p   [string_to_regexp $a3p]
+set r3p9  [string_to_regexp $a3p9]
+
+set rep5  "<repeats 5 times>"
+set rep6  "<repeats 6 times>"
+
+with_test_prefix "repeats=unlimited, elements=unlimited" {
+    # Check the arrays print as expected.
+    gdb_test_no_output "set print repeats unlimited"
+    gdb_test_no_output "set print elements unlimited"
+
+    gdb_test "print array_1d"  "${r1p}"
+    gdb_test "print array_1d9" "${r1p9}"
+    gdb_test "print array_2d"  "${r2p}"
+    gdb_test "print array_2d9" "${r2p9}"
+    gdb_test "print array_3d"  "${r3p}"
+    gdb_test "print array_3d9" "${r3p9}"
+}
+
+with_test_prefix "repeats=4, elements=unlimited" {
+    # Now set the repeat limit.
+    gdb_test_no_output "set print repeats 4"
+    gdb_test_no_output "set print elements unlimited"
+
+    gdb_test "print array_1d" \
+	[string_to_regexp "{$n0 = 1 ${rep5}}"]
+    gdb_test "print array_1d9" \
+	[string_to_regexp "{$n0 = 1 ${rep5}, $n5 = 9}"]
+    gdb_test "print array_2d" \
+	[string_to_regexp "{$n0 = {$n0 = 2 ${rep5}} ${rep5}}"]
+    gdb_test "print array_2d9" \
+	[string_to_regexp "{$n0 = {$n0 = 2 ${rep5}, $n5 = 9} ${rep5},\
+			    $n5 = {$n0 = 9 ${rep6}}}"]
+    gdb_test "print array_3d" \
+	[string_to_regexp "{$n0 = {$n0 = {$n0 = 3 ${rep5}} ${rep5}} ${rep5}}"]
+    gdb_test "print array_3d9" \
+	[string_to_regexp "{$n0 = {$n0 = {$n0 = 3 ${rep5}, $n5 = 9} ${rep5},\
+				   $n5 = {$n0 = 9 ${rep6}}} ${rep5},\
+			    $n5 = {$n0 = {$n0 = 9 ${rep6}} ${rep6}}}"]
+}
+
+with_test_prefix "repeats=unlimited, elements=3" {
+    # Now set the element limit.
+    gdb_test_no_output "set print repeats unlimited"
+    gdb_test_no_output "set print elements 3"
+
+    gdb_test "print array_1d" \
+	[string_to_regexp "{$n0 = 1, $n1 = 1, $n2 = 1...}"]
+    gdb_test "print array_1d9" \
+	[string_to_regexp "{$n0 = 1, $n1 = 1, $n2 = 1...}"]
+    gdb_test "print array_2d" \
+	[string_to_regexp "{$n0 = {$n0 = 2, $n1 = 2, $n2 = 2...},\
+			    $n1 = {$n0 = 2, $n1 = 2, $n2 = 2...},\
+			    $n2 = {$n0 = 2, $n1 = 2, $n2 = 2...}...}"]
+    gdb_test "print array_2d9" \
+	[string_to_regexp "{$n0 = {$n0 = 2, $n1 = 2, $n2 = 2...},\
+			    $n1 = {$n0 = 2, $n1 = 2, $n2 = 2...},\
+			    $n2 = {$n0 = 2, $n1 = 2, $n2 = 2...}...}"]
+    gdb_test "print array_3d" \
+	[string_to_regexp "{$n0 = {$n0 = {$n0 = 3, $n1 = 3, $n2 = 3...},\
+				   $n1 = {$n0 = 3, $n1 = 3, $n2 = 3...},\
+				   $n2 = {$n0 = 3, $n1 = 3, $n2 = 3...}...},\
+			    $n1 = {$n0 = {$n0 = 3, $n1 = 3, $n2 = 3...},\
+				   $n1 = {$n0 = 3, $n1 = 3, $n2 = 3...},\
+				   $n2 = {$n0 = 3, $n1 = 3, $n2 = 3...}...},\
+			    $n2 = {$n0 = {$n0 = 3, $n1 = 3, $n2 = 3...},\
+				   $n1 = {$n0 = 3, $n1 = 3, $n2 = 3...},\
+				   $n2 = {$n0 = 3, $n1 = 3,\
+					  $n2 = 3...}...}...}"]
+    gdb_test "print array_3d9" \
+	[string_to_regexp "{$n0 = {$n0 = {$n0 = 3, $n1 = 3, $n2 = 3...},\
+				   $n1 = {$n0 = 3, $n1 = 3, $n2 = 3...},\
+				   $n2 = {$n0 = 3, $n1 = 3, $n2 = 3...}...},\
+			    $n1 = {$n0 = {$n0 = 3, $n1 = 3, $n2 = 3...},\
+				   $n1 = {$n0 = 3, $n1 = 3, $n2 = 3...},\
+				   $n2 = {$n0 = 3, $n1 = 3, $n2 = 3...}...},\
+			    $n2 = {$n0 = {$n0 = 3, $n1 = 3, $n2 = 3...},\
+				   $n1 = {$n0 = 3, $n1 = 3, $n2 = 3...},\
+				   $n2 = {$n0 = 3, $n1 = 3,\
+					  $n2 = 3...}...}...}"]
+}
+
+with_test_prefix "repeats=4, elements=12" {
+    # Now set both limits.
+    gdb_test_no_output "set print repeats 4"
+    gdb_test_no_output "set print elements 12"
+
+    gdb_test "print array_1d" \
+	[string_to_regexp "{$n0 = 1 ${rep5}}"]
+    gdb_test "print array_1d9" \
+	[string_to_regexp "{$n0 = 1 ${rep5}, $n5 = 9}"]
+    gdb_test "print array_2d" \
+	[string_to_regexp "{$n0 = {$n0 = 2 ${rep5}} ${rep5}}"]
+    gdb_test "print array_2d9" \
+	[string_to_regexp "{$n0 = {$n0 = 2 ${rep5}, $n5 = 9} ${rep5},\
+			    $n5 = {$n0 = 9 ${rep6}}}"]
+    gdb_test "print array_3d" \
+	[string_to_regexp "{$n0 = {$n0 = {$n0 = 3 ${rep5}} ${rep5}} ${rep5}}"]
+    gdb_test "print array_3d9" \
+	[string_to_regexp "{$n0 = {$n0 = {$n0 = 3 ${rep5}, $n5 = 9} ${rep5},\
+				   $n5 = {$n0 = 9 ${rep6}}} ${rep5},\
+			    $n5 = {$n0 = {$n0 = 9 ${rep6}} ${rep6}}}"]
+}
diff --git a/gdb/testsuite/gdb.cp/array-indices.exp b/gdb/testsuite/gdb.cp/array-indices.exp
new file mode 100644
index 0000000..514f6b6
--- /dev/null
+++ b/gdb/testsuite/gdb.cp/array-indices.exp
@@ -0,0 +1,22 @@
+# 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/>.
+
+# Test the printing of element indices in C++ arrays.
+
+if {[skip_cplus_tests]} { continue }
+
+set lang c++
+
+source ${srcdir}/gdb.base/array-indices.exp.tcl