[PATCH v3 12/13] test: basic c99 vla tests for C primitives

[Sanimir Agovic <sanimir dot agovic at intel dot com>]

2013-10-18  Keven Boell  <keven.boell@intel.com>
            Sanimir Agovic  <sanimir.agovic@intel.com>

gdb/testsuite:
	* gdb.base/vla-datatypes.c: New. Test source file
	for VLA datatype checks.
	* gdb.base/vla-datatypes.exp: New. Tests ensure that
	a VLA in C can be evaluated correctly with standard
	C types.

Change-Id: I7e9ac796ac7e9afa983d60e6d4b506017e4afe54
Signed-off-by: Sanimir Agovic <sanimir.agovic@intel.com>
---
 gdb/testsuite/gdb.base/vla-datatypes.c   |  86 +++++++++++++++++++
 gdb/testsuite/gdb.base/vla-datatypes.exp | 138 +++++++++++++++++++++++++++++++
 2 files changed, 224 insertions(+)
 create mode 100644 gdb/testsuite/gdb.base/vla-datatypes.c
 create mode 100644 gdb/testsuite/gdb.base/vla-datatypes.exp

diff --git a/gdb/testsuite/gdb.base/vla-datatypes.c b/gdb/testsuite/gdb.base/vla-datatypes.c
new file mode 100644
index 0000000..267d239
--- /dev/null
+++ b/gdb/testsuite/gdb.base/vla-datatypes.c
@@ -0,0 +1,86 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2013 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/>.  */
+
+#include <stddef.h>
+#define SIZE 5
+
+struct foo
+{
+  int a;
+};
+
+typedef struct bar
+{
+  int x;
+  struct foo y;
+} BAR;
+
+void
+vla_factory (int n)
+{
+  int             int_vla[n];
+  unsigned int    unsigned_int_vla[n];
+  double          double_vla[n];
+  float           float_vla[n];
+  long            long_vla[n];
+  unsigned long   unsigned_long_vla[n];
+  char            char_vla[n];
+  short           short_vla[n];
+  unsigned short  unsigned_short_vla[n];
+  unsigned char   unsigned_char_vla[n];
+  struct foo      foo_vla[n];
+  BAR             bar_vla[n];
+  int i;
+
+  for (i = 0; i < n; i++)
+    {
+      int_vla[i] = i*2;
+      unsigned_int_vla[i] = i*2;
+      double_vla[i] = i/2.0;
+      float_vla[i] = i/2.0f;
+      long_vla[i] = i*2;
+      unsigned_long_vla[i] = i*2;
+      char_vla[i] = 'A';
+      short_vla[i] = i*2;
+      unsigned_short_vla[i] = i*2;
+      unsigned_char_vla[i] = 'A';
+      foo_vla[i].a = i*2;
+      bar_vla[i].x = i*2;
+      bar_vla[i].y.a = i*2;
+    }
+
+  size_t int_size        = sizeof(int_vla);     /* vlas_filled */
+  size_t uint_size       = sizeof(unsigned_int_vla);
+  size_t double_size     = sizeof(double_vla);
+  size_t float_size      = sizeof(float_vla);
+  size_t long_size       = sizeof(long_vla);
+  size_t char_size       = sizeof(char_vla);
+  size_t short_size      = sizeof(short_vla);
+  size_t ushort_size     = sizeof(unsigned_short_vla);
+  size_t uchar_size      = sizeof(unsigned_char_vla);
+  size_t foo_size        = sizeof(foo_vla);
+  size_t bar_size        = sizeof(bar_vla);
+
+  return;                                 /* break_end_of_vla_factory */
+}
+
+int
+main ()
+{
+  vla_factory(SIZE);
+  return 0;
+}
diff --git a/gdb/testsuite/gdb.base/vla-datatypes.exp b/gdb/testsuite/gdb.base/vla-datatypes.exp
new file mode 100644
index 0000000..c251709
--- /dev/null
+++ b/gdb/testsuite/gdb.base/vla-datatypes.exp
@@ -0,0 +1,138 @@
+# Copyright 2013 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/>.
+
+standard_testfile ".c"
+if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile}] } {
+    return -1
+}
+
+if ![runto_main] {
+    return -1
+}
+
+gdb_breakpoint [gdb_get_line_number "vlas_filled"]
+gdb_continue_to_breakpoint "vlas_filled"
+
+# Check the values of VLA's.
+gdb_test "print int_vla" "\\$\\d+ = \\\{0, 2, 4, 6, 8\\\}" \
+         "print int_vla"
+gdb_test "print unsigned_int_vla" "\\$\\d+ = \\\{0, 2, 4, 6, 8\\\}" \
+         "print unsigned_int_vla"
+gdb_test "print double_vla" "\\$\\d+ = \\\{0, 0.5, 1, 1.5, 2\\\}" \
+         "print double_vla"
+gdb_test "print float_vla" "\\$\\d+ = \\\{0, 0.5, 1, 1.5, 2\\\}" \
+         "print float_vla"
+gdb_test "print long_vla" "\\$\\d+ = \\\{0, 2, 4, 6, 8\\\}" \
+         "print long_vla"
+gdb_test "print unsigned_long_vla" "\\$\\d+ = \\\{0, 2, 4, 6, 8\\\}" \
+         "print unsigned_long_vla"
+gdb_test "print char_vla" "\\$\\d+ = \"AAAAA\"" \
+         "print char_vla"
+gdb_test "print short_vla" "\\$\\d+ = \\\{0, 2, 4, 6, 8\\\}" \
+         "print short_vla"
+gdb_test "print unsigned_short_vla" "\\$\\d+ = \\\{0, 2, 4, 6, 8\\\}" \
+         "print unsigned_short_vla"
+gdb_test "print unsigned_char_vla" "\\$\\d+ = \"AAAAA\"" \
+         "print unsigned_char_vla"
+gdb_test "print foo_vla" \
+         "\\\{\\\{a = 0\\\}, \\\{a = 2\\\}, \\\{a = 4\\\}, \\\{a = 6\\\}, \\\{a = 8\\\}\\\}" \
+         "print foo_vla"
+gdb_test "print bar_vla" \
+         "\\\{\\\{x = 0, y = \\\{a = 0\\\}\\\}, \\\{x = 2, y = \\\{a = 2\\\}\\\}, \\\{x = 4, y = \\\{a = 4\\\}\\\}, \\\{x = 6, y = \\\{a = 6\\\}\\\}, \\\{x = 8, y = \\\{a = 8\\\}\\\}\\\}" \
+         "print bar_vla"
+
+# Check whatis of VLA's.
+gdb_test "whatis int_vla" "type = int \\\[5\\\]" "whatis int_vla"
+gdb_test "whatis unsigned_int_vla" "type = unsigned int \\\[5\\\]" \
+         "whatis unsigned_int_vla"
+gdb_test "whatis double_vla" "type = double \\\[5\\\]" "whatis double_vla"
+gdb_test "whatis float_vla" "type = float \\\[5\\\]" "whatis float_vla"
+gdb_test "whatis long_vla" "type = long( int)? \\\[5\\\]" "whatis long_vla"
+gdb_test "whatis unsigned_long_vla" \
+         "type = (long unsigned int|unsigned long) \\\[5\\\]" \
+         "whatis unsigned_long_vla"
+gdb_test "whatis char_vla" "type = char \\\[5\\\]" "whatis char_vla"
+gdb_test "whatis short_vla" "type = short( int)? \\\[5\\\]" \
+         "whatis short_vla"
+gdb_test "whatis unsigned_short_vla" \
+         "type = (short unsigned int|unsigned short) \\\[5\\\]" \
+         "whatis unsigned_short_vla"
+gdb_test "whatis unsigned_char_vla" "type = unsigned char \\\[5\\\]" \
+         "whatis unsigned_char_vla"
+gdb_test "whatis foo_vla" "type = struct foo \\\[5\\\]" "whatis foo_vla"
+gdb_test "whatis bar_vla" "type = BAR \\\[5\\\]" "whatis bar_vla"
+
+# Check ptype of VLA's.
+gdb_test "ptype int_vla" "type = int \\\[5\\\]" "ptype int_vla"
+gdb_test "ptype unsigned_int_vla" "type = unsigned int \\\[5\\\]" \
+         "ptype unsigned_int_vla"
+gdb_test "ptype double_vla" "type = double \\\[5\\\]" "ptype double_vla"
+gdb_test "ptype float_vla" "type = float \\\[5\\\]" "ptype float_vla"
+gdb_test "ptype long_vla" "type = long( int)? \\\[5\\\]" "ptype long_vla"
+gdb_test "ptype unsigned_long_vla" "type = unsigned long \\\[5\\\]" \
+         "ptype unsigned_long_vla"
+gdb_test "ptype char_vla" "type = char \\\[5\\\]" "ptype char_vla"
+gdb_test "ptype short_vla" "type = short( int)? \\\[5\\\]" \
+         "ptype short_vla"
+gdb_test "ptype unsigned_short_vla" "type = unsigned short \\\[5\\\]" \
+         "ptype unsigned_short_vla"
+gdb_test "ptype unsigned_char_vla" "type = unsigned char \\\[5\\\]" \
+         "ptype unsigned_char_vla"
+gdb_test "ptype foo_vla" "type = struct foo {\r\n\\s+int a;\r\n} \\\[5\\\]" \
+         "ptype foo_vla"
+gdb_test "ptype bar_vla" \
+         "type = struct bar {\r\n\\s+int x;\r\n\\s+struct foo y;\r\n} \\\[5\\\]" \
+         "ptype bar_vla"
+
+# Check the size of the VLA's.
+gdb_breakpoint [gdb_get_line_number "break_end_of_vla_factory"]
+gdb_continue_to_breakpoint "break_end_of_vla_factory"
+gdb_test "print int_size == sizeof(int_vla)" "\\$\\d+ = 1" "size of int_vla"
+gdb_test "print uint_size == sizeof(unsigned_int_vla)" "\\$\\d+ = 1" \
+         "size of unsigned_int_vla"
+gdb_test "print double_size == sizeof(double_vla)" "\\$\\d+ = 1" \
+         "size of double_vla"
+gdb_test "print float_size == sizeof(float_vla)" "\\$\\d+ = 1" \
+         "size of float_vla"
+gdb_test "print long_size == sizeof(long_vla)" "\\$\\d+ = 1" \
+         "size of long_vla"
+gdb_test "print char_size == sizeof(char_vla)" "\\$\\d+ = 1" \
+         "size of char_vla"
+gdb_test "print short_size == sizeof(short_vla)" "\\$\\d+ = 1" \
+         "size of short_vla"
+gdb_test "print ushort_size == sizeof(unsigned_short_vla)" "\\$\\d+ = 1" \
+         "size of unsigned_short_vla"
+gdb_test "print uchar_size == sizeof(unsigned_char_vla)" "\\$\\d+ = 1" \
+         "size of unsigned_char_vla"
+gdb_test "print foo_size == sizeof(foo_vla)" "\\$\\d+ = 1" "size of foo_vla"
+gdb_test "print bar_size == sizeof(bar_vla)" "\\$\\d+ = 1" "size of bar_vla"
+
+# Check side effects for sizeof argument.
+set sizeof_int [get_sizeof "int" 4]
+gdb_test_no_output  "set variable int_vla\[0\] = 42" \
+                    "set variable int_vla\[0\] = 42"
+
+gdb_test "print sizeof (++int_vla\[0\])" "\\$\\d+ = ${sizeof_int}" \
+         "print sizeof (++int_vla\[0\])"
+gdb_test "print int_vla\[0\]" "\\$\\d+ = 42" \
+         "print int_vla\[0\] - sizeof no side effects"
+
+gdb_test "ptype ++int_vla\[0\]" "type = int" "ptype ++int_vla\[0\]"
+gdb_test "print int_vla\[0\]" "\\$\\d+ = 42" \
+         "print int_vla\[0\] - ptype no side effects"
+
+gdb_test "whatis ++int_vla\[0\]" "type = int" "whatis ++int_vla\[0\]"
+gdb_test "print int_vla\[0\]" "\\$\\d+ = 42" \
+         "print int_vla\[0\] - whatis no side effects"
-- 
1.8.3.1