added simple checker for array sizes, uses clang to parse C/C++,

Warns if an array is passed to a function where the array is declared larger, eg float[2] argument is passed function defined as float[3], (or a greater size).

Existing free static checkers dont do this from what I can tell.

build_files/cmake/cmake_static_check_clang_array.py

@@ -0,0 +1,76 @@
+#!/usr/bin/env python3.2
+
+# ***** BEGIN GPL LICENSE BLOCK *****
+#
+# 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 2
+# 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, write to the Free Software Foundation,
+# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#
+# Contributor(s): Campbell Barton
+#
+# ***** END GPL LICENSE BLOCK *****
+
+# <pep8 compliant>
+
+import project_source_info
+import subprocess
+import sys
+import os
+
+CHECKER_IGNORE_PREFIX = [
+    "extern",
+    "intern/moto",
+    ]
+
+CHECKER_BIN = "python2"
+
+CHECKER_ARGS = [
+    os.path.join(os.path.dirname(__file__), "clang_array_check.py"),
+    # not sure why this is needed, but it is.
+    "-I" + os.path.join(project_source_info.SOURCE_DIR, "extern", "glew", "include"),
+    ]
+
+
+def main():
+    source_info = project_source_info.build_info(ignore_prefix_list=CHECKER_IGNORE_PREFIX)
+
+    check_commands = []
+    for c, inc_dirs, defs in source_info:
+        cmd = ([CHECKER_BIN] +
+                CHECKER_ARGS +
+               [c] +
+               [("-I%s" % i) for i in inc_dirs] +
+               [("-D%s" % d) for d in defs]
+              )
+
+        check_commands.append((c, cmd))
+
+    process_functions = []
+
+    def my_process(i, c, cmd):
+        percent = 100.0 * (i / (len(check_commands) - 1))
+        percent_str = "[" + ("%.2f]" % percent).rjust(7) + " %:"
+
+        sys.stdout.flush()
+        sys.stdout.write("%s " % percent_str)
+
+        return subprocess.Popen(cmd)
+
+    for i, (c, cmd) in enumerate(check_commands):
+        process_functions.append((my_process, (i, c, cmd)))
+
+    project_source_info.queue_processes(process_functions)
+
+
+if __name__ == "__main__":
+    main()