python: use libvirt_util to avoid raw free

This patch starts the process of elevating the python binding code
to be on the same level as the rest of libvirt when it comes to
requiring good coding styles.  Statically linking against the
libvirt_util library makes it much easier to write good code,
rather than having to open-code and reinvent things locally.

Done by global search and replace of s/free(/VIR_FREE(/, followed
by hand-inspection of remaining malloc and redundant memset.

* cfg.mk (exclude_file_name_regexp--sc_prohibit_raw_allocation):
Remove python from exemption.
* python/Makefile.am (INCLUDES): Add gnulib and src/util.  Drop
$(top_builddir)/$(subdir), as automake already guarantees that.
(mylibs, myqemulibs): Pull in libvirt_util and gnulib.
(libvirtmod_la_CFLAGS): Catch compiler warnings if configured to
use -Werror.
* python/typewrappers.c (libvirt_charPtrSizeWrap)
(libvirt_charPtrWrap): Convert free to VIR_FREE.
* python/generator.py (print_function_wrapper): Likewise.
* python/libvirt-override.c: Likewise.

1 files changed, 1 insertions, 1 deletions

diff --git a/generator.py b/generator.py
index 0728519..98072f0 100755
--- a/generator.py
+++ b/generator.py
@@ -580,7 +580,7 @@ def print_function_wrapper(module, name, output, export, include):
     if ret[0] == 'void':
         if file == "python_accessor":
             if args[1][1] == "char *":
-                c_call = "\n    free(%s->%s);\n" % (
+                c_call = "\n    VIR_FREE(%s->%s);\n" % (
                                  args[0][0], args[1][0], args[0][0], args[1][0])
                 c_call = c_call + "    %s->%s = (%s)strdup((const xmlChar *)%s);\n" % (args[0][0],
                                  args[1][0], args[1][1], args[1][0])