Imported Upstream version 3.9.92upstream/3.9.92upstream

Change-Id: I568bb088bda84501eabdd8ad9d0224c88b73695e
Signed-off-by: DongHun Kwak <dh0128.kwak@samsung.com>

12 files changed, 463 insertions, 379 deletions

diff --git a/ChangeLog b/ChangeLog
index bd51bef..106435e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,66 @@
+commit 506f1e35a9375be80a6a79421bf8272165fdd90a
+Author: Simon Feltman <sfeltman@src.gnome.org>
+Date:   Mon Sep 16 01:23:49 2013 -0700
+
+    Update current maintainers list in README
+
+ README | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+commit ef120498e060e88a1efcb82de385a23c1fa9c7da
+Author: Simon Feltman <sfeltman@src.gnome.org>
+Date:   Tue Sep 10 17:11:21 2013 -0700
+
+    Fix union argument regression when marshaling from python
+
+    Check for union members when marshaling boxed types from Python.
+    This is a regression caused by stricter type checking added when
+    merging code from pygi-argument.c.
+    Re-add pyg_boxed_check to the same bit of code in addition to
+    __gtype__ checking to avoid a double regression.
+
+    https://bugzilla.gnome.org/show_bug.cgi?id=703873
+
+ gi/pygi-marshal-from-py.c | 53
+ ++++++++++++++++++++++++++---------------------
+ 1 file changed, 29 insertions(+), 24 deletions(-)
+
+commit 59a2964141e963d2961e55d4b84a777927b4f21b
+Author: Simon Feltman <sfeltman@src.gnome.org>
+Date:   Wed Sep 11 05:05:33 2013 -0700
+
+    Fix GLib.Source sub-classing with initializer args
+
+    Add variable args and keyword args to the GLib.Source.__new__
+    method to support sub-classes which want to implement __init__.
+
+    https://bugzilla.gnome.org/show_bug.cgi?id=707904
+
+ gi/overrides/GLib.py |  2 +-
+ tests/test_source.py | 11 +++++++++++
+ 2 files changed, 12 insertions(+), 1 deletion(-)
+
+commit afa42ab95327da1de0cf86005974cd8ab0d46872
+Author: Vratislav Podzimek <vpodzime@redhat.com>
+Date:   Wed Sep 4 14:17:31 2013 +0200
+
+    Copy __doc__ when wrapping function
+
+    Signed-off-by: Vratislav Podzimek <vpodzime@redhat.com>
+    Signed-off-by: Martin Pitt <martinpitt@gnome.org>
+
+ gi/overrides/__init__.py | 1 +
+ 1 file changed, 1 insertion(+)
+
+commit 7914a6828a533d8c579a5b422351e18b9f9afc8c
+Author: Martin Pitt <martinpitt@gnome.org>
+Date:   Mon Sep 2 14:56:24 2013 +0200
+
+    configure.ac: post-release bump to 3.9.92
+
+ configure.ac | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
 commit ad8b7d1a89eb2d030a504d521f7589a4c1d835fb
 Author: Martin Pitt <martinpitt@gnome.org>
 Date:   Mon Sep 2 14:38:41 2013 +0200
diff --git a/Makefile.in b/Makefile.in
index 5dc4686..7ee9ff7 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -85,8 +85,8 @@ DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
 	$(srcdir)/config.h.in $(srcdir)/pygobject-3.0.pc.in \
 	$(srcdir)/pygobject-3.0-uninstalled.pc.in \
 	$(srcdir)/PKG-INFO.in AUTHORS COPYING ChangeLog INSTALL NEWS \
-	README compile config.guess config.sub install-sh missing \
-	ltmain.sh
+	README compile config.guess config.sub depcomp install-sh \
+	missing py-compile ltmain.sh
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/as-ac-expand.m4 \
 	$(top_srcdir)/m4/jhflags.m4 $(top_srcdir)/m4/libtool.m4 \
diff --git a/NEWS b/NEWS
index 43966b5..c445bf2 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,10 @@
+3.9.92  16-Sep-2013
+        - Fix union argument regression when marshaling from python
+	  (Simon Feltman) (#703873)
+	- Fix GLib.Source sub-classing with initializer args (Simon Feltman)
+	  (#707904)
+	- Copy __doc__ when wrapping function (Vratislav Podzimek)
+
 3.9.91  02-Sep-2013
 	- Fix GObject signal methods to work with new annotations
 	  (Simon Feltman) (#707280)
diff --git a/PKG-INFO b/PKG-INFO
index 3246cfe..726498b 100644
--- a/PKG-INFO
+++ b/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 1.0
 Name: PyGObject
-Version: 3.9.91
+Version: 3.9.92
 Summary: Python bindings for GObject
 Home-page: http://www.pygtk.org/
 Author: James Henstridge
@@ -8,7 +8,7 @@ Author-email: james@daa.com.au
 Maintainer: Johan Dahlin
 Maintainer-email: johan@gnome.org
 License: GNU LGPL
-Download-url: ftp://ftp.gnome.org/pub/GNOME/sources/pygobject/3.9/pygobject-3.9.91.tar.gz
+Download-url: ftp://ftp.gnome.org/pub/GNOME/sources/pygobject/3.9/pygobject-3.9.92.tar.gz
 Description: Python bindings for GLib and GObject
 Platform: POSIX, Windows
 Classifier: Development Status :: 5 - Production/Stable
diff --git a/README b/README
index 47a4c9d..7530c61 100644
--- a/README
+++ b/README
@@ -8,7 +8,8 @@ Current maintainers:  Tomeu Vizoso <tomeu.vizoso@collabora.co.uk>
                       Paolo Borelli <pborelli@gnome.org>
                       Ignacio Casal Quinteiro <icq@gnome.org>
                       Sebastian Pölsterl <sebp@k-d-w.org>
-		      
+		      Simon Feltman <sfeltman@gnome.org>
+
 
 This archive contains bindings for the GLib, and GObject,
 to be used in Python. It is a fairly complete set of bindings,
diff --git a/aclocal.m4 b/aclocal.m4
index bdea7ef..2ef1960 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1321,6 +1321,335 @@ AC_SUBST([am__tar])
 AC_SUBST([am__untar])
 ]) # _AM_PROG_TAR
 
+dnl GNOME_CODE_COVERAGE
+dnl
+dnl Defines CODE_COVERAGE_CFLAGS and CODE_COVERAGE_LDFLAGS which should be
+dnl included in the CFLAGS and LIBS/LDFLAGS variables of every build target
+dnl (program or library) which should be built with code coverage support.
+dnl Also defines GNOME_CODE_COVERAGE_RULES which should be substituted in your
+dnl Makefile; and $enable_code_coverage which can be used in subsequent
+dnl configure output.
+dnl
+dnl Note that all optimisation flags in CFLAGS must be disabled when code
+dnl coverage is enabled.
+dnl
+dnl Derived from Makefile.decl in GLib, originally licenced under LGPLv2.1+.
+dnl This file is licenced under LGPLv2.1+.
+dnl
+dnl Usage example:
+dnl configure.ac:
+dnl    GNOME_CODE_COVERAGE
+dnl
+dnl Makefile.am:
+dnl    @GNOME_CODE_COVERAGE_RULES@
+dnl    my_program_LIBS = … $(CODE_COVERAGE_LDFLAGS) …
+dnl    my_program_CFLAGS = … $(CODE_COVERAGE_CFLAGS) …
+dnl
+dnl This results in a “check-code-coverage” rule being added to any Makefile.am
+dnl which includes “@GNOME_CODE_COVERAGE_RULES@” (assuming the module has been
+dnl configured with --enable-code-coverage). Running `make check-code-coverage`
+dnl in that directory will run the module’s test suite (`make check`) and build
+dnl a code coverage report detailing the code which was touched, then print the
+dnl URI for the report.
+
+AC_DEFUN([GNOME_CODE_COVERAGE],[
+	dnl Check for --enable-code-coverage
+	AC_MSG_CHECKING([whether to build with code coverage support])
+	AC_ARG_ENABLE([code-coverage], AS_HELP_STRING([--enable-code-coverage], [Whether to enable code coverage support]),, enable_code_coverage=no)
+	AM_CONDITIONAL([CODE_COVERAGE_ENABLED], [test x$enable_code_coverage = xyes])
+	AC_SUBST([CODE_COVERAGE_ENABLED], [$enable_code_coverage])
+	AC_MSG_RESULT($enable_code_coverage)
+
+	AS_IF([ test "$enable_code_coverage" = "yes" ], [
+		dnl Check if gcc is being used
+		AS_IF([ test "$GCC" = "no" ], [
+			AC_MSG_ERROR([not compiling with gcc, which is required for gcov code coverage])
+		])
+
+		# List of supported lcov versions.
+		lcov_version_list="1.6 1.7 1.8 1.9"
+
+		AC_CHECK_PROG([LCOV], [lcov], [lcov])
+		AC_CHECK_PROG([GENHTML], [genhtml], [genhtml])
+
+		AS_IF([ test "$LCOV" ], [
+			AC_CACHE_CHECK([for lcov version], gnome_cv_lcov_version, [
+				gnome_cv_lcov_version=invalid
+				lcov_version=`$LCOV -v 2>/dev/null | $SED -e 's/^.* //'`
+				for lcov_check_version in $lcov_version_list; do
+					if test "$lcov_version" = "$lcov_check_version"; then
+						gnome_cv_lcov_version="$lcov_check_version (ok)"
+					fi
+				done
+			])
+		], [
+			lcov_msg="To enable code coverage reporting you must have one of the following lcov versions installed: $lcov_version_list"
+			AC_MSG_ERROR([$lcov_msg])
+		])
+
+		case $gnome_cv_lcov_version in
+			""|invalid[)]
+				lcov_msg="You must have one of the following versions of lcov: $lcov_version_list (found: $lcov_version)."
+				AC_MSG_ERROR([$lcov_msg])
+				LCOV="exit 0;"
+			;;
+		esac
+
+		AS_IF([ test -z "$GENHTML" ], [
+			AC_MSG_ERROR([Could not find genhtml from the lcov package])
+		])
+
+		dnl Build the code coverage flags
+		CODE_COVERAGE_CFLAGS="-O0 -g -fprofile-arcs -ftest-coverage"
+		CODE_COVERAGE_LDFLAGS="-lgcov"
+
+		AC_SUBST([CODE_COVERAGE_CFLAGS])
+		AC_SUBST([CODE_COVERAGE_LDFLAGS])
+	])
+
+GNOME_CODE_COVERAGE_RULES='
+# Code coverage
+#
+# Optional:
+#  - CODE_COVERAGE_DIRECTORY: Top-level directory for code coverage reporting.
+#    (Default: $(top_builddir))
+#  - CODE_COVERAGE_OUTPUT_FILE: Filename and path for the .info file generated
+#    by lcov for code coverage. (Default:
+#    $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage.info)
+#  - CODE_COVERAGE_OUTPUT_DIRECTORY: Directory for generated code coverage
+#    reports to be created. (Default:
+#    $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage)
+#  - CODE_COVERAGE_LCOV_OPTIONS: Extra options to pass to the lcov instance.
+#    (Default: empty)
+#  - CODE_COVERAGE_GENHTML_OPTIONS: Extra options to pass to the genhtml
+#    instance. (Default: empty)
+#  - CODE_COVERAGE_IGNORE_PATTERN: Extra glob pattern of files to ignore
+#
+# The generated report will be titled using the $(PACKAGE_NAME) and
+# $(PACKAGE_VERSION). In order to add the current git hash to the title,
+# use the git-version-gen script, available online.
+
+# Optional variables
+CODE_COVERAGE_DIRECTORY ?= $(top_builddir)
+CODE_COVERAGE_OUTPUT_FILE ?= $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage.info
+CODE_COVERAGE_OUTPUT_DIRECTORY ?= $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage
+CODE_COVERAGE_LCOV_OPTIONS ?=
+CODE_COVERAGE_GENHTML_OPTIONS ?=
+CODE_COVERAGE_IGNORE_PATTERN ?=
+
+code_coverage_quiet = $(code_coverage_quiet_$(V))
+code_coverage_quiet_ = $(code_coverage_quiet_$(AM_DEFAULT_VERBOSITY))
+code_coverage_quiet_0 = --quiet
+
+# Use recursive makes in order to ignore errors during check
+check-code-coverage:
+ifdef CODE_COVERAGE_ENABLED
+	-$(MAKE) $(AM_MAKEFLAGS) -k check
+	$(MAKE) $(AM_MAKEFLAGS) code-coverage-capture
+else
+	@echo "Need to reconfigure with --enable-code-coverage"
+endif
+
+# Capture code coverage data
+code-coverage-capture: code-coverage-capture-hook
+ifdef CODE_COVERAGE_ENABLED
+	$(LCOV) $(code_coverage_quiet) --directory $(CODE_COVERAGE_DIRECTORY) --capture --output-file "$(CODE_COVERAGE_OUTPUT_FILE).tmp" --test-name "$(PACKAGE_NAME)-$(PACKAGE_VERSION)" --no-checksum --compat-libtool $(CODE_COVERAGE_LCOV_OPTIONS)
+	$(LCOV) $(code_coverage_quiet) --directory $(CODE_COVERAGE_DIRECTORY) --remove "$(CODE_COVERAGE_OUTPUT_FILE).tmp" "/tmp/*" $(CODE_COVERAGE_IGNORE_PATTERN) --output-file "$(CODE_COVERAGE_OUTPUT_FILE)"
+	-@rm -f $(CODE_COVERAGE_OUTPUT_FILE).tmp
+	LANG=C $(GENHTML) $(code_coverage_quiet) --prefix $(CODE_COVERAGE_DIRECTORY) --output-directory "$(CODE_COVERAGE_OUTPUT_DIRECTORY)" --title "$(PACKAGE_NAME)-$(PACKAGE_VERSION) Code Coverage" --legend --show-details "$(CODE_COVERAGE_OUTPUT_FILE)" $(CODE_COVERAGE_GENHTML_OPTIONS)
+	@echo "file://$(abs_builddir)/$(CODE_COVERAGE_OUTPUT_DIRECTORY)/index.html"
+else
+	@echo "Need to reconfigure with --enable-code-coverage"
+endif
+
+# Hook rule executed before code-coverage-capture, overridable by the user
+code-coverage-capture-hook:
+
+clean: code-coverage-clean
+code-coverage-clean:
+	-$(LCOV) --directory $(top_builddir) -z
+	-rm -rf $(CODE_COVERAGE_OUTPUT_FILE) $(CODE_COVERAGE_OUTPUT_FILE).tmp $(CODE_COVERAGE_OUTPUT_DIRECTORY)
+	-find . -name "*.gcda" -o -name "*.gcov" -delete
+
+GITIGNOREFILES ?=
+GITIGNOREFILES += $(CODE_COVERAGE_OUTPUT_FILE) $(CODE_COVERAGE_OUTPUT_DIRECTORY)
+
+DISTCHECK_CONFIGURE_FLAGS ?=
+DISTCHECK_CONFIGURE_FLAGS += --disable-code-coverage
+
+.PHONY: check-code-coverage code-coverage-capture code-coverage-capture-hook code-coverage-clean
+'
+
+	AC_SUBST([GNOME_CODE_COVERAGE_RULES])
+	m4_ifdef([_AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE([GNOME_CODE_COVERAGE_RULES])])
+])
+
+dnl GNOME_COMPILE_WARNINGS
+dnl Turn on many useful compiler warnings and substitute the result into
+dnl WARN_CFLAGS
+dnl For now, only works on GCC
+AC_DEFUN([GNOME_COMPILE_WARNINGS],[
+    dnl ******************************
+    dnl More compiler warnings
+    dnl ******************************
+
+    AC_ARG_ENABLE(compile-warnings, 
+                  AC_HELP_STRING([--enable-compile-warnings=@<:@no/minimum/yes/maximum/error@:>@],
+                                 [Turn on compiler warnings]),,
+                  [enable_compile_warnings="m4_default([$1],[yes])"])
+
+    if test "x$GCC" != xyes; then
+	enable_compile_warnings=no
+    fi
+
+    warning_flags=
+    realsave_CFLAGS="$CFLAGS"
+
+    dnl These are warning flags that aren't marked as fatal.  Can be
+    dnl overridden on a per-project basis with -Wno-foo.
+    base_warn_flags=" \
+        -Wall \
+        -Wstrict-prototypes \
+        -Wnested-externs \
+    "
+
+    dnl These compiler flags typically indicate very broken or suspicious
+    dnl code.  Some of them such as implicit-function-declaration are
+    dnl just not default because gcc compiles a lot of legacy code.
+    dnl We choose to make this set into explicit errors.
+    base_error_flags=" \
+        -Werror=missing-prototypes \
+        -Werror=implicit-function-declaration \
+        -Werror=pointer-arith \
+        -Werror=init-self \
+        -Werror=format-security \
+        -Werror=format=2 \
+        -Werror=missing-include-dirs \
+    "
+
+    case "$enable_compile_warnings" in
+    no)
+        warning_flags=
+        ;;
+    minimum)
+        warning_flags="-Wall"
+        ;;
+    yes)
+        warning_flags="$base_warn_flags $base_error_flags"
+        ;;
+    maximum|error)
+        warning_flags="$base_warn_flags $base_error_flags"
+        ;;
+    *)
+        AC_MSG_ERROR(Unknown argument '$enable_compile_warnings' to --enable-compile-warnings)
+        ;;
+    esac
+
+    if test "$enable_compile_warnings" = "error" ; then
+        warning_flags="$warning_flags -Werror"
+    fi
+
+    dnl Check whether GCC supports the warning options
+    for option in $warning_flags; do
+	save_CFLAGS="$CFLAGS"
+	CFLAGS="$CFLAGS $option"
+	AC_MSG_CHECKING([whether gcc understands $option])
+	AC_TRY_COMPILE([], [],
+	    has_option=yes,
+	    has_option=no,)
+	CFLAGS="$save_CFLAGS"
+	AC_MSG_RESULT([$has_option])
+	if test $has_option = yes; then
+	    tested_warning_flags="$tested_warning_flags $option"
+	fi
+	unset has_option
+	unset save_CFLAGS
+    done
+    unset option
+    CFLAGS="$realsave_CFLAGS"
+    AC_MSG_CHECKING(what warning flags to pass to the C compiler)
+    AC_MSG_RESULT($tested_warning_flags)
+
+    AC_ARG_ENABLE(iso-c,
+                  AC_HELP_STRING([--enable-iso-c],
+                                 [Try to warn if code is not ISO C ]),,
+                  [enable_iso_c=no])
+
+    AC_MSG_CHECKING(what language compliance flags to pass to the C compiler)
+    complCFLAGS=
+    if test "x$enable_iso_c" != "xno"; then
+	if test "x$GCC" = "xyes"; then
+	case " $CFLAGS " in
+	    *[\ \	]-ansi[\ \	]*) ;;
+	    *) complCFLAGS="$complCFLAGS -ansi" ;;
+	esac
+	case " $CFLAGS " in
+	    *[\ \	]-pedantic[\ \	]*) ;;
+	    *) complCFLAGS="$complCFLAGS -pedantic" ;;
+	esac
+	fi
+    fi
+    AC_MSG_RESULT($complCFLAGS)
+
+    WARN_CFLAGS="$tested_warning_flags $complCFLAGS"
+    AC_SUBST(WARN_CFLAGS)
+])
+
+dnl For C++, do basically the same thing.
+
+AC_DEFUN([GNOME_CXX_WARNINGS],[
+  AC_ARG_ENABLE(cxx-warnings,
+                AC_HELP_STRING([--enable-cxx-warnings=@<:@no/minimum/yes@:>@]
+                               [Turn on compiler warnings.]),,
+                [enable_cxx_warnings="m4_default([$1],[minimum])"])
+
+  AC_MSG_CHECKING(what warning flags to pass to the C++ compiler)
+  warnCXXFLAGS=
+  if test "x$GXX" != xyes; then
+    enable_cxx_warnings=no
+  fi
+  if test "x$enable_cxx_warnings" != "xno"; then
+    if test "x$GXX" = "xyes"; then
+      case " $CXXFLAGS " in
+      *[\ \	]-Wall[\ \	]*) ;;
+      *) warnCXXFLAGS="-Wall -Wno-unused" ;;
+      esac
+
+      ## -W is not all that useful.  And it cannot be controlled
+      ## with individual -Wno-xxx flags, unlike -Wall
+      if test "x$enable_cxx_warnings" = "xyes"; then
+	warnCXXFLAGS="$warnCXXFLAGS -Wshadow -Woverloaded-virtual"
+      fi
+    fi
+  fi
+  AC_MSG_RESULT($warnCXXFLAGS)
+
+   AC_ARG_ENABLE(iso-cxx,
+                 AC_HELP_STRING([--enable-iso-cxx],
+                                [Try to warn if code is not ISO C++ ]),,
+                 [enable_iso_cxx=no])
+
+   AC_MSG_CHECKING(what language compliance flags to pass to the C++ compiler)
+   complCXXFLAGS=
+   if test "x$enable_iso_cxx" != "xno"; then
+     if test "x$GXX" = "xyes"; then
+      case " $CXXFLAGS " in
+      *[\ \	]-ansi[\ \	]*) ;;
+      *) complCXXFLAGS="$complCXXFLAGS -ansi" ;;
+      esac
+
+      case " $CXXFLAGS " in
+      *[\ \	]-pedantic[\ \	]*) ;;
+      *) complCXXFLAGS="$complCXXFLAGS -pedantic" ;;
+      esac
+     fi
+   fi
+  AC_MSG_RESULT($complCXXFLAGS)
+
+  WARN_CXXFLAGS="$CXXFLAGS $warnCXXFLAGS $complCXXFLAGS"
+  AC_SUBST(WARN_CXXFLAGS)
+])
+
 # pkg.m4 - Macros to locate and utilise pkg-config.            -*- Autoconf -*-
 # serial 1 (pkg-config-0.24)
 # 
@@ -1696,337 +2025,6 @@ main ()
   rm -f conf.glibtest
 ])
 
-dnl GNOME_CODE_COVERAGE
-dnl
-dnl Defines CODE_COVERAGE_CFLAGS and CODE_COVERAGE_LDFLAGS which should be
-dnl included in the CFLAGS and LIBS/LDFLAGS variables of every build target
-dnl (program or library) which should be built with code coverage support.
-dnl Also defines GNOME_CODE_COVERAGE_RULES which should be substituted in your
-dnl Makefile; and $enable_code_coverage which can be used in subsequent
-dnl configure output.
-dnl
-dnl Note that all optimisation flags in CFLAGS must be disabled when code
-dnl coverage is enabled.
-dnl
-dnl Derived from Makefile.decl in GLib, originally licenced under LGPLv2.1+.
-dnl This file is licenced under LGPLv2.1+.
-dnl
-dnl Usage example:
-dnl configure.ac:
-dnl    GNOME_CODE_COVERAGE
-dnl
-dnl Makefile.am:
-dnl    @GNOME_CODE_COVERAGE_RULES@
-dnl    my_program_LIBS = … $(CODE_COVERAGE_LDFLAGS) …
-dnl    my_program_CFLAGS = … $(CODE_COVERAGE_CFLAGS) …
-dnl
-dnl This results in a “check-code-coverage” rule being added to any Makefile.am
-dnl which includes “@GNOME_CODE_COVERAGE_RULES@” (assuming the module has been
-dnl configured with --enable-code-coverage). Running `make check-code-coverage`
-dnl in that directory will run the module’s test suite (`make check`) and build
-dnl a code coverage report detailing the code which was touched, then print the
-dnl URI for the report.
-
-AC_DEFUN([GNOME_CODE_COVERAGE],[
-	dnl Check for --enable-code-coverage
-	AC_MSG_CHECKING([whether to build with code coverage support])
-	AC_ARG_ENABLE([code-coverage], AS_HELP_STRING([--enable-code-coverage], [Whether to enable code coverage support]),, enable_code_coverage=no)
-	AM_CONDITIONAL([CODE_COVERAGE_ENABLED], [test x$enable_code_coverage = xyes])
-	AC_SUBST([CODE_COVERAGE_ENABLED], [$enable_code_coverage])
-	AC_MSG_RESULT($enable_code_coverage)
-
-	AS_IF([ test "$enable_code_coverage" = "yes" ], [
-		dnl Check if gcc is being used
-		AS_IF([ test "$GCC" = "no" ], [
-			AC_MSG_ERROR([not compiling with gcc, which is required for gcov code coverage])
-		])
-
-		# List of supported lcov versions.
-		lcov_version_list="1.6 1.7 1.8 1.9 1.10"
-
-		AC_CHECK_PROG([LCOV], [lcov], [lcov])
-		AC_CHECK_PROG([GENHTML], [genhtml], [genhtml])
-
-		AS_IF([ test "$LCOV" ], [
-			AC_CACHE_CHECK([for lcov version], gnome_cv_lcov_version, [
-				gnome_cv_lcov_version=invalid
-				lcov_version=`$LCOV -v 2>/dev/null | $SED -e 's/^.* //'`
-				for lcov_check_version in $lcov_version_list; do
-					if test "$lcov_version" = "$lcov_check_version"; then
-						gnome_cv_lcov_version="$lcov_check_version (ok)"
-					fi
-				done
-			])
-		], [
-			lcov_msg="To enable code coverage reporting you must have one of the following lcov versions installed: $lcov_version_list"
-			AC_MSG_ERROR([$lcov_msg])
-		])
-
-		case $gnome_cv_lcov_version in
-			""|invalid[)]
-				lcov_msg="You must have one of the following versions of lcov: $lcov_version_list (found: $lcov_version)."
-				AC_MSG_ERROR([$lcov_msg])
-				LCOV="exit 0;"
-			;;
-		esac
-
-		AS_IF([ test -z "$GENHTML" ], [
-			AC_MSG_ERROR([Could not find genhtml from the lcov package])
-		])
-
-		dnl Build the code coverage flags
-		CODE_COVERAGE_CFLAGS="-O0 -g -fprofile-arcs -ftest-coverage"
-		CODE_COVERAGE_LDFLAGS="-lgcov"
-
-		AC_SUBST([CODE_COVERAGE_CFLAGS])
-		AC_SUBST([CODE_COVERAGE_LDFLAGS])
-	])
-
-GNOME_CODE_COVERAGE_RULES='
-# Code coverage
-#
-# Optional:
-#  - CODE_COVERAGE_DIRECTORY: Top-level directory for code coverage reporting.
-#    (Default: $(top_builddir))
-#  - CODE_COVERAGE_OUTPUT_FILE: Filename and path for the .info file generated
-#    by lcov for code coverage. (Default:
-#    $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage.info)
-#  - CODE_COVERAGE_OUTPUT_DIRECTORY: Directory for generated code coverage
-#    reports to be created. (Default:
-#    $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage)
-#  - CODE_COVERAGE_LCOV_OPTIONS: Extra options to pass to the lcov instance.
-#    (Default: empty)
-#  - CODE_COVERAGE_GENHTML_OPTIONS: Extra options to pass to the genhtml
-#    instance. (Default: empty)
-#  - CODE_COVERAGE_IGNORE_PATTERN: Extra glob pattern of files to ignore
-#
-# The generated report will be titled using the $(PACKAGE_NAME) and
-# $(PACKAGE_VERSION). In order to add the current git hash to the title,
-# use the git-version-gen script, available online.
-
-# Optional variables
-CODE_COVERAGE_DIRECTORY ?= $(top_builddir)
-CODE_COVERAGE_OUTPUT_FILE ?= $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage.info
-CODE_COVERAGE_OUTPUT_DIRECTORY ?= $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage
-CODE_COVERAGE_LCOV_OPTIONS ?=
-CODE_COVERAGE_GENHTML_OPTIONS ?=
-CODE_COVERAGE_IGNORE_PATTERN ?=
-
-code_coverage_quiet = $(code_coverage_quiet_$(V))
-code_coverage_quiet_ = $(code_coverage_quiet_$(AM_DEFAULT_VERBOSITY))
-code_coverage_quiet_0 = --quiet
-
-# Use recursive makes in order to ignore errors during check
-check-code-coverage:
-ifeq ($(CODE_COVERAGE_ENABLED),yes)
-	-$(MAKE) $(AM_MAKEFLAGS) -k check
-	$(MAKE) $(AM_MAKEFLAGS) code-coverage-capture
-else
-	@echo "Need to reconfigure with --enable-code-coverage"
-endif
-
-# Capture code coverage data
-code-coverage-capture: code-coverage-capture-hook
-ifeq ($(CODE_COVERAGE_ENABLED),yes)
-	$(LCOV) $(code_coverage_quiet) --directory $(CODE_COVERAGE_DIRECTORY) --capture --output-file "$(CODE_COVERAGE_OUTPUT_FILE).tmp" --test-name "$(PACKAGE_NAME)-$(PACKAGE_VERSION)" --no-checksum --compat-libtool $(CODE_COVERAGE_LCOV_OPTIONS)
-	$(LCOV) $(code_coverage_quiet) --directory $(CODE_COVERAGE_DIRECTORY) --remove "$(CODE_COVERAGE_OUTPUT_FILE).tmp" "/tmp/*" $(CODE_COVERAGE_IGNORE_PATTERN) --output-file "$(CODE_COVERAGE_OUTPUT_FILE)"
-	-@rm -f $(CODE_COVERAGE_OUTPUT_FILE).tmp
-	LANG=C $(GENHTML) $(code_coverage_quiet) --prefix $(CODE_COVERAGE_DIRECTORY) --output-directory "$(CODE_COVERAGE_OUTPUT_DIRECTORY)" --title "$(PACKAGE_NAME)-$(PACKAGE_VERSION) Code Coverage" --legend --show-details "$(CODE_COVERAGE_OUTPUT_FILE)" $(CODE_COVERAGE_GENHTML_OPTIONS)
-	@echo "file://$(abs_builddir)/$(CODE_COVERAGE_OUTPUT_DIRECTORY)/index.html"
-else
-	@echo "Need to reconfigure with --enable-code-coverage"
-endif
-
-# Hook rule executed before code-coverage-capture, overridable by the user
-code-coverage-capture-hook:
-
-ifeq ($(CODE_COVERAGE_ENABLED),yes)
-clean: code-coverage-clean
-code-coverage-clean:
-	-$(LCOV) --directory $(top_builddir) -z
-	-rm -rf $(CODE_COVERAGE_OUTPUT_FILE) $(CODE_COVERAGE_OUTPUT_FILE).tmp $(CODE_COVERAGE_OUTPUT_DIRECTORY)
-	-find . -name "*.gcda" -o -name "*.gcov" -delete
-endif
-
-GITIGNOREFILES ?=
-GITIGNOREFILES += $(CODE_COVERAGE_OUTPUT_FILE) $(CODE_COVERAGE_OUTPUT_DIRECTORY)
-
-DISTCHECK_CONFIGURE_FLAGS ?=
-DISTCHECK_CONFIGURE_FLAGS += --disable-code-coverage
-
-.PHONY: check-code-coverage code-coverage-capture code-coverage-capture-hook code-coverage-clean
-'
-
-	AC_SUBST([GNOME_CODE_COVERAGE_RULES])
-	m4_ifdef([_AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE([GNOME_CODE_COVERAGE_RULES])])
-])
-
-dnl GNOME_COMPILE_WARNINGS
-dnl Turn on many useful compiler warnings and substitute the result into
-dnl WARN_CFLAGS
-dnl For now, only works on GCC
-AC_DEFUN([GNOME_COMPILE_WARNINGS],[
-    dnl ******************************
-    dnl More compiler warnings
-    dnl ******************************
-
-    AC_ARG_ENABLE(compile-warnings, 
-                  AC_HELP_STRING([--enable-compile-warnings=@<:@no/minimum/yes/maximum/error@:>@],
-                                 [Turn on compiler warnings]),,
-                  [enable_compile_warnings="m4_default([$1],[yes])"])
-
-    if test "x$GCC" != xyes; then
-	enable_compile_warnings=no
-    fi
-
-    warning_flags=
-    realsave_CFLAGS="$CFLAGS"
-
-    dnl These are warning flags that aren't marked as fatal.  Can be
-    dnl overridden on a per-project basis with -Wno-foo.
-    base_warn_flags=" \
-        -Wall \
-        -Wstrict-prototypes \
-        -Wnested-externs \
-    "
-
-    dnl These compiler flags typically indicate very broken or suspicious
-    dnl code.  Some of them such as implicit-function-declaration are
-    dnl just not default because gcc compiles a lot of legacy code.
-    dnl We choose to make this set into explicit errors.
-    base_error_flags=" \
-        -Werror=missing-prototypes \
-        -Werror=implicit-function-declaration \
-        -Werror=pointer-arith \
-        -Werror=init-self \
-        -Werror=format-security \
-        -Werror=format=2 \
-        -Werror=missing-include-dirs \
-    "
-
-    case "$enable_compile_warnings" in
-    no)
-        warning_flags=
-        ;;
-    minimum)
-        warning_flags="-Wall"
-        ;;
-    yes)
-        warning_flags="$base_warn_flags $base_error_flags"
-        ;;
-    maximum|error)
-        warning_flags="$base_warn_flags $base_error_flags"
-        ;;
-    *)
-        AC_MSG_ERROR(Unknown argument '$enable_compile_warnings' to --enable-compile-warnings)
-        ;;
-    esac
-
-    if test "$enable_compile_warnings" = "error" ; then
-        warning_flags="$warning_flags -Werror"
-    fi
-
-    dnl Check whether GCC supports the warning options
-    for option in $warning_flags; do
-	save_CFLAGS="$CFLAGS"
-	CFLAGS="$CFLAGS $option"
-	AC_MSG_CHECKING([whether gcc understands $option])
-	AC_TRY_COMPILE([], [],
-	    has_option=yes,
-	    has_option=no,)
-	CFLAGS="$save_CFLAGS"
-	AC_MSG_RESULT([$has_option])
-	if test $has_option = yes; then
-	    tested_warning_flags="$tested_warning_flags $option"
-	fi
-	unset has_option
-	unset save_CFLAGS
-    done
-    unset option
-    CFLAGS="$realsave_CFLAGS"
-    AC_MSG_CHECKING(what warning flags to pass to the C compiler)
-    AC_MSG_RESULT($tested_warning_flags)
-
-    AC_ARG_ENABLE(iso-c,
-                  AC_HELP_STRING([--enable-iso-c],
-                                 [Try to warn if code is not ISO C ]),,
-                  [enable_iso_c=no])
-
-    AC_MSG_CHECKING(what language compliance flags to pass to the C compiler)
-    complCFLAGS=
-    if test "x$enable_iso_c" != "xno"; then
-	if test "x$GCC" = "xyes"; then
-	case " $CFLAGS " in
-	    *[\ \	]-ansi[\ \	]*) ;;
-	    *) complCFLAGS="$complCFLAGS -ansi" ;;
-	esac
-	case " $CFLAGS " in
-	    *[\ \	]-pedantic[\ \	]*) ;;
-	    *) complCFLAGS="$complCFLAGS -pedantic" ;;
-	esac
-	fi
-    fi
-    AC_MSG_RESULT($complCFLAGS)
-
-    WARN_CFLAGS="$tested_warning_flags $complCFLAGS"
-    AC_SUBST(WARN_CFLAGS)
-])
-
-dnl For C++, do basically the same thing.
-
-AC_DEFUN([GNOME_CXX_WARNINGS],[
-  AC_ARG_ENABLE(cxx-warnings,
-                AC_HELP_STRING([--enable-cxx-warnings=@<:@no/minimum/yes@:>@]
-                               [Turn on compiler warnings.]),,
-                [enable_cxx_warnings="m4_default([$1],[minimum])"])
-
-  AC_MSG_CHECKING(what warning flags to pass to the C++ compiler)
-  warnCXXFLAGS=
-  if test "x$GXX" != xyes; then
-    enable_cxx_warnings=no
-  fi
-  if test "x$enable_cxx_warnings" != "xno"; then
-    if test "x$GXX" = "xyes"; then
-      case " $CXXFLAGS " in
-      *[\ \	]-Wall[\ \	]*) ;;
-      *) warnCXXFLAGS="-Wall -Wno-unused" ;;
-      esac
-
-      ## -W is not all that useful.  And it cannot be controlled
-      ## with individual -Wno-xxx flags, unlike -Wall
-      if test "x$enable_cxx_warnings" = "xyes"; then
-	warnCXXFLAGS="$warnCXXFLAGS -Wshadow -Woverloaded-virtual"
-      fi
-    fi
-  fi
-  AC_MSG_RESULT($warnCXXFLAGS)
-
-   AC_ARG_ENABLE(iso-cxx,
-                 AC_HELP_STRING([--enable-iso-cxx],
-                                [Try to warn if code is not ISO C++ ]),,
-                 [enable_iso_cxx=no])
-
-   AC_MSG_CHECKING(what language compliance flags to pass to the C++ compiler)
-   complCXXFLAGS=
-   if test "x$enable_iso_cxx" != "xno"; then
-     if test "x$GXX" = "xyes"; then
-      case " $CXXFLAGS " in
-      *[\ \	]-ansi[\ \	]*) ;;
-      *) complCXXFLAGS="$complCXXFLAGS -ansi" ;;
-      esac
-
-      case " $CXXFLAGS " in
-      *[\ \	]-pedantic[\ \	]*) ;;
-      *) complCXXFLAGS="$complCXXFLAGS -pedantic" ;;
-      esac
-     fi
-   fi
-  AC_MSG_RESULT($complCXXFLAGS)
-
-  WARN_CXXFLAGS="$CXXFLAGS $warnCXXFLAGS $complCXXFLAGS"
-  AC_SUBST(WARN_CXXFLAGS)
-])
-
 m4_include([m4/as-ac-expand.m4])
 m4_include([m4/jhflags.m4])
 m4_include([m4/libtool.m4])
diff --git a/configure b/configure
index 154bac4..b98afbb 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for pygobject 3.9.91.
+# Generated by GNU Autoconf 2.69 for pygobject 3.9.92.
 #
 # Report bugs to <http://bugzilla.gnome.org/enter_bug.cgi?product=pygobject>.
 #
@@ -591,8 +591,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='pygobject'
 PACKAGE_TARNAME='pygobject'
-PACKAGE_VERSION='3.9.91'
-PACKAGE_STRING='pygobject 3.9.91'
+PACKAGE_VERSION='3.9.92'
+PACKAGE_STRING='pygobject 3.9.92'
 PACKAGE_BUGREPORT='http://bugzilla.gnome.org/enter_bug.cgi?product=pygobject'
 PACKAGE_URL='https://live.gnome.org/PyGObject/'
 
@@ -1395,7 +1395,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures pygobject 3.9.91 to adapt to many kinds of systems.
+\`configure' configures pygobject 3.9.92 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1465,7 +1465,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of pygobject 3.9.91:";;
+     short | recursive ) echo "Configuration of pygobject 3.9.92:";;
    esac
   cat <<\_ACEOF
 
@@ -1602,7 +1602,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-pygobject configure 3.9.91
+pygobject configure 3.9.92
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -1880,7 +1880,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by pygobject $as_me 3.9.91, which was
+It was created by pygobject $as_me 3.9.92, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -2244,9 +2244,9 @@ $as_echo "#define PYGOBJECT_MINOR_VERSION 9" >>confdefs.h
 PYGOBJECT_MINOR_VERSION=9
 
 
-$as_echo "#define PYGOBJECT_MICRO_VERSION 91" >>confdefs.h
+$as_echo "#define PYGOBJECT_MICRO_VERSION 92" >>confdefs.h
 
-PYGOBJECT_MICRO_VERSION=91
+PYGOBJECT_MICRO_VERSION=92
 
 
 ac_config_headers="$ac_config_headers config.h"
@@ -2766,7 +2766,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='pygobject'
- VERSION='3.9.91'
+ VERSION='3.9.92'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -14425,7 +14425,7 @@ $as_echo "$enable_code_coverage" >&6; }
 fi
 
 		# List of supported lcov versions.
-		lcov_version_list="1.6 1.7 1.8 1.9 1.10"
+		lcov_version_list="1.6 1.7 1.8 1.9"
 
 		# Extract the first word of "lcov", so it can be a program name with args.
 set dummy lcov; ac_word=$2
@@ -14587,7 +14587,7 @@ code_coverage_quiet_0 = --quiet
 
 # Use recursive makes in order to ignore errors during check
 check-code-coverage:
-ifeq ($(CODE_COVERAGE_ENABLED),yes)
+ifdef CODE_COVERAGE_ENABLED
 	-$(MAKE) $(AM_MAKEFLAGS) -k check
 	$(MAKE) $(AM_MAKEFLAGS) code-coverage-capture
 else
@@ -14596,7 +14596,7 @@ endif
 
 # Capture code coverage data
 code-coverage-capture: code-coverage-capture-hook
-ifeq ($(CODE_COVERAGE_ENABLED),yes)
+ifdef CODE_COVERAGE_ENABLED
 	$(LCOV) $(code_coverage_quiet) --directory $(CODE_COVERAGE_DIRECTORY) --capture --output-file "$(CODE_COVERAGE_OUTPUT_FILE).tmp" --test-name "$(PACKAGE_NAME)-$(PACKAGE_VERSION)" --no-checksum --compat-libtool $(CODE_COVERAGE_LCOV_OPTIONS)
 	$(LCOV) $(code_coverage_quiet) --directory $(CODE_COVERAGE_DIRECTORY) --remove "$(CODE_COVERAGE_OUTPUT_FILE).tmp" "/tmp/*" $(CODE_COVERAGE_IGNORE_PATTERN) --output-file "$(CODE_COVERAGE_OUTPUT_FILE)"
 	-@rm -f $(CODE_COVERAGE_OUTPUT_FILE).tmp
@@ -14609,13 +14609,11 @@ endif
 # Hook rule executed before code-coverage-capture, overridable by the user
 code-coverage-capture-hook:
 
-ifeq ($(CODE_COVERAGE_ENABLED),yes)
 clean: code-coverage-clean
 code-coverage-clean:
 	-$(LCOV) --directory $(top_builddir) -z
 	-rm -rf $(CODE_COVERAGE_OUTPUT_FILE) $(CODE_COVERAGE_OUTPUT_FILE).tmp $(CODE_COVERAGE_OUTPUT_DIRECTORY)
 	-find . -name "*.gcda" -o -name "*.gcov" -delete
-endif
 
 GITIGNOREFILES ?=
 GITIGNOREFILES += $(CODE_COVERAGE_OUTPUT_FILE) $(CODE_COVERAGE_OUTPUT_DIRECTORY)
@@ -15332,7 +15330,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by pygobject $as_me 3.9.91, which was
+This file was extended by pygobject $as_me 3.9.92, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -15399,7 +15397,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-pygobject config.status 3.9.91
+pygobject config.status 3.9.92
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 
diff --git a/configure.ac b/configure.ac
index f405d4b..d0a41b8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,7 +18,7 @@ m4_define(python3_min_ver, 3.1)
 dnl the pygobject version number
 m4_define(pygobject_major_version, 3)
 m4_define(pygobject_minor_version, 9)
-m4_define(pygobject_micro_version, 91)
+m4_define(pygobject_micro_version, 92)
 m4_define(pygobject_version, pygobject_major_version.pygobject_minor_version.pygobject_micro_version)
 
 dnl versions of packages we require ...
diff --git a/gi/overrides/GLib.py b/gi/overrides/GLib.py
index 0a4cdb6..f4b1ef5 100644
--- a/gi/overrides/GLib.py
+++ b/gi/overrides/GLib.py
@@ -536,7 +536,7 @@ __all__.append('MainContext')
 
 
 class Source(GLib.Source):
-    def __new__(cls):
+    def __new__(cls, *args, **kwargs):
         # use our custom pyg_source_new() here as g_source_new() is not
         # bindable
         source = source_new()
diff --git a/gi/overrides/__init__.py b/gi/overrides/__init__.py
index 943ea60..8aa9731 100644
--- a/gi/overrides/__init__.py
+++ b/gi/overrides/__init__.py
@@ -64,6 +64,7 @@ class overridefunc(object):
         def wrapper(*args, **kwargs):
             return func(*args, **kwargs)
         wrapper.__name__ = func.__name__
+        wrapper.__doc__ = func.__doc__
         setattr(self.module, func.__name__, wrapper)
         return wrapper
 
diff --git a/gi/pygi-marshal-from-py.c b/gi/pygi-marshal-from-py.c
index 82d94a0..57b4126 100644
--- a/gi/pygi-marshal-from-py.c
+++ b/gi/pygi-marshal-from-py.c
@@ -1780,6 +1780,8 @@ _pygi_marshal_from_py_interface_struct (PyObject *py_arg,
                                         gboolean copy_reference,
                                         gboolean is_foreign)
 {
+    gboolean is_union = FALSE;
+
     if (py_arg == Py_None) {
         arg->v_pointer = NULL;
         return TRUE;
@@ -1806,41 +1808,27 @@ _pygi_marshal_from_py_interface_struct (PyObject *py_arg,
         return (success == Py_None);
     } else if (!PyObject_IsInstance (py_arg, py_type)) {
         /* first check to see if this is a member of the expected union */
-        if (!_is_union_member (interface_info, py_arg)) {
-            if (!PyErr_Occurred()) {
-                gchar *type_name = _pygi_g_base_info_get_fullname (interface_info);
-                PyObject *module = PyObject_GetAttrString(py_arg, "__module__");
-
-                PyErr_Format (PyExc_TypeError, "argument %s: Expected %s, but got %s%s%s",
-                              arg_name ? arg_name : "self",
-                              type_name,
-                              module ? PYGLIB_PyUnicode_AsString(module) : "",
-                              module ? "." : "",
-                              py_arg->ob_type->tp_name);
-                if (module)
-                    Py_DECREF (module);
-                g_free (type_name);
-            }
-
-            return FALSE;
+        is_union = _is_union_member (interface_info, py_arg);
+        if (!is_union) {
+            goto type_error;
         }
     }
 
     if (g_type_is_a (g_type, G_TYPE_BOXED)) {
-        /* Use pyg_type_from_object to pull the stashed __gtype__ attribute
-         * off of the input argument instead of checking PyGBoxed.gtype
-         * with pyg_boxed_check. This is needed to work around type discrepancies
-         * in cases with aliased (typedef) types. e.g. GtkAllocation, GdkRectangle.
+        /* Additionally use pyg_type_from_object to pull the stashed __gtype__
+         * attribute off of the input argument for type checking. This is needed
+         * to work around type discrepancies in cases with aliased (typedef) types.
+         * e.g. GtkAllocation, GdkRectangle.
          * See: https://bugzilla.gnomethere are .org/show_bug.cgi?id=707140
          */
-        if (g_type_is_a (pyg_type_from_object (py_arg), g_type)) {
+        if (is_union || pyg_boxed_check (py_arg, g_type) ||
+                g_type_is_a (pyg_type_from_object (py_arg), g_type)) {
             arg->v_pointer = pyg_boxed_get (py_arg, void);
             if (transfer == GI_TRANSFER_EVERYTHING) {
                 arg->v_pointer = g_boxed_copy (g_type, arg->v_pointer);
             }
         } else {
-            PyErr_Format (PyExc_TypeError, "wrong boxed type");
-            return FALSE;
+            goto type_error;
         }
 
     } else if (g_type_is_a (g_type, G_TYPE_POINTER) ||
@@ -1862,4 +1850,21 @@ _pygi_marshal_from_py_interface_struct (PyObject *py_arg,
         return FALSE;
     }
     return TRUE;
+
+type_error:
+    {
+        gchar *type_name = _pygi_g_base_info_get_fullname (interface_info);
+        PyObject *module = PyObject_GetAttrString(py_arg, "__module__");
+
+        PyErr_Format (PyExc_TypeError, "argument %s: Expected %s, but got %s%s%s",
+                      arg_name ? arg_name : "self",
+                      type_name,
+                      module ? PYGLIB_PyUnicode_AsString(module) : "",
+                      module ? "." : "",
+                      py_arg->ob_type->tp_name);
+        if (module)
+            Py_DECREF (module);
+        g_free (type_name);
+        return FALSE;
+    }
 }
diff --git a/tests/test_source.py b/tests/test_source.py
index 5b3b51b..d0e28e4 100644
--- a/tests/test_source.py
+++ b/tests/test_source.py
@@ -214,6 +214,17 @@ class TestSource(unittest.TestCase):
         del source
         self.assertTrue(self.finalized)
 
+    def test_extra_init_args(self):
+        class SourceWithInitArgs(GLib.Source):
+            def __init__(self, arg, kwarg=None):
+                super(SourceWithInitArgs, self).__init__()
+                self.arg = arg
+                self.kwarg = kwarg
+
+        source = SourceWithInitArgs(1, kwarg=2)
+        self.assertEqual(source.arg, 1)
+        self.assertEqual(source.kwarg, 2)
+
 
 class TestUserData(unittest.TestCase):
     def test_idle_no_data(self):