File PyYAML-big-endian.patch of Package python3-PyYAML

pyyaml FTBFS on the s390x buildd.  It seems this is due to using int
where the libyaml API uses size_t.  I tested the attached patch in
zelenka.d.o's sid chroot, and at least the python2 build/test worked (it
failed with the same error as the buildd pre-patching).
Patch by Julien Cristau <jcristau@debian.org>
Add to the pyyaml package by Scott Kitterman <scott@kitterman.com>
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=676536

Index: PyYAML-3.11/ext/_yaml.pxd
===================================================================
--- PyYAML-3.11.orig/ext/_yaml.pxd
+++ PyYAML-3.11/ext/_yaml.pxd
@@ -86,15 +86,15 @@ cdef extern from "_yaml.h":
         YAML_MAPPING_END_EVENT
 
     ctypedef int yaml_read_handler_t(void *data, char *buffer,
-            int size, int *size_read) except 0
+            size_t size, size_t *size_read) except 0
 
     ctypedef int yaml_write_handler_t(void *data, char *buffer,
-            int size) except 0
+            size_t size) except 0
 
     ctypedef struct yaml_mark_t:
-        int index
-        int line
-        int column
+        size_t index
+        size_t line
+        size_t column
     ctypedef struct yaml_version_directive_t:
         int major
         int minor
@@ -113,7 +113,7 @@ cdef extern from "_yaml.h":
         char *suffix
     ctypedef struct _yaml_token_scalar_data_t:
         char *value
-        int length
+        size_t length
         yaml_scalar_style_t style
     ctypedef struct _yaml_token_version_directive_data_t:
         int major
@@ -152,7 +152,7 @@ cdef extern from "_yaml.h":
         char *anchor
         char *tag
         char *value
-        int length
+        size_t length
         int plain_implicit
         int quoted_implicit
         yaml_scalar_style_t style
Index: PyYAML-3.11/ext/_yaml.pyx
===================================================================
--- PyYAML-3.11.orig/ext/_yaml.pyx
+++ PyYAML-3.11/ext/_yaml.pyx
@@ -905,7 +905,7 @@ cdef class CParser:
                 raise error
         return 1
 
-cdef int input_handler(void *data, char *buffer, int size, int *read) except 0:
+cdef int input_handler(void *data, char *buffer, size_t size, size_t *read) except 0:
     cdef CParser parser
     parser = <CParser>data
     if parser.stream_cache is None:
@@ -1515,7 +1515,7 @@ cdef class CEmitter:
             self.ascend_resolver()
         return 1
 
-cdef int output_handler(void *data, char *buffer, int size) except 0:
+cdef int output_handler(void *data, char *buffer, size_t size) except 0:
     cdef CEmitter emitter
     emitter = <CEmitter>data
     if emitter.dump_unicode == 0:
Index: PyYAML-3.11/setup.py
===================================================================
--- PyYAML-3.11.orig/setup.py
+++ PyYAML-3.11/setup.py
@@ -75,20 +75,19 @@ if 'setuptools.extension' in sys.modules
     sys.modules['distutils.command.build_ext'].Extension = _Extension
 
 with_pyrex = None
-if sys.version_info[0] < 3:
+try:
+    from Cython.Distutils.extension import Extension as _Extension
+    from Cython.Distutils import build_ext as _build_ext
+    with_pyrex = 'cython'
+except ImportError:
     try:
-        from Cython.Distutils.extension import Extension as _Extension
-        from Cython.Distutils import build_ext as _build_ext
-        with_pyrex = 'cython'
+        # Pyrex cannot build _yaml.c at the moment,
+        # but it may get fixed eventually.
+        from Pyrex.Distutils import Extension as _Extension
+        from Pyrex.Distutils import build_ext as _build_ext
+        with_pyrex = 'pyrex'
     except ImportError:
-        try:
-            # Pyrex cannot build _yaml.c at the moment,
-            # but it may get fixed eventually.
-            from Pyrex.Distutils import Extension as _Extension
-            from Pyrex.Distutils import build_ext as _build_ext
-            with_pyrex = 'pyrex'
-        except ImportError:
-            pass
+        pass
 
 
 class Distribution(_Distribution):