From 539bc017a62f91bdf7c547b58948cb5a2f59d918 Mon Sep 17 00:00:00 2001 From: Ben Webb Date: Thu, 12 Jul 2018 10:58:10 -0700 Subject: [PATCH] Add Python 3.7 compatibility (#4862) Compilation of Python wrappers fails with Python 3.7 because the Python folks changed their C API such that PyUnicode_AsUTF8AndSize() now returns a const char* rather than a char*. Add a patch to work around. Relates #4086. --- python/google/protobuf/pyext/descriptor.cc | 2 +- python/google/protobuf/pyext/descriptor_containers.cc | 2 +- python/google/protobuf/pyext/descriptor_pool.cc | 2 +- python/google/protobuf/pyext/extension_dict.cc | 2 +- python/google/protobuf/pyext/message.cc | 4 ++-- 5 files changed, 6 insertions(+), 6 deletions(-) diff --git a/python/google/protobuf/pyext/descriptor.cc b/python/google/protobuf/pyext/descriptor.cc index 8af0cb1289..19a1c38a62 100644 --- a/python/google/protobuf/pyext/descriptor.cc +++ b/python/google/protobuf/pyext/descriptor.cc @@ -56,7 +56,7 @@ #endif #define PyString_AsStringAndSize(ob, charpp, sizep) \ (PyUnicode_Check(ob)? \ - ((*(charpp) = PyUnicode_AsUTF8AndSize(ob, (sizep))) == NULL? -1: 0): \ + ((*(charpp) = const_cast(PyUnicode_AsUTF8AndSize(ob, (sizep)))) == NULL? -1: 0): \ PyBytes_AsStringAndSize(ob, (charpp), (sizep))) #endif diff --git a/python/google/protobuf/pyext/descriptor_containers.cc b/python/google/protobuf/pyext/descriptor_containers.cc index bc007f7efa..0153664f50 100644 --- a/python/google/protobuf/pyext/descriptor_containers.cc +++ b/python/google/protobuf/pyext/descriptor_containers.cc @@ -66,7 +66,7 @@ #endif #define PyString_AsStringAndSize(ob, charpp, sizep) \ (PyUnicode_Check(ob)? \ - ((*(charpp) = PyUnicode_AsUTF8AndSize(ob, (sizep))) == NULL? -1: 0): \ + ((*(charpp) = const_cast(PyUnicode_AsUTF8AndSize(ob, (sizep)))) == NULL? -1: 0): \ PyBytes_AsStringAndSize(ob, (charpp), (sizep))) #endif diff --git a/python/google/protobuf/pyext/descriptor_pool.cc b/python/google/protobuf/pyext/descriptor_pool.cc index 95882aeb35..962accc6e9 100644 --- a/python/google/protobuf/pyext/descriptor_pool.cc +++ b/python/google/protobuf/pyext/descriptor_pool.cc @@ -48,7 +48,7 @@ #endif #define PyString_AsStringAndSize(ob, charpp, sizep) \ (PyUnicode_Check(ob)? \ - ((*(charpp) = PyUnicode_AsUTF8AndSize(ob, (sizep))) == NULL? -1: 0): \ + ((*(charpp) = const_cast(PyUnicode_AsUTF8AndSize(ob, (sizep)))) == NULL? -1: 0): \ PyBytes_AsStringAndSize(ob, (charpp), (sizep))) #endif diff --git a/python/google/protobuf/pyext/extension_dict.cc b/python/google/protobuf/pyext/extension_dict.cc index 018b5c2c49..174c5470c2 100644 --- a/python/google/protobuf/pyext/extension_dict.cc +++ b/python/google/protobuf/pyext/extension_dict.cc @@ -53,7 +53,7 @@ #endif #define PyString_AsStringAndSize(ob, charpp, sizep) \ (PyUnicode_Check(ob)? \ - ((*(charpp) = PyUnicode_AsUTF8AndSize(ob, (sizep))) == NULL? -1: 0): \ + ((*(charpp) = const_cast(PyUnicode_AsUTF8AndSize(ob, (sizep)))) == NULL? -1: 0): \ PyBytes_AsStringAndSize(ob, (charpp), (sizep))) #endif diff --git a/python/google/protobuf/pyext/message.cc b/python/google/protobuf/pyext/message.cc index 5893533adf..31094b7e10 100644 --- a/python/google/protobuf/pyext/message.cc +++ b/python/google/protobuf/pyext/message.cc @@ -79,7 +79,7 @@ (PyUnicode_Check(ob)? PyUnicode_AsUTF8(ob): PyBytes_AsString(ob)) #define PyString_AsStringAndSize(ob, charpp, sizep) \ (PyUnicode_Check(ob)? \ - ((*(charpp) = PyUnicode_AsUTF8AndSize(ob, (sizep))) == NULL? -1: 0): \ + ((*(charpp) = const_cast(PyUnicode_AsUTF8AndSize(ob, (sizep)))) == NULL? -1: 0): \ PyBytes_AsStringAndSize(ob, (charpp), (sizep))) #endif #endif @@ -1529,7 +1529,7 @@ PyObject* HasField(CMessage* self, PyObject* arg) { return NULL; } #else - field_name = PyUnicode_AsUTF8AndSize(arg, &size); + field_name = const_cast(PyUnicode_AsUTF8AndSize(arg, &size)); if (!field_name) { return NULL; }