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https://github.com/mpi4py/mpi4py/pull/452
From: Paul Zander <negril.nx+gentoo@gmail.com>
From 3adbd69b7219525f32636552394935a0a770896d Mon Sep 17 00:00:00 2001
From: Lisandro Dalcin <dalcinl@gmail.com>
Date: Mon, 15 Jan 2024 10:45:38 +0300
Subject: [PATCH] fix: Fix implementation of MPI.buffer.toreadonly()
---
src/mpi4py/MPI/asbuffer.pxi | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/src/mpi4py/MPI/asbuffer.pxi b/src/mpi4py/MPI/asbuffer.pxi
index 15e06a1..6536c1f 100644
--- a/src/mpi4py/MPI/asbuffer.pxi
+++ b/src/mpi4py/MPI/asbuffer.pxi
@@ -257,14 +257,12 @@ cdef class memory:
def toreadonly(self) -> memory:
"""Return a readonly version of the memory object"""
- cdef void *buf = self.view.buf
- cdef Py_ssize_t size = self.view.len
cdef object obj = self
if self.view.obj != NULL:
obj = <object>self.view.obj
cdef memory mem = memory.__new__(memory)
- PyBuffer_FillInfo(&mem.view, obj,
- buf, size, 1, PyBUF_SIMPLE)
+ PyMPI_GetBuffer(obj, &mem.view, PyBUF_SIMPLE)
+ mem.view.readonly = 1
return mem
def release(self) -> None:
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