commit e194dd60f0d00a3537ca118cfe5372c72c33bdf3
author R. David Murray <rdmurray@bitdance.com> Mon Oct 18 01:14:06 2010 +0000
committer R. David Murray <rdmurray@bitdance.com> Mon Oct 18 01:14:06 2010 +0000
tree f94407312ce1f77f346193d060cb70290eb505c7
parent 051176fde88331b182af3706672dc90874c5347b

#678250: Make mmap flush a noop on ACCESS_READ and ACCESS_COPY.

Patch by Sébastien Sablé.  This solves a test_mmap failure on AIX.

Modules/mmapmodule.c

diff --git a/Modules/mmapmodule.c b/Modules/mmapmodule.c
index 3413f17..680f1f1 100644
--- a/Modules/mmapmodule.c
+++ b/Modules/mmapmodule.c
@@ -569,6 +569,10 @@
         PyErr_SetString(PyExc_ValueError, "flush values out of range");
         return NULL;
     }
+
+    if (self->access == ACCESS_READ || self->access == ACCESS_COPY)
+        return PyLong_FromLong(0);
+
 #ifdef MS_WINDOWS
     return PyLong_FromLong((long) FlushViewOfFile(self->data+offset, size));
 #elif defined(UNIX)