Alex Gaynor avatar Alex Gaynor committed c1212ae

(alex, fijal): fix for mmap on OSX: mmap requires either MAP_SHARED or MAP_PRIVATE be massed

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rpython/rlib/rmmap.py

         else:
             m.fd = os.dup(fd)
 
+        if sys.platform == "darwin" and not flags & MAP_SHARED:
+            flags |= MAP_PRIVATE
+
         # XXX if we use hintp below in alloc, the NonConstant
         #     is necessary since we want a general version of c_mmap
         #     to be annotated with a non-constant pointer.
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