Issue #11391: Writing to a mmap object created with
`mmap.PROT_READ|mmap.PROT_EXEC` would segfault instead of raising a
TypeError. Patch by Charles-François Natali.
diff --git a/Lib/test/test_mmap.py b/Lib/test/test_mmap.py
index d6addff..056b9ec 100644
--- a/Lib/test/test_mmap.py
+++ b/Lib/test/test_mmap.py
@@ -237,6 +237,14 @@
prot=mmap.PROT_READ, access=mmap.ACCESS_WRITE)
f.close()
+ # Try writting without PROT_WRITE
+ with open(TESTFN, "r+b") as f:
+ m = mmap.mmap(f.fileno(), mapsize, prot=~mmap.PROT_WRITE)
+ self.assertRaises(TypeError, m.write, b"abcdef")
+ self.assertRaises(TypeError, m.write_byte, 0)
+ m.close()
+
+
def test_bad_file_desc(self):
# Try opening a bad file descriptor...
self.assertRaises(mmap.error, mmap.mmap, -2, 4096)