New issue 2172: PPC test case failure: rpython/rlib/test/test_rmmap.py fails on
PPC64LE machine
https://bitbucket.org/pypy/pypy/issues/2172/ppc-test-case-failure-rpython-rlib-test
Vaibhav Sood:
Ran the test on a Ubuntu 14.10 PPC64LE machine (same test passes on a Ubuntu
14.10 x86-64 machine):
./pytest.py -rfExs rpython/rlib/test/test_rmmap.py
Get the following failure log (trace snipped to show only failure part):
```
#!python
rpython/rlib/test/test_rmmap.py:299:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _
fileno = 9, length = 6, flags = 1, prot = -3, access = 1, offset = 0
def mmap(fileno, length, flags=MAP_SHARED,
prot=PROT_WRITE | PROT_READ, access=_ACCESS_DEFAULT, offset=0):
fd = fileno
# check access is not there when flags and prot are there
if access != _ACCESS_DEFAULT and ((flags != MAP_SHARED) or
(prot != (PROT_WRITE | PROT_READ))):
raise RValueError("mmap can't specify both access and flags, prot.")
# check size boundaries
_check_map_size(length)
map_size = length
if offset < 0:
raise RValueError("negative offset")
if access == ACCESS_READ:
flags = MAP_SHARED
prot = PROT_READ
elif access == ACCESS_WRITE:
flags = MAP_SHARED
prot = PROT_READ | PROT_WRITE
elif access == ACCESS_COPY:
flags = MAP_PRIVATE
prot = PROT_READ | PROT_WRITE
elif access == _ACCESS_DEFAULT:
# map prot to access type
if prot & PROT_READ and prot & PROT_WRITE:
pass # _ACCESS_DEFAULT
elif prot & PROT_WRITE:
access = ACCESS_WRITE
else:
access = ACCESS_READ
else:
raise RValueError("mmap invalid access parameter.")
# check file size
try:
st = os.fstat(fd)
except OSError:
pass # ignore errors and trust map_size
else:
mode = st[stat.ST_MODE]
size = st[stat.ST_SIZE]
if stat.S_ISREG(mode):
if map_size == 0:
if size == 0:
raise RValueError("cannot mmap an empty file")
if offset > size:
raise RValueError(
"mmap offset is greater than file size")
map_size = int(size - offset)
if map_size != size - offset:
raise RValueError("mmap length is too large")
elif offset + map_size > size:
raise RValueError("mmap length is greater than file size")
m = MMap(access, offset)
if fd == -1:
# Assume the caller wants to map anonymous memory.
# This is the same behaviour as Windows. mmap.mmap(-1, size)
# on both Windows and Unix map anonymous memory.
m.fd = -1
flags |= MAP_ANONYMOUS
else:
m.fd = os.dup(fd)
# 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.
res = c_mmap(NonConstant(NULL), map_size, prot, flags, fd, offset)
if res == rffi.cast(PTR, -1):
errno = rposix.get_saved_errno()
> raise OSError(errno, os.strerror(errno))
E OSError: [Errno 22] Invalid argument
```
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