Mailman 3 January 2015 - pypy-issue

Issue #1967: python property support in RPython (pypy/pypy)
by Andrey Churin 28 Jan '15

28 Jan '15

New issue 1967: python property support in RPython https://bitbucket.org/pypy/pypy/issue/1967/python-property-support-in-rpyth… Andrey Churin: Hi! I've implemented property support for rpython. Maybe you will be interested.

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Issue #1966: When run in a chroot, pypy will sometimes fail to import builtin modules (pypy/pypy)
by JakobKrainz 26 Jan '15

26 Jan '15

New issue 1966: When run in a chroot, pypy will sometimes fail to import builtin modules https://bitbucket.org/pypy/pypy/issue/1966/when-run-in-a-chroot-pypy-will-s… JakobKrainz: When running in a chroot where $HOME is not set and /etc/passwd does not contain an entry for the current UID, pypy 2.4.0 will fail to import some builtin modules. More precisely, the script ``` #!python a = raw_input() b = raw_input() n = a.count("x") for x in range(n + 4): if eval(a, dict(x=x)) != eval(b, dict(x=x)): print "NOT EQUIVALENT" exit() print "EQUIVALENT" ``` will produce the following output: ``` 'import site' failed Traceback (most recent call last): File "app_main.py", line 75, in run_toplevel File "K.py", line 9, in <module> exit() NameError: global name 'exit' is not defined ``` Adding the current user to /etc/passwd or setting $HOME fixes this.

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Issue #1965: Greenlets on OSX Yosemite segfault (pypy/pypy)
by Mike Kaplinskiy 20 Jan '15

20 Jan '15

New issue 1965: Greenlets on OSX Yosemite segfault https://bitbucket.org/pypy/pypy/issue/1965/greenlets-on-osx-yosemite-segfau… Mike Kaplinskiy: Looks like it's heap corruption. Something as simple as: ``` #!python from greenlet import greenlet, getcurrent def switch_back(): getcurrent().parent.switch() i = 0 while True: greenlet(switch_back).switch() if i % 100 == 0: print i i += 1 ``` GDB says the crash happens at malloc, which seems to be heap corruption. ``` #0 0x00007fff8526cffa in szone_malloc_should_clear () from /usr/lib/system/libsystem_malloc.dylib #1 0x00007fff8526c877 in malloc_zone_malloc () from /usr/lib/system/libsystem_malloc.dylib #2 0x00007fff8526b395 in malloc () from /usr/lib/system/libsystem_malloc.dylib #3 0x00000001010d7555 in g_save_state () from /Users/mkaplinskiy/pypy-hg/libpypy-c.dylib #4 0x00000001010d746e in slp_switch () from /Users/mkaplinskiy/pypy-hg/libpypy-c.dylib #5 0x0000000100000000 in ?? () #6 0x00000001054131c0 in ?? () #7 0x00000000ffffffff in ?? () #8 0x000000010495bd30 in ?? () #9 0x0000000103f41570 in ?? () #10 0x0000000100204970 in pypy_g_BuiltinActivation_UwS_W_Continulet__run () from /Users/mkaplinskiy/pypy-hg/libpypy-c.dylib #11 0x00000001010d7518 in stacklet_switch () from /Users/mkaplinskiy/pypy-hg/libpypy-c.dylib ... ```

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Issue #1964: pypy3: bytes() prefers __int__ over __bytes__ (pypy/pypy)
by Christoph Reiter 17 Jan '15

17 Jan '15

New issue 1964: pypy3: bytes() prefers __int__ over __bytes__ https://bitbucket.org/pypy/pypy/issue/1964/pypy3-bytes-prefers-__int__-over… Christoph Reiter: ``` #!python class Foo(object): def __int__(self): return 0 def __bytes__(self): return str(0).encode("utf-8") assert bytes(Foo()) == b"0" # returns b"" on pypy3 ```

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Issue #1963: Assertion failure in OptimizingVisitor.visit_Name (pypy/pypy)
by Dave Watola 16 Jan '15

16 Jan '15

New issue 1963: Assertion failure in OptimizingVisitor.visit_Name https://bitbucket.org/pypy/pypy/issue/1963/assertion-failure-in Dave Watola: Using version 2.4 of pypy, the very simple test case attached crashes with ``` #! RPython traceback: File "pypy_interpreter_pycompiler.c", line 1567, in PythonAstCompiler__compile_ast File "pypy_interpreter_astcompiler_ast_1.c", line 20718, in Module_mutate_over File "pypy_interpreter_astcompiler_ast_2.c", line 10177, in ASTVisitor__mutate_sequence File "pypy_interpreter_astcompiler_ast_1.c", line 45287, in Assign_mutate_over File "pypy_interpreter_astcompiler_ast_2.c", line 10177, in ASTVisitor__mutate_sequence File "pypy_interpreter_astcompiler_ast_1.c", line 53781, in List_mutate_over File "pypy_interpreter_astcompiler_ast_2.c", line 10177, in ASTVisitor__mutate_sequence File "pypy_interpreter_astcompiler_optimize.c", line 252, in OptimizingVisitor_visit_Name Fatal RPython error: AssertionError Abort (core dumped) ``` This test case uses macropy, which adjusts AST representation using an import hook. The crash occurs during compilation -- there is no runtime code in this case. Aside from this issue, macropy seems to work correctly with pypy. All seems well with the proposed fix below. It is not clear what is triggering this optimization, because the original and final ASTs involved do not use "None", I was able to eliminate the problem by editing OptimizingVisitor.visit_Name in pypy/interpreter/astcompiler/optimize.py and changing the guard condition on the "if" statement to include the assertion condition would provide a correct solution. i.e. ``` #!python if name.id=="None" and name.ctx ==ast.Load ``` (and then eliminate the assertion). This appears to be a safe and correct change, but I have no familiarity with the pypy code base and thought that someone else should evaluate the situation.

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Issue #1962: default encoding for cpython2 is ascii since 2.5, not latin1 anymore (pypy/pypy)
by Ben Longbons 16 Jan '15

16 Jan '15

New issue 1962: default encoding for cpython2 is ascii since 2.5, not latin1 anymore https://bitbucket.org/pypy/pypy/issue/1962/default-encoding-for-cpython2-is… Ben Longbons: The following code: ``` #!python print u'á' ``` Under pypy 2.4.0 produces ouput: `Ã¡` Under cpython 2.7 fails with: `SyntaxError: Non-ASCII character '\xc3' in file enc.py on line 1, but no encoding declared; see http://python.org/dev/peps/pep-0263/ for details` What the user most likely wanted was to add `# coding: utf-8` The relevant section is: ``` Phases Implementation of steps 1 and 2 above were completed in 2.3, except for changing the default encoding to "ascii". The default encoding was set to "ascii" in version 2.5. ```

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Issue #1961: Fix errno handling (pypy/pypy)
by Armin Rigo 14 Jan '15

14 Jan '15

New issue 1961: Fix errno handling https://bitbucket.org/pypy/pypy/issue/1961/fix-errno-handling Armin Rigo: The handling of errno (and GetLastError on Windows) is fragile. There are cases that can go wrong. For example, cffi's getwinerror() on Windows tends to return 0 instead of the real error when the code in question happens to be traced. The issue is that in this case, a lot more occurs, and the LastError is overwritten with the value of some unrelated function call from the tracing. But the same problem can occur anywhere: a major GC for example could trigger it. Instead, we should have a way to save the errno/LastError around a particular function call, which would work at a very low level --- in the section of code that is not protected by the GIL. It would either use some RPython global (thread-local) location, or maybe better, work with an explicitly-provided pointer to a structure containing the saved value(s). Responsible: arigo

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Issue #1960: print_function behavior different from CPython on file=None (pypy/pypy)
by Jim Witschey 10 Jan '15

10 Jan '15

New issue 1960: print_function behavior different from CPython on file=None https://bitbucket.org/pypy/pypy/issue/1960/print_function-behavior-differen… Jim Witschey: The [documentation for the `print` function](https://docs.python.org/3/library/functions.html?highlight=print#… states: > The `file` argument must be an object with a write(string) method; if it is not present or None, sys.stdout will be used. In CPython, this behavior holds: ``` bash $ python2.7 -c "from __future__ import print_function ; print('test', file=None)" test ``` but it does not in PyPy: ``` bash $ pypy -c "from __future__ import print_function ; print('test', file=None)" ``` (It's hard to show the absence of something -- note that this doesn't print anything.) This behavior is implemented correctly in pypy3: ``` bash $ pypy3 -c "print('test', file=None)" test ``` Version information: ``` bash $ pypy --version Python 2.7.8 (a980ebb26592ed26706cd33a4e05eb45b5d3ea09, Oct 21 2014, 20:15:33) [PyPy 2.4.0 with GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.54)] $ python2.7 --version Python 2.7.9 ```

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Issue #1959: Zipimport issue: unorderable types: str <= int (pypy/pypy)
by Ionel Maries Cristian 10 Jan '15

10 Jan '15

New issue 1959: Zipimport issue: unorderable types: str <= int https://bitbucket.org/pypy/pypy/issue/1959/zipimport-issue-unorderable-type… Ionel Maries Cristian: ``` Traceback (most recent call last): File "<string>", line 1, in <module> File "pip/__init__.py", line 13, in <module> from pip.utils import get_installed_distributions, get_prog File "pip/utils/__init__.py", line 14, in <module> import zipfile File "/home/ionel/pypy3-2.4.0-linux64/lib-python/3/zipfile.py", line 60, in <module> sizeEndCentDir = struct.calcsize(structEndArchive) File "/home/ionel/pypy3-2.4.0-linux64/lib_pypy/_struct.py", line 294, in calcsize num,i = getNum(fmt,i) File "/home/ionel/pypy3-2.4.0-linux64/lib_pypy/_struct.py", line 276, in getNum while ('0'<= cur ) and ( cur <= '9'): TypeError: unorderable types: str <= int ``` Could the zip be broken?! This is the zip: https://pypi.python.org/packages/py2.py3/p/pip/pip-6.0.6-py2.py3-none-any.w…

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Issue #1958: Documentation: Installing PyPy: pip instructions incorrect (pypy/pypy)
by Benjamen Keroack 08 Jan '15

08 Jan '15

New issue 1958: Documentation: Installing PyPy: pip instructions incorrect https://bitbucket.org/pypy/pypy/issue/1958/documentation-installing-pypy-pip Benjamen Keroack: The instructions on how to manually install pip here is incorrect: http://pypy.readthedocs.org/en/latest/install.html#installing-pypy http://python-distribute.org/distribute_setup.py is a dead link (python-distribute.org now is squatted and appears to host malware) It should be replaced with the following: - Download and execute: https://bootstrap.pypa.io/ez_setup.py The following link still works so it can stay: https://raw.githubusercontent.com/pypa/pip/master/contrib/get-pip.py I consider this a pretty serious documentation bug since currently the only way to get PyPy3 pip installed on Ubuntu 14.04 is to do so manually. The current docs resulted in quite a bit of frustration for me.

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