New issue 2776: pip crashes if MALLOC_CHECK_ is set
https://bitbucket.org/pypy/pypy/issues/2776/pip-crashes-if-malloc_check_-is-set
Christoph Reiter:
```
MALLOC_CHECK_=3 pypy -m pip
*** Error in `python': free(): invalid pointer: 0x00f9a890 ***
Aborted (core dumped)
```
New issue 2777: re: incorrect behaviour for long patterns that are used
repeatedly (possible JIT bug?)
https://bitbucket.org/pypy/pypy/issues/2777/re-incorrect-behaviour-for-long-patterns
Andrew Stepanov:
I've observed that `re` module gives incorrect results for very long patterns
that are use