delta/cpython-git.git/Python/pyhash.c, branch enum-lost-fixes github.com: python/cpython.git bpo-43475: Fix worst case collision behavior for NaN instances (GH-25493) 2021-04-22T15:34:57+00:00 Raymond Hettinger rhettinger@users.noreply.github.com 2021-04-22T15:34:57+00:00 a07da09ad5bd7d234ccd084a3a0933c290d1b592 






bpo-40943: Replace PY_FORMAT_SIZE_T with "z" (GH-20781)
2020-06-10T16:38:05+00:00

Victor Stinner
vstinner@python.org

2020-06-10T16:38:05+00:00

d36cf5f1d20ce9f111a8fc997104785086e8eee6

The PEP 353, written in 2005, introduced PY_FORMAT_SIZE_T. Python no
longer supports macOS 10.4 and Visual Studio 2010, but requires more
recent macOS and Visual Studio versions. In 2020 with Python 3.10, it
is now safe to use directly "%zu" to format size_t and "%zi" to
format Py_ssize_t.




The PEP 353, written in 2005, introduced PY_FORMAT_SIZE_T. Python no
longer supports macOS 10.4 and Visual Studio 2010, but requires more
recent macOS and Visual Studio versions. In 2020 with Python 3.10, it
is now safe to use directly "%zu" to format size_t and "%zi" to
format Py_ssize_t.






bpo-40602: Add _Py_HashPointerRaw() function (GH-20056)
2020-05-12T16:46:20+00:00

Victor Stinner
vstinner@python.org

2020-05-12T16:46:20+00:00

f453221c8b80e0570066a9375337f208d50e6406

Add a new _Py_HashPointerRaw() function which avoids replacing -1
with -2 to micro-optimize hash table using pointer keys: using
_Py_hashtable_hash_ptr() hash function.




Add a new _Py_HashPointerRaw() function which avoids replacing -1
with -2 to micro-optimize hash table using pointer keys: using
_Py_hashtable_hash_ptr() hash function.






closes bpo-40184: Only define pysiphash if the hash algorithm is SIPHASH24. (GH-19369)
2020-04-04T21:25:12+00:00

Batuhan Taşkaya
batuhanosmantaskaya@gmail.com

2020-04-04T21:25:12+00:00

1b21573a89632356737a24302dd64c9eb1457a7b












closes bpo-39605: Fix some casts to not cast away const. (GH-18453)
2020-02-12T02:28:35+00:00

Andy Lester
andy@petdance.com

2020-02-12T02:28:35+00:00

e6be9b59a911626d6597fe148c32f0342bd2bd24

gcc -Wcast-qual turns up a number of instances of casting away constness of pointers. Some of these can be safely modified, by either:

Adding the const to the type cast, as in:

-    return _PyUnicode_FromUCS1((unsigned char*)s, size);
+    return _PyUnicode_FromUCS1((const unsigned char*)s, size);

or, Removing the cast entirely, because it's not necessary (but probably was at one time), as in:

-    PyDTrace_FUNCTION_ENTRY((char *)filename, (char *)funcname, lineno);
+    PyDTrace_FUNCTION_ENTRY(filename, funcname, lineno);

These changes will not change code, but they will make it much easier to check for errors in consts




gcc -Wcast-qual turns up a number of instances of casting away constness of pointers. Some of these can be safely modified, by either:

Adding the const to the type cast, as in:

-    return _PyUnicode_FromUCS1((unsigned char*)s, size);
+    return _PyUnicode_FromUCS1((const unsigned char*)s, size);

or, Removing the cast entirely, because it's not necessary (but probably was at one time), as in:

-    PyDTrace_FUNCTION_ENTRY((char *)filename, (char *)funcname, lineno);
+    PyDTrace_FUNCTION_ENTRY(filename, funcname, lineno);

These changes will not change code, but they will make it much easier to check for errors in consts






bpo-39127: Make _Py_HashPointer's argument be const (GH-17690)
2020-02-05T21:09:57+00:00

Andy Lester
andy@petdance.com

2020-02-05T21:09:57+00:00

3d06953c34fd6421dd1dfdb615578cde676ee0eb












bpo-31849: Fix warning in pyhash.c (GH-6799)
2018-06-04T10:57:08+00:00

A. Jesse Jiryu Davis
jesse@emptysquare.net

2018-06-04T10:57:08+00:00

a8eb58546b37a7cd5f332f019bb07388f5212c2d












bpo-28055: Fix unaligned accesses in siphash24(). (GH-6123)
2018-05-13T10:57:31+00:00

Rolf Eike Beer
eike@sf-mail.de

2018-05-13T10:57:31+00:00

1e2ec8a996daec65d8d5a3d43b66a9909c6d0653

The hash implementation casts the input pointer to uint64_t* and directly reads
from this, which may cause unaligned accesses. Use memcpy() instead so this code
will not crash with SIGBUS on sparc.

https://bugs.gentoo.org/show_bug.cgi?id=636400




The hash implementation casts the input pointer to uint64_t* and directly reads
from this, which may cause unaligned accesses. Use memcpy() instead so this code
will not crash with SIGBUS on sparc.

https://bugs.gentoo.org/show_bug.cgi?id=636400






Fix some warnings produced by different compilers. (#5593)
2018-02-09T15:31:26+00:00

Serhiy Storchaka
storchaka@gmail.com

2018-02-09T15:31:26+00:00

bfe4fd5f2e96e72eecb5b8a0c7df0ac1689f3b7e












closes bpo-32460: ensure all non-static globals have initializers (#5061)
2017-12-31T18:04:13+00:00

Benjamin Peterson
benjamin@python.org

2017-12-31T18:04:13+00:00

0a37a30037073a4a9ba45e560c8445048e5f2ba2