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| author | Georg Brandl <georg@python.org> | 2012-02-20 23:50:13 (GMT) |
|---|---|---|
| committer | Georg Brandl <georg@python.org> | 2012-02-20 23:50:13 (GMT) |
| commit | 16fa2a10970a92cba1ee1249ed7bcf7d2c131051 (patch) | |
| tree | c0d1d0ae9fe7c301883f69b22a889935021b5070 /Objects | |
| parent | 802505d05e7346df9d0a8feea61f22deaf48d268 (diff) | |
| download | cpython-16fa2a10970a92cba1ee1249ed7bcf7d2c131051.zip cpython-16fa2a10970a92cba1ee1249ed7bcf7d2c131051.tar.gz cpython-16fa2a10970a92cba1ee1249ed7bcf7d2c131051.tar.bz2 | |
Forgot the "empty string -> hash == 0" special case for strings.
Diffstat (limited to 'Objects')
| -rw-r--r-- | Objects/unicodeobject.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c index 716ca3f..75e9923 100644 --- a/Objects/unicodeobject.c +++ b/Objects/unicodeobject.c @@ -11219,6 +11219,14 @@ unicode_hash(PyObject *self) if (PyUnicode_READY(self) == -1) return -1; len = PyUnicode_GET_LENGTH(self); + /* + We make the hash of the empty string be 0, rather than using + (prefix ^ suffix), since this slightly obfuscates the hash secret + */ + if (len == 0) { + _PyUnicode_HASH(self) = 0; + return 0; + } /* The hash function as a macro, gets expanded three times below. */ #define HASH(P) \ |