[pypy-commit] pypy default: Do this whole operation without a copy

[alex_gaynor]

Author: Alex Gaynor <alex.gaynor at gmail.com>
Branch: 
Changeset: r76623:bea034347eb0
Date: 2015-03-29 11:20 -0400
http://bitbucket.org/pypy/pypy/changeset/bea034347eb0/

Log:	Do this whole operation without a copy

diff --git a/pypy/module/_hashlib/interp_hashlib.py b/pypy/module/_hashlib/interp_hashlib.py
--- a/pypy/module/_hashlib/interp_hashlib.py
+++ b/pypy/module/_hashlib/interp_hashlib.py
@@ -144,10 +144,10 @@
             with self.lock:
                 ropenssl.EVP_MD_CTX_copy(ctx, self.ctx)
             digest_size = self.digest_size
-            with lltype.scoped_alloc(rffi.CCHARP.TO, digest_size) as digest:
-                ropenssl.EVP_DigestFinal(ctx, digest, None)
+            with rffi.scoped_alloc_buffer(digest_size) as buf:
+                ropenssl.EVP_DigestFinal(ctx, buf.raw, None)
                 ropenssl.EVP_MD_CTX_cleanup(ctx)
-                return rffi.charpsize2str(digest, digest_size)
+                return buf.str(digest_size)
 
 
 W_Hash.typedef = TypeDef(