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git/contrib/coccinelle/array.cocci
René Scharfe 45ccef87b3 use COPY_ARRAY
Add a semantic patch for converting certain calls of memcpy(3) to
COPY_ARRAY() and apply that transformation to the code base.  The result
is
 shorter and safer code.  For now only consider calls where source and
destination have the same type, or in other words: easy cases.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-25 16:44:13 -07:00

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@@
type T;
T *dst;
T *src;
expression n;
@@
- memcpy(dst, src, n * sizeof(*dst));
+ COPY_ARRAY(dst, src, n);
@@
type T;
T *dst;
T *src;
expression n;
@@
- memcpy(dst, src, n * sizeof(*src));
+ COPY_ARRAY(dst, src, n);
@@
type T;
T *dst;
T *src;
expression n;
@@
- memcpy(dst, src, n * sizeof(T));
+ COPY_ARRAY(dst, src, n);