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correct type of EMPTY_TREE_SHA1_BIN

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Functions such as hashcmp that expect a binary SHA-1 value take
parameters of type "unsigned char *" to avoid accepting a textual
SHA-1 passed by mistake.  Unfortunately, this means passing the string
literal EMPTY_TREE_SHA1_BIN requires an ugly cast.  Tweak the
definition of EMPTY_TREE_SHA1_BIN to produce a value of more
convenient type.

In the future the definition might change to

	extern const unsigned char empty_tree_sha1_bin[20];
	#define EMPTY_TREE_SHA1_BIN empty_tree_sha1_bin

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jonathan Nieder
2011-02-07 02:17:27 -06:00
committed by Junio C Hamano
parent 9971d6d52c
commit dab0d4108d
4 changed files with 6 additions and 4 deletions
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2
builtin/checkout.c
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@ -404,7 +404,7 @@ static int merge_working_tree(struct checkout_opts *opts,
topts.dir->exclude_per_dir = ".gitignore";
tree = parse_tree_indirect(old->commit ?
old->commit->object.sha1 :
(unsigned char *)EMPTY_TREE_SHA1_BIN);
EMPTY_TREE_SHA1_BIN);
init_tree_desc(&trees[0], tree->buffer, tree->size);
tree = parse_tree_indirect(new->commit->object.sha1);
init_tree_desc(&trees[1], tree->buffer, tree->size);