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authorJonathan Nieder <jrnieder@gmail.com>2011-02-07 02:17:27 -0600
committerJunio C Hamano <gitster@pobox.com>2011-02-14 10:48:06 -0800
commitdab0d4108d7b45905a12ec6cea2cfc20ea8eabef (patch)
treecbb40a68ba305bc554aba9a8349fa2749727f4dc
parent9971d6d52c5afeb8ba60ae6ddcffb34af23eeadd (diff)
downloadgit-dab0d4108d7b45905a12ec6cea2cfc20ea8eabef.tar.gz
correct type of EMPTY_TREE_SHA1_BIN
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>
-rw-r--r--builtin/checkout.c2
-rw-r--r--cache.h4
-rw-r--r--notes-merge.c2
-rw-r--r--sha1_file.c2
4 files changed, 6 insertions, 4 deletions
diff --git a/builtin/checkout.c b/builtin/checkout.c
index 757f9a08dd..cd7f56e6c4 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -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);
diff --git a/cache.h b/cache.h
index d83d68c859..3abf8950bd 100644
--- a/cache.h
+++ b/cache.h
@@ -676,9 +676,11 @@ static inline void hashclr(unsigned char *hash)
#define EMPTY_TREE_SHA1_HEX \
"4b825dc642cb6eb9a060e54bf8d69288fbee4904"
-#define EMPTY_TREE_SHA1_BIN \
+#define EMPTY_TREE_SHA1_BIN_LITERAL \
"\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \
"\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04"
+#define EMPTY_TREE_SHA1_BIN \
+ ((const unsigned char *) EMPTY_TREE_SHA1_BIN_LITERAL)
int git_mkstemp(char *path, size_t n, const char *template);
diff --git a/notes-merge.c b/notes-merge.c
index 71c4d45fcd..1467ad3179 100644
--- a/notes-merge.c
+++ b/notes-merge.c
@@ -615,7 +615,7 @@ int notes_merge(struct notes_merge_options *o,
bases = get_merge_bases(local, remote, 1);
if (!bases) {
base_sha1 = null_sha1;
- base_tree_sha1 = (unsigned char *)EMPTY_TREE_SHA1_BIN;
+ base_tree_sha1 = EMPTY_TREE_SHA1_BIN;
OUTPUT(o, 4, "No merge base found; doing history-less merge");
} else if (!bases->next) {
base_sha1 = bases->item->object.sha1;
diff --git a/sha1_file.c b/sha1_file.c
index 0b830c8642..27730c334c 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -52,7 +52,7 @@ static struct cached_object {
static int cached_object_nr, cached_object_alloc;
static struct cached_object empty_tree = {
- EMPTY_TREE_SHA1_BIN,
+ EMPTY_TREE_SHA1_BIN_LITERAL,
OBJ_TREE,
"",
0