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combine-diff: do not send NULL to printf

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When we run combined diff from working tree (diff-files --cc),
we sent NULL to printf that is returned by find_unique_abbrev().

Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano 2006-02-06 12:30:00 -08:00
parent 960c7021b3
commit 9843a1f6fd
1 changed files with 17 additions and 6 deletions
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23
combine-diff.c
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@ -623,6 +623,7 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
write_to_temp_file(ourtmp, result, size);
}
else {
/* Used by diff-tree to read from the working tree */
struct stat st;
int fd;
ourtmp = elem->path;
@ -701,6 +702,11 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
show_hunks = make_hunks(sline, cnt, num_parent, dense);
if (show_hunks) {
const char *abb;
char null_abb[DEFAULT_ABBREV + 1];
memset(null_abb, '0', DEFAULT_ABBREV);
null_abb[DEFAULT_ABBREV] = 0;
if (header) {
shown_header++;
puts(header);
@ -713,13 +719,18 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
putchar('\n');
printf("index ");
for (i = 0; i < num_parent; i++) {
printf("%s%s",
i ? "," : "",
find_unique_abbrev(elem->parent_sha1[i],
DEFAULT_ABBREV));
if (memcmp(elem->parent_sha1[i], null_sha1, 20))
abb = find_unique_abbrev(elem->parent_sha1[i],
DEFAULT_ABBREV);
else
abb = null_abb;
printf("%s%s", i ? "," : "", abb);
}
printf("..%s\n",
find_unique_abbrev(elem->sha1, DEFAULT_ABBREV));
if (memcmp(elem->sha1, null_sha1, 20))
abb = find_unique_abbrev(elem->sha1, DEFAULT_ABBREV);
else
abb = null_abb;
printf("..%s\n", abb);
dump_sline(sline, cnt, num_parent);
}
if (ourtmp == ourtmp_buf)