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fsck: do not abort upon finding an empty blob

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Asking fwrite() to write one item of size bytes results in fwrite()
reporting "I wrote zero item", when size is zero. Instead, we could
ask it to write "size" items of 1 byte and expect it to report that
"I wrote size items" when it succeeds, with any value of size,
including zero.

Noticed and reported by BJ Hargrave.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Junio C Hamano 2011-09-11 18:03:38 -07:00
parent 509d59705e
commit eb726f2d76
1 changed files with 3 additions and 6 deletions
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9
builtin/fsck.c
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@ -231,12 +231,9 @@ static void check_unreachable_object(struct object *obj)
unsigned long size;
char *buf = read_sha1_file(obj->sha1,
&type, &size);
if (buf) {
if (fwrite(buf, size, 1, f) != 1)
die_errno("Could not write '%s'",
filename);
free(buf);
}
if (buf && fwrite(buf, 1, size, f) != size)
die_errno("Could not write '%s'", filename);
free(buf);
} else
fprintf(f, "%s\n", sha1_to_hex(obj->sha1));
if (fclose(f))