use xstrfmt to replace xmalloc + strcpy/strcat
It's easy to get manual allocation calculations wrong, and
the use of strcpy/strcat raise red flags for people looking
for buffer overflows (though in this case each site was
fine).
It's also shorter to use xstrfmt, and the printf-format
tends to be easier for a reader to see what the final string
will look like.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin/fetch.c b/builtin/fetch.c
index 55f457c..40d989f 100644
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -1053,16 +1053,11 @@
refs = xcalloc(argc + 1, sizeof(const char *));
for (i = 0; i < argc; i++) {
if (!strcmp(argv[i], "tag")) {
- char *ref;
i++;
if (i >= argc)
die(_("You need to specify a tag name."));
- ref = xmalloc(strlen(argv[i]) * 2 + 22);
- strcpy(ref, "refs/tags/");
- strcat(ref, argv[i]);
- strcat(ref, ":refs/tags/");
- strcat(ref, argv[i]);
- refs[j++] = ref;
+ refs[j++] = xstrfmt("refs/tags/%s:refs/tags/%s",
+ argv[i], argv[i]);
} else
refs[j++] = argv[i];
}
