summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorJeff King <peff@peff.net>2014-06-18 20:02:13 (GMT)
committerJunio C Hamano <gitster@pobox.com>2014-06-19 19:25:17 (GMT)
commitfa3f60b783b42e0d07c667a8f582c3df12791cec (patch)
treefab9253df02e858467cf98ede8c1bebfe75be11e
parent30a0ddb705678d512185e359831479a6b3567147 (diff)
downloadgit-fa3f60b783b42e0d07c667a8f582c3df12791cec.zip
git-fa3f60b783b42e0d07c667a8f582c3df12791cec.tar.gz
git-fa3f60b783b42e0d07c667a8f582c3df12791cec.tar.bz2
use xstrfmt in favor of manual size calculations
In many parts of the code, we do an ugly and error-prone malloc like: const char *fmt = "something %s"; buf = xmalloc(strlen(foo) + 10 + 1); sprintf(buf, fmt, foo); This makes the code brittle, and if we ever get the allocation wrong, is a potential heap overflow. Let's instead favor xstrfmt, which handles the allocation automatically, and makes the code shorter and more readable. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r--remote.c6
-rw-r--r--unpack-trees.c17
2 files changed, 7 insertions, 16 deletions
diff --git a/remote.c b/remote.c
index 0e9459c..bf27e44 100644
--- a/remote.c
+++ b/remote.c
@@ -170,7 +170,6 @@ static struct branch *make_branch(const char *name, int len)
{
struct branch *ret;
int i;
- char *refname;
for (i = 0; i < branches_nr; i++) {
if (len ? (!strncmp(name, branches[i]->name, len) &&
@@ -186,10 +185,7 @@ static struct branch *make_branch(const char *name, int len)
ret->name = xstrndup(name, len);
else
ret->name = xstrdup(name);
- refname = xmalloc(strlen(name) + strlen("refs/heads/") + 1);
- strcpy(refname, "refs/heads/");
- strcpy(refname + strlen("refs/heads/"), ret->name);
- ret->refname = refname;
+ ret->refname = xstrfmt("refs/heads/%s", ret->name);
return ret;
}
diff --git a/unpack-trees.c b/unpack-trees.c
index 97fc995..c237370 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -56,17 +56,15 @@ void setup_unpack_trees_porcelain(struct unpack_trees_options *opts,
int i;
const char **msgs = opts->msgs;
const char *msg;
- char *tmp;
const char *cmd2 = strcmp(cmd, "checkout") ? cmd : "switch branches";
+
if (advice_commit_before_merge)
msg = "Your local changes to the following files would be overwritten by %s:\n%%s"
"Please, commit your changes or stash them before you can %s.";
else
msg = "Your local changes to the following files would be overwritten by %s:\n%%s";
- tmp = xmalloc(strlen(msg) + strlen(cmd) + strlen(cmd2) - 2);
- sprintf(tmp, msg, cmd, cmd2);
- msgs[ERROR_WOULD_OVERWRITE] = tmp;
- msgs[ERROR_NOT_UPTODATE_FILE] = tmp;
+ msgs[ERROR_WOULD_OVERWRITE] = msgs[ERROR_NOT_UPTODATE_FILE] =
+ xstrfmt(msg, cmd, cmd2);
msgs[ERROR_NOT_UPTODATE_DIR] =
"Updating the following directories would lose untracked files in it:\n%s";
@@ -76,12 +74,9 @@ void setup_unpack_trees_porcelain(struct unpack_trees_options *opts,
"Please move or remove them before you can %s.";
else
msg = "The following untracked working tree files would be %s by %s:\n%%s";
- tmp = xmalloc(strlen(msg) + strlen(cmd) + strlen("removed") + strlen(cmd2) - 4);
- sprintf(tmp, msg, "removed", cmd, cmd2);
- msgs[ERROR_WOULD_LOSE_UNTRACKED_REMOVED] = tmp;
- tmp = xmalloc(strlen(msg) + strlen(cmd) + strlen("overwritten") + strlen(cmd2) - 4);
- sprintf(tmp, msg, "overwritten", cmd, cmd2);
- msgs[ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN] = tmp;
+
+ msgs[ERROR_WOULD_LOSE_UNTRACKED_REMOVED] = xstrfmt(msg, "removed", cmd, cmd2);
+ msgs[ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN] = xstrfmt(msg, "overwritten", cmd, cmd2);
/*
* Special case: ERROR_BIND_OVERLAP refers to a pair of paths, we