setup_revisions(): take pathspec from command line and --stdin correctly
When the command line has "--" disambiguator, we take the remainder of
argv[] as "prune_data", but when --stdin is given at the same time,
we need to append to the existing prune_data and end up attempting to
realloc(3) it. That would not work.
Fix it by consistently using append_prune_data() throughout the input
processing. Also avoid counting the number of existing paths in the
function over and over again.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/revision.c b/revision.c
index a8a3c3a..047e017 100644
--- a/revision.c
+++ b/revision.c
@@ -953,35 +953,34 @@
return 0;
}
-static void read_pathspec_from_stdin(struct rev_info *revs, struct strbuf *sb, const char ***prune_data)
+struct cmdline_pathspec {
+ int alloc;
+ int nr;
+ const char **path;
+};
+
+static void append_prune_data(struct cmdline_pathspec *prune, const char **av)
{
- const char **prune = *prune_data;
- int prune_nr;
- int prune_alloc;
+ while (*av) {
+ ALLOC_GROW(prune->path, prune->nr+1, prune->alloc);
+ prune->path[prune->nr++] = *(av++);
+ }
+}
- /* count existing ones */
- if (!prune)
- prune_nr = 0;
- else
- for (prune_nr = 0; prune[prune_nr]; prune_nr++)
- ;
- prune_alloc = prune_nr; /* not really, but we do not know */
-
+static void read_pathspec_from_stdin(struct rev_info *revs, struct strbuf *sb,
+ struct cmdline_pathspec *prune)
+{
while (strbuf_getwholeline(sb, stdin, '\n') != EOF) {
int len = sb->len;
if (len && sb->buf[len - 1] == '\n')
sb->buf[--len] = '\0';
- ALLOC_GROW(prune, prune_nr+1, prune_alloc);
- prune[prune_nr++] = xstrdup(sb->buf);
+ ALLOC_GROW(prune->path, prune->nr+1, prune->alloc);
+ prune->path[prune->nr++] = xstrdup(sb->buf);
}
- if (prune) {
- ALLOC_GROW(prune, prune_nr+1, prune_alloc);
- prune[prune_nr] = NULL;
- }
- *prune_data = prune;
}
-static void read_revisions_from_stdin(struct rev_info *revs, const char ***prune)
+static void read_revisions_from_stdin(struct rev_info *revs,
+ struct cmdline_pathspec *prune)
{
struct strbuf sb;
int seen_dashdash = 0;
@@ -1267,34 +1266,6 @@
return for_each_ref_in("refs/bisect/good", fn, cb_data);
}
-static void append_prune_data(const char ***prune_data, const char **av)
-{
- const char **prune = *prune_data;
- int prune_nr;
- int prune_alloc;
-
- if (!prune) {
- *prune_data = av;
- return;
- }
-
- /* count existing ones */
- for (prune_nr = 0; prune[prune_nr]; prune_nr++)
- ;
- prune_alloc = prune_nr; /* not really, but we do not know */
-
- while (*av) {
- ALLOC_GROW(prune, prune_nr+1, prune_alloc);
- prune[prune_nr++] = *av;
- av++;
- }
- if (prune) {
- ALLOC_GROW(prune, prune_nr+1, prune_alloc);
- prune[prune_nr] = NULL;
- }
- *prune_data = prune;
-}
-
/*
* Parse revision information, filling in the "rev_info" structure,
* and removing the used arguments from the argument list.
@@ -1305,7 +1276,9 @@
int setup_revisions(int argc, const char **argv, struct rev_info *revs, const char *def)
{
int i, flags, left, seen_dashdash, read_from_stdin;
- const char **prune_data = NULL;
+ struct cmdline_pathspec prune_data;
+
+ memset(&prune_data, 0, sizeof(prune_data));
/* First, search for "--" */
seen_dashdash = 0;
@@ -1316,7 +1289,7 @@
argv[i] = NULL;
argc = i;
if (argv[i + 1])
- prune_data = argv + i + 1;
+ append_prune_data(&prune_data, argv + i + 1);
seen_dashdash = 1;
break;
}
@@ -1408,8 +1381,11 @@
}
}
- if (prune_data)
- revs->prune_data = get_pathspec(revs->prefix, prune_data);
+ if (prune_data.nr) {
+ ALLOC_GROW(prune_data.path, prune_data.nr+1, prune_data.alloc);
+ prune_data.path[prune_data.nr++] = NULL;
+ revs->prune_data = get_pathspec(revs->prefix, prune_data.path);
+ }
if (revs->def == NULL)
revs->def = def;
