Audit malloc(3)/calloc(3)/realloc(3) usage.

* Change eight reallocs to reallocarray to be safe from overflows.
* Change one malloc to reallocarray to be safe from overflows.
* Change one calloc to reallocarray, no zeroing needed.
* Change the order of arguments of three callocs (aesthetical).

1 files changed, 4 insertions, 4 deletions

diff --git a/mandocdb.c b/mandocdb.c
index 88a2968b..e35501c4 100644
--- a/mandocdb.c
+++ b/mandocdb.c
@@ -471,8 +471,8 @@ main(int argc, char *argv[])
 		 * manpath_parse() wants to do it.
 		 */
 		if (argc > 0) {
-			dirs.paths = mandoc_calloc(argc,
-			    sizeof(char *));
+			dirs.paths = mandoc_reallocarray(NULL,
+			    argc, sizeof(char *));
 			dirs.sz = (size_t)argc;
 			for (i = 0; i < argc; i++)
 				dirs.paths[i] = mandoc_strdup(argv[i]);
@@ -1784,7 +1784,7 @@ putkeys(const struct mpage *mpage,
 		s->mask |= v;
 		return;
 	} else if (NULL == s) {
-		s = mandoc_calloc(sizeof(struct str) + sz + 1, 1);
+		s = mandoc_calloc(1, sizeof(struct str) + sz + 1);
 		memcpy(s->key, cp, sz);
 		ohash_insert(htab, slot, s);
 	}
@@ -2314,7 +2314,7 @@ static void *
 hash_halloc(size_t sz, void *arg)
 {
 
-	return(mandoc_calloc(sz, 1));
+	return(mandoc_calloc(1, sz));
 }
 
 static void *