util: New BFS_FLEX_SIZEOF() macro for more precise flexible array allocations

See http://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_282.htm for all
the fun behind this.

1 files changed, 1 insertions, 1 deletions

diff --git a/bftw.c b/bftw.c
index dc04ce0..0e541c6 100644
--- a/bftw.c
+++ b/bftw.c
@@ -300,7 +300,7 @@ static size_t bftw_child_nameoff(const struct bftw_file *parent) {
 /** Create a new bftw_file. */
 static struct bftw_file *bftw_file_new(struct bftw_cache *cache, struct bftw_file *parent, const char *name) {
 	size_t namelen = strlen(name);
-	size_t size = sizeof(struct bftw_file) + namelen + 1;
+	size_t size = BFS_FLEX_SIZEOF(struct bftw_file, name, namelen + 1);
 
 	struct bftw_file *file = malloc(size);
 	if (!file) {