Fixed a bug when given a filename of length 0 as argument (i.e. "").

diff --git a/dus.c b/dus.c
index e00d3df..780d360 100644 (file)
--- a/dus.c
+++ b/dus.c
@@ -85,7 +85,7 @@ int ignore_entry(const char *name) {
   return
     strcmp(name, ".") == 0 ||
     strcmp(name, "..") == 0 ||
-    (ignore_dotfiles && name[0] == '.'  && name[1] != '/');
+    (ignore_dotfiles && name[0] == '.' && name[1] != '/');
 }
 
 size_sum_t entry_size(const char *name) {
@@ -395,7 +395,7 @@ static struct option long_options[] = {
 };
 
 int main(int argc, char **argv) {
-  int c;
+  int c, l;
   struct entry_node *root;
   struct winsize win;
 
@@ -449,8 +449,9 @@ int main(int argc, char **argv) {
 
   if (optind < argc) {
     while (optind < argc) {
-      if(argv[optind][strlen(argv[optind]) - 1] == '/') {
-        argv[optind][strlen(argv[optind]) - 1] = '\0';
+      l = strlen(argv[optind]);
+      if(l > 0 && argv[optind][l - 1] == '/') {
+        argv[optind][l - 1] = '\0';
         root = push_dir_content(argv[optind++], root);
       } else {
         root = push_entry(argv[optind++], root);