Fixed buffer overflow

test/opener/opener.c

@@ -54,24 +54,32 @@ int main(int argc, char *argv[]) {
     }
 
     // Construct the full path
-    char fullpath[PATH_MAX];
+    char *fullpath = NULL;
-    snprintf(fullpath, PATH_MAX, "%s/%s", path, entry->d_name);
+    if (asprintf(&fullpath, "%s/%s", path, entry->d_name) == -1 ||
+        fullpath == NULL) {
+      perror("asprintf");
+      success = 0;
+      break;
+    }
 
     // Stat the entry to check if it's a regular file
     struct stat entry_stat;
     if (lstat(fullpath, &entry_stat) == -1) {
       perror("lstat");
       success = 0;
+      free(fullpath);
       break;
     }
 
     // Only process regular files
     if (!S_ISREG(entry_stat.st_mode)) {
+      free(fullpath);
       continue;
     }
 
     // Try to open and immediately close the file
     int fd = open(fullpath, O_RDONLY);
+    free(fullpath);
     if (fd == -1) {
       perror("open");
       success = 0;