Prevent deep nesting of plist structures in all input/output formats

Thanks to @unbengable12 for reporting. Addresses #288, #289, #290, #291, and #292.

1 files changed, 1 insertions, 0 deletions

diff --git a/include/plist/plist.h b/include/plist/plist.h
index 5ea30b8..8ed9063 100644
--- a/include/plist/plist.h
+++ b/include/plist/plist.h
@@ -145,6 +145,7 @@ extern "C"
         PLIST_ERR_NO_MEM       = -4,  /**< not enough memory to handle the operation */
         PLIST_ERR_IO           = -5,  /**< I/O error */
         PLIST_ERR_CIRCULAR_REF = -6,  /**< circular reference detected */
+        PLIST_ERR_MAX_NESTING  = -7,  /**< maximum nesting depth exceeded */
         PLIST_ERR_UNKNOWN      = -255 /**< an unspecified error occurred */
     } plist_err_t;