RequestContext support

[folly.git] / folly / dynamic.cpp

diff --git a/folly/dynamic.cpp b/folly/dynamic.cpp
index 26d1751658af5cb83981aab0292cc888531e7ad1..840c5f336ab7b180db51a484a738d49e466bc80a 100644 (file)
--- a/folly/dynamic.cpp
+++ b/folly/dynamic.cpp
@@ -185,7 +185,7 @@ dynamic const& dynamic::at(dynamic const& idx) const {
     if (!idx.isInt()) {
       throw TypeError("int64", idx.type());
     }
-    if (idx >= parray->size()) {
+    if (idx < 0 || idx >= parray->size()) {
       throw std::out_of_range("out of range in dynamic array");
     }
     return (*parray)[idx.asInt()];