[core] don't crash when the version number is not a number

1 files changed, 2 insertions, 1 deletions

diff --git a/src/mbgl/style/parser.cpp b/src/mbgl/style/parser.cpp
index 56e6f8ad01..2746b8af92 100644
--- a/src/mbgl/style/parser.cpp
+++ b/src/mbgl/style/parser.cpp
@@ -35,7 +35,8 @@ void Parser::parse(const std::string& json) {
     }
 
     if (document.HasMember("version")) {
-        int version = document["version"].GetInt();
+        const JSValue& versionValue = document["version"];
+        const int version = versionValue.IsNumber() ? versionValue.GetInt() : 0;
         if (version != 8) {
             Log::Warning(Event::ParseStyle, "current renderer implementation only supports style spec version 8; using an outdated style will cause rendering errors");
         }