[exprtk] Set maximum expression size evaluation phase (#5040)

1 files changed, 11 insertions, 6 deletions

diff --git a/projects/exprtk/exprtk_fuzzer.cpp b/projects/exprtk/exprtk_fuzzer.cpp
index 09c4fc01..3b109138 100644
--- a/projects/exprtk/exprtk_fuzzer.cpp
+++ b/projects/exprtk/exprtk_fuzzer.cpp
@@ -52,14 +52,19 @@ void run(const std::string& expression_string)
 
    if (parser.compile(expression_string, expression))
    {
-      try
+      const std::size_t max_expression_size = 64 * 1024;
+
+      if (expression_string.size() <= max_expression_size)
       {
-         expression.value();
-      }
-      catch (std::runtime_error& rte)
-      {}
+         try
+         {
+            expression.value();
+         }
+         catch (std::runtime_error& rte)
+         {}
 
-      parser.clear_loop_runtime_check();
+         parser.clear_loop_runtime_check();
+      }
    }
 }