Crafted smart contract can take 8 minutes to execute due to bug in modexp precompile.

Summary: A bug in the modexp precompile can cause long stalls.

#!/bin/bash

wget -q https://download.java.net/java/GA/jdk11/9/GPL/openjdk-11.0.2_linux-x64_bin.tar.gz
tar zxf openjdk-11.0.2_linux-x64_bin.tar.gz
export JAVA_HOME=$(realpath jdk-11.0.2/)
git clone --depth 1 https://github.com/rsksmart/rskj.git
cd rskj/
./configure.sh
echo """
package co.rsk.vm; …