ADDITIONAL SYSTEM INFORMATION :
- Operating system: Linux
- Compiler/toolchain: GCC 9.5
- Source commit: 76b626867f7c436e493566c2cc5d6ac847420894 (tag: 1.8.0_492-internal, branch: master)
- Build type: fastdebug (also happens in release version)
- Coverage: enabled (built with --enable-coverage)
- Build environment: Linux, compiled from source with GCC 9.5
- Also happens in 1.8.0_472, released version


A DESCRIPTION OF THE PROBLEM :
A small Java program that:
- Recursively calls a method until StackOverflowError occurs.
- Catches Throwable in the recursive caller.
- Assigns a float local (initialized to Float.MIN_VALUE) to a static string via String.valueOf after the catch.

When run with -Xcomp or -Xmixed, the JVM prints NoClassDefFoundError. When run with -Xint, it prints OK as expected. This suggests a JIT compiler/runtime bug in exception/stack overflow handling and/or interaction with float locals and String.valueOf/Float.toString.


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1) Save the following source as Test.java.
2) Compile: javac Test.java
3) Run:
   - java -Xcomp -Xbatch Test
   - java -Xmixed -Xbatch Test
   - java -Xint -Xbatch Test

---------- BEGIN SOURCE ----------

public class Test {

    public static String str = "";

    public static void main(java.lang.String[] args) {
        try {
            new Test().run();
            System.out.println("OK");
        } catch (java.lang.Throwable ex) {
            System.out.println(ex.getClass().getCanonicalName());
        }
    }
    
    public void run() {
        float floatVar = Float.MIN_VALUE;
        try {
            run();
        } catch (java.lang.Throwable t) {
        }
        str = String.valueOf(floatVar);
    }

}


---------- END SOURCE ----------

FREQUENCY :
ALWAYS