ADDITIONAL SYSTEM INFORMATION :
# JRE version: OpenJDK Runtime Environment (8.0_392) (build 1.8.0_392-internal-fastdebug--b00)
# Java VM: OpenJDK 64-Bit Server VM (25.392-b00-fastdebug compiled mode linux-amd64 compressed oops)

A DESCRIPTION OF THE PROBLEM :
I ran a regression on JDK8u392 and found that the JVM crashed without any options.

#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/data//jdk8u/hotspot/src/share/vm/utilities/bitMap.inline.hpp:33), pid=13950, tid=0x00007feaf6a5a700
# assert(index < _size) failed: BitMap index out of bounds
#
# JRE version: OpenJDK Runtime Environment (8.0_392) (build 1.8.0_392-internal-fastdebug--b00)
# Java VM: OpenJDK 64-Bit Server VM (25.392-b00-fastdebug compiled mode linux-amd64 compressed oops)
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# If you would like to submit a bug report, please visit:
# http://bugreport.java.com/bugreport/crash.jsp
#

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
java compiler.c1.TestLinearScanHasFPURegisters

ACTUAL -
# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=/bitMap.inline.hpp:33
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/data//jdk8u/hotspot/src/share/vm/utilities/bitMap.inline.hpp:33), pid=85116, tid=0x00007fcf34232700
# assert(index < _size) failed: BitMap index out of bounds
#
# JRE version: OpenJDK Runtime Environment (8.0_392) (build 1.8.0_392-internal-fastdebug--b00)
# Java VM: OpenJDK 64-Bit Server VM (25.392-b00-fastdebug mixed mode linux-amd64 compressed oops)
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /home//repository//TestLinearScanHasFPURegisters_09_23_00_08_27/hs_err_pid85116.log
#
# Compiler replay data is saved as:
# /home//repository//TestLinearScanHasFPURegisters_09_23_00_08_27/replay_pid85116.log
#
# If you would like to submit a bug report, please visit:
# http://bugreport.java.com/bugreport/crash.jsp
#

---------- BEGIN SOURCE ----------
package compiler.c1;

public class TestLinearScanHasFPURegisters {
    void test(String[] args) {
        String[] arr = new String[4];
        float f = -1;
        try {
            arr[0] = "-1"; // exception edge 1 with value -1
            if (args.length > 1) {
                f = 42;
                arr[1] = "42"; // exception edge 2 with value 42
            }
        } catch (Exception e) {
            // exception handler block with incoming phi for "f"
            for (int i = 0; i < 1; ++i) {
                f = f; // generates bytecodes, but no JIT IR
            }
        }
    }
    public static void main(String[] args) {
        TestLinearScanHasFPURegisters t = new TestLinearScanHasFPURegisters();
        for (int i = 0; i < 1000; ++i) {
            t.test(args);
        }
    }
}
---------- END SOURCE ----------

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