geoffsmith82/delphijniwrapper

Allows Delphi and Java to call each other

delphijniwrapper's Issues

jtest2 crashes

Stack trace shown below

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x0000000067cf1a67, pid=6936, tid=26196
#
# JRE version: Java(TM) SE Runtime Environment (8.0_60-b27) (build 1.8.0_60-b27)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.60-b23 mixed mode windows-amd64 compressed oops)
# Problematic frame:
# V  [jvm.dll+0x211a67]
#
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.java.com/bugreport/crash.jsp
#

---------------  T H R E A D  ---------------

Current thread (0x00000168bcb2d800):  JavaThread "main" [_thread_in_Java, id=26196, stack(0x0000004034220000,0x0000004034320000)]

siginfo: ExceptionCode=0xc0000005, reading address 0xffffffffffffffff

Registers:
RAX=0xbcfc209800000168, RBX=0x00000168df1b05d0, RCX=0x000000403431f730, RDX=0x0000000000000003
RSP=0x000000403431f478, RBP=0x000000403431f580, RSI=0x00000168bcb2d800, RDI=0x00000000ffffffff
R8 =0x0000000000000003, R9 =0x000000403431f738, R10=0x00000168bd0c0837, R11=0x0000000000000005
R12=0x00000168bcb27d90, R13=0x00000168bcb2d800, R14=0x000000403431f580, R15=0x00000168df1b05d0
RIP=0x0000000067cf1a67, EFLAGS=0x0000000000010282

Top of Stack: (sp=0x000000403431f478)
0x000000403431f478:   0000000067cf2955 00000168df1b05d0
0x000000403431f488:   000000403431f580 0000000000000000
0x000000403431f498:   00000168bcb2d800 00000168bcb2d800
0x000000403431f4a8:   0000000067d1464a 000000403431f620
0x000000403431f4b8:   0000000000000060 00000168df1b05d0
0x000000403431f4c8:   00000168bcb2d800 00000168bd0d1ca0
0x000000403431f4d8:   0000000067d14227 0000000000000006
0x000000403431f4e8:   00007ffa197db3c7 00002ab594b0a610
0x000000403431f4f8:   0000016800000000 0000000000000000
0x000000403431f508:   00000168df1b05d0 00000168bcb2d800
0x000000403431f518:   0000000000000030 00000168df1b05d0
0x000000403431f528:   00000168bcb2d800 000000403431f848
0x000000403431f538:   000000403431f5f9 00000168bcb2d800
0x000000403431f548:   00000168bcfc2090 00000168df1b05d0
0x000000403431f558:   0000000000000000 0000000000000000
0x000000403431f568:   0000000000000000 0000000000000000 

Instructions: (pc=0x0000000067cf1a67)
0x0000000067cf1a47:   68 7e 30 66 0f 1f 44 00 00 48 8b 41 60 80 3c 02
0x0000000067cf1a57:   00 74 14 4c 8b 49 58 49 8b 04 d1 48 85 c0 74 03
0x0000000067cf1a67:   48 8b 00 49 89 04 d1 41 ff c0 48 ff c2 44 3b 41
0x0000000067cf1a77:   68 7c d6 48 8b 41 58 c3 cc 40 53 48 83 ec 20 80 


Register to memory mapping:

RAX=0xbcfc209800000168 is an unknown value
RBX={method} {0x00000168df1b05d8} 'test' '(IJLjava/lang/String;[J)I' in 'HelloWorld'
RCX=0x000000403431f730 is pointing into the stack for thread: 0x00000168bcb2d800
RDX=0x0000000000000003 is an unknown value
RSP=0x000000403431f478 is pointing into the stack for thread: 0x00000168bcb2d800
RBP=0x000000403431f580 is pointing into the stack for thread: 0x00000168bcb2d800
RSI=0x00000168bcb2d800 is a thread
RDI=0x00000000ffffffff is an unknown value
R8 =0x0000000000000003 is an unknown value
R9 =0x000000403431f738 is pointing into the stack for thread: 0x00000168bcb2d800
R10=0x00000168bd0c0837 is at begin+0 in a stub
StubRoutines::call_stub [0x00000168bd0c0837, 0x00000168bd0c09a1[ (362 bytes)
R11=0x0000000000000005 is an unknown value
R12=0x00000168bcb27d90 is an unknown value
R13=0x00000168bcb2d800 is a thread
R14=0x000000403431f580 is pointing into the stack for thread: 0x00000168bcb2d800
R15={method} {0x00000168df1b05d8} 'test' '(IJLjava/lang/String;[J)I' in 'HelloWorld'


Stack: [0x0000004034220000,0x0000004034320000],  sp=0x000000403431f478,  free space=1021k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V  [jvm.dll+0x211a67]

Add support for Microsoft Build of OpenJDK

It would be good to add support for Microsoft's build of the OpenJDK as found at https://www.microsoft.com/openjdk

64-Bit Version of Oracle JDK doesn't work

I tried calling a simple void method returning noting (testVoid() in the example below).

Calling main works and calling testVoid() also when I compile the program as a 32-Bit executable and using JDK 8 as a 32-Bit version.

public class Test {
	public static void main(String[] args) {
		System.out.println("Test");
	}
	
	public static void testStaticVoid() {
		System.out.println("static void");
	}

	public void testVoid() {
		System.out.println("void");
	}

	public String testString() {
		return "testString";
	}
	
	public String testParam(String arg1) {
		return "testParam(" + arg1 + ")";
	}
}

However when I switch to the 64-Bit version of the JDK 8 (and also compile the Delphi program as a 64-Bit executable as it won't be possible to load the DLL otherwise) I'm getting access violations.