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Description
I have a c++ function like this:std::vector test();
when i use FloatBuffer to get the return of cpp function,it's get exception
here is the source code :
<NativeLibrary.h>
#include <vector>
std::vector<float> test(std::vector<short>& input){
std::vector<float> result(input.size());
for(int i = 0; i< input.size() ; ++i){
result[i] = input[i];
}
return std::move(result);
}
NativeLibraryConfig.java
package org.example;
import org.bytedeco.javacpp.annotation.Platform;
import org.bytedeco.javacpp.annotation.Properties;
import org.bytedeco.javacpp.tools.InfoMap;
import org.bytedeco.javacpp.tools.InfoMapper;
@Properties(
value = {
@Platform(include={"NativeLibrary.h"}
}
,target = "org.example.NativeLibrary"
)
public class NativeLibraryConfig implements InfoMapper{
@Override
public void map(InfoMap infoMap) {
}
}
main.java
package org.example;
import java.nio.FloatBuffer;
import java.nio.ShortBuffer;
public class Main {
public static void main(String[] args) throws InterruptedException {
FloatBuffer output= NativeLibrary.test(ShortBuffer.allocate(256));
System.out.printf("cap:%d\n", output.capacity()); // Expected capacity is 256, actual is 1024.
output.array();
System.out.println(output.getClass().getName());
}
}
STDOUT:
cap:1024
#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x0000000077940422, pid=21564, tid=0x00000000000028e4
#
# JRE version: OpenJDK Runtime Environment (8.0_432-b06) (build 1.8.0_432-b06)
# Java VM: OpenJDK 64-Bit Server VM (25.432-b06 mixed mode windows-amd64 compressed oops)
# Problematic frame:
# V [jvm.dll+0x1e0422]
#
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#
# An error report file with more information is saved as:
# E:\test\javacpp_thread\hs_err_pid21564.log
#
# If you would like to submit a bug report, please visit:
# https://github.com/adoptium/adoptium-support/issues
#