Paul King created GROOVY-12139:
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Summary: Primitive array Varargs Java incompatibility (fix needed
also for classic bytecode)
Key: GROOVY-12139
URL: https://issues.apache.org/jira/browse/GROOVY-12139
Project: Groovy
Issue Type: Bug
Affects Versions: 4.0.15
Reporter: Steve Eady
Assignee: Eric Milles
Fix For: 5.0.0-beta-1
Groovy is not parsing primitive arrays sent into a varargs parameter the same
way it is being parsed in Java 17.0.7
If the input value is a byte array of the string "test"...
Groovy is slicing it up into a 2d array of dimensions [4][1]
an array of size 4 each containing an array of size 1
In java, the value is being slide up into a 2d array of dimensions [1][4]
an array of size 1 containing an array of size 4.
This was detected when trying to pass in a byte[] value into a varargs of
(byte[]... args)
in a Spring library.
Here are the test cases for Groovy vs Java
{code:groovy}
class VarArgsTestGroovy {
static void main(String[] args) {
byte[] bytes = "test".bytes
test(bytes)
}
static test(byte[]... byteArrays) {
assert byteArrays.length == 4
(0..3).each {
assert byteArrays[it].length == 1
}
}
{code}
{code:java}
public class VarArgsTestJava {
public static void main(String[] args) {
byte[] bytes = "test".getBytes();
test(bytes);
}
static void test(byte[]... byteArrays) {
assert byteArrays.length == 1;
assert byteArrays[0].length == 4;
}
}
{code}
My current workaround is to pre-create a 2 dimensional array of size[1][value]
and pass that into the varargs method instead of the original byte array
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