8200282: Serializing non-zero byte as zero to ByteBuffer
Summary: arraycopy converted as a series of loads/stores uses wrong slice for loads
Reviewed-by: kvn, thartmann
/*
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/**
* @test
* @bug 8200282
* @summary arraycopy converted as a series of loads/stores uses wrong slice for loads
*
* @run main/othervm -XX:-TieredCompilation -XX:-BackgroundCompilation -XX:-UseOnStackReplacement -XX:CompileCommand=dontinline,ACasLoadsStoresBadMem::not_inlined ACasLoadsStoresBadMem
*
*/
public class ACasLoadsStoresBadMem {
public static void main(String[] args) {
int[] dst = new int[5];
for (int i = 0; i < 20_000; i++) {
test1(dst, 1);
for (int j = 1; j < 5; j++) {
if (dst[j] != j) {
throw new RuntimeException("Bad copy ");
}
}
}
}
private static void test1(int[] dst, int dstPos) {
int[] src = new int[4];
not_inlined();
src[0] = 1;
src[1] = 2;
src[2] = 3;
src[3] = 4;
System.arraycopy(src, 0, dst, dstPos, 4);
}
private static void not_inlined() {
}
}