$ git grep -n  '<< 24' src/
src/base64.h:88:        unbase64(src[i + 0]) << 24 |
src/cares_wrap.cc:83:  return static_cast<uint32_t>(p[0] << 24U) |
src/node_sockaddr.cc:305:  uint32_t check = ptr[0] << 24 | ptr[1] << 16 | ptr[2] << 8 | ptr[3];
src/util-inl.h:51:  (((x) & 0xFF) << 24) |                                                      \
src/util-inl.h:61:  (((x) & 0x0000000000FF0000ul

We can build much smaller Mono runtime for .NET Core purposes by simply removing code we don't need in this configuration. We did a few easy initial steps but we can go much further.

This list is not comprehensive but parts like

• Culture Data
• Any PAL related code
• Unused icalls

Hello,
I run following code in ch 1.11.19(debug)，and it will crash by an assertion.

let b = [1.1, 2.2, 3.3];
b[4294967294] = 3;
Array.prototype.copyWithin.call(b, 0, 1);

Crash output:

ASSERTION 7690: (/.../ChakraCore-1.11.19/lib/Runtime/Library/JavascriptArray.cpp, line 9309) direction == -1 || (fromVal + count < MaxArrayLength && toVal + count < MaxArrayLength)
 Failure: (d

Do you think it's necessary at this stage?