Bug 19249 – Trying to build DMD for windows with LDC fails

Trying to build DMD for windows using LDC: Build 32bit: 1>..\dmd\root\longdouble.d(164): error : static assert: "usupported type" 1>..\dmd\constfold.d(1123): instantiated from here: `opCast!(__c_long)` Build 64bit: 1>..\dmd\backend\cod4.d(291): Deprecation: integral promotion not done for `~modregrm(0u, 7u, 0u)`, use '-transition=intpromote' switch or `~cast(int)(modregrm(0u, 7u, 0u))` 1>..\dmd\backend\cod4.d(48): error : Global variable type does not match previous declaration with same mangled name: `?dblreg@@3PAIB` 1>..\dmd\backend\cod4.d(48): Previous IR type: [4 x i32] 1>..\dmd\backend\cod4.d(48): New IR type: [4 x i32]

32 bit: https://github.com/dlang/dmd/pull/8719

Hmm, for 64-bit module dmd.backend.cod4; enum { BX, DX, CX } extern (C++): __gshared const uint[4] dblreg = [ BX,DX,cast(uint)-1,CX ]; void main() { } does not reproduce. Any odd flags being used?

Win32 __c_long fix: https://github.com/dlang/druntime/pull/2302 General dblreg issue: https://github.com/ldc-developers/ldc/issues/2849

Should be working with LDC v1.12-beta2 again.