Global variable initializer type does not match global variable type

[MrSmith33]

Global variable initializer type does not match global variable type!
%voxelman.graphics.font.textmesher.TextMesherParams* @_D8voxelman8graphics4font10textmesher16TextMesherParams6__initZ
LLVM ERROR: Broken module found, compilation aborted!
ldc2 failed with exit code 1.

Fails on 1.2.0 and 1.3.0-beta1 on Windows
Upd: And 1.1.1

P.S. Can we have debug release?

[ennis]

The following code seems to trigger the same error:

import std.stdio;

struct Vec
{
    float v; 
}

struct Quat
{
	union
	{
		Vec v;   // replacing this line with 'float v;' makes the error disappear
		struct
		{
			float x;
		}
	}

	@nogc static Quat identity() pure nothrow @property
	{
		Quat q;
		q.x = 1;  // commenting this line makes the error disappear
		return q;
	}
}

struct S 
{
	Quat q = Quat.identity;
}

static Quat q = Quat.identity;

void main()
{
}

Compiler output:

Global variable initializer type does not match global variable type!
%app.S* @_D3app1S6__initZ
LLVM ERROR: Broken module found, compilation aborted!

Output of ldc2 -version:

LDC - the LLVM D compiler (1.3.0-beta1):
based on DMD v2.073.2 and LLVM 3.9.1
built with LDC - the LLVM D compiler (1.3.0-beta1)
Default target: x86_64-pc-windows-msvc
Host CPU: haswell

[ennis]

Reduced with dustmite:

struct Vec
{
}

struct Quat
{
	union
	{
		Vec v;
		struct
		{
			float x;
		}
	}

	static identity() 
	{
		Quat q;
		q.x = 1;
		return q;
	}
}

struct S 
{
	Quat q = Quat.identity;
}

Also fails on 1.3.0-beta2

[kinke]

Thank you very much @ennis.

[kinke]

struct Vec { float v; }

struct Quat
{
	union
	{
		Vec v;
		struct { float x; }
	}

	@nogc static Quat identity() pure nothrow @property
	{
		Quat q;
		q.x = 1; // q.v.v = 1;
		return q;
	}
}

struct S 
{
	Quat q = Quat.identity;
}

Crashes with initializer type mismatch. The commented-out code also crashes, but this time when generating the ModuleInfo... a jewel of a testcase. Almost certainly due to the union of course and the difficulty of expressing it in LLVM IR.

Edit: Sorry, the 2nd crash is due to a dirty source tree on my side, initializing the primary union member compiles fine with beta2.

[kinke]

The potentially multiple LL types for a single D union (and all aggregates containing it such as struct S), depending on which members are initialized, are also the reason for nasty issue #1829. We should probably look into how clang handles this.

[kinke]

ennis' testcase fixed by #2171.

@MrSmith33: Please check again with Windows CI build 3897 here. It should be downloadable in about half an hour.

[MrSmith33]

@kinke:
On first try I got LLVM ERROR: Could not acquire a cryptographic context: Unknown error (0x7F)
On second I and consecutive I get Error: out of memory
LDC uses only 1.8 Gigs of memory

[kinke]

Are you using the 64-bit build? And which Windows version?

[MrSmith33]

I downloaded LDC-master-3911-multilib.7z on Windows 10 64bit

[MrSmith33]

I tried splitting project into two parts. One part still fails with .dub\obj\client.obj: not enough memory

[MrSmith33]

It seems to compile now, but fails to link with some system libs, (possibly a dub bug)

I have "libs-windows": ["user32", "gdi32", "ws2_32", "winmm"], in dub.json

ws2_32.lib(WS2_32.dll) : error LNK2005: htons already defined in druntime-ldc.lib(winsock2.obj)
ws2_32.lib(WS2_32.dll) : error LNK2005: ntohs already defined in druntime-ldc.lib(winsock2.obj)
ws2_32.lib(WS2_32.dll) : error LNK2005: ntohl already defined in druntime-ldc.lib(winsock2.obj)
ws2_32.lib(WS2_32.dll) : error LNK2005: htonl already defined in druntime-ldc.lib(winsock2.obj)
   Creating library .dub\build\application-debug-windows-x86_64-ldc_2073-0BF793B79011CBF99FDC78FD7F053D86\editor.lib and object .dub\build\application-debug-windows-x86_64-ldc_2073-0BF793B79011CBF99FDC78FD7F053D86\editor.exp
cimgui.lib(imgui.obj) : error LNK2019: unresolved external symbol _vacopy referenced in function "public: void __cdecl ImGuiTextBuffer::appendv(char const *,char *)" (?appendv@ImGuiTextBuffer@@QEAAXPEBDPEAD@Z)
enet.lib(win32.o) : error LNK2019: unresolved external symbol __imp_timeBeginPeriod referenced in function enet_initialize
enet.lib(win32.o) : error LNK2019: unresolved external symbol __imp_timeEndPeriod referenced in function enet_deinitialize
enet.lib(win32.o) : error LNK2019: unresolved external symbol __imp_timeGetTime referenced in function enet_host_random_seed
.dub\build\application-debug-windows-x86_64-ldc_2073-0BF793B79011CBF99FDC78FD7F053D86\editor.exe : fatal error LNK1120: 4 unresolved externals
Error: C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\BIN\amd64\link.exe failed with status: 1120
ldc2 failed with exit code 1120.

[kinke]

Alright, the original issue seems to be fixed as expected then, thanks for confirming -> closing.