Add the following code to a script or add the script from the attached project to a scene and press play in the Editor. Unity crashes.

Script:
var mat = new Material (Shader.Find("Diffuse"));
mat.SetColor (1397476922, new Color(0, 0, 0, 0));

Stacktrace:

0x00000001409B814A (Unity) GetBuiltinVectorParamName
0x0000000140F4C121 (Unity) Material::SetColor
0x0000000013447C4B (Mono JIT Code) (wrapper managed-to-native) UnityEngine.Material:INTERNAL_CALL_SetColorImpl (UnityEngine.Material,int,UnityEngine.Color&)
0x0000000013447B33 (Mono JIT Code) [C:\buildslave\unity\build\artifacts\generated\common\runtime\ShaderBindings.gen.cs:196] UnityEngine.Material:SetColorImpl (int,UnityEngine.Color)
0x0000000013447A56 (Mono JIT Code) [C:\buildslave\unity\build\Runtime\Export\Graphics.cs:379] UnityEngine.Material:SetColor (int,UnityEngine.Color)
0x00000000135BB765 (Mono JIT Code) [D:\UserTestProjects\New Unity Project\Assets\NewBehaviourScript.cs:10] NewBehaviourScript:Start ()
0x0000000012A769E2 (Mono JIT Code) (wrapper runtime-invoke) object:runtime_invoke_void__this__ (object,intptr,intptr,intptr)
0x00007FFAC6CD512B (mono) [c:\buildslave\mono\build\mono\mini\mini.c:4937] mono_jit_runtime_invoke
0x00007FFAC6C283F1 (mono) [c:\buildslave\mono\build\mono\metadata\object.c:2623] mono_runtime_invoke
0x0000000140EA9C25 (Unity) scripting_method_invoke
0x0000000140EA2891 (Unity) ScriptingInvocation::Invoke
0x00000001412B34C5 (Unity) MonoBehaviour::InvokeMethodOrCoroutineChecked
0x00000001412B35FC (Unity) MonoBehaviour::InvokeMethodOrCoroutineChecked
0x00000001412B43FE (Unity) MonoBehaviour::Start
0x00000001412B4CA9 (Unity) MonoBehaviour::DelayedStartCall
0x00000001409A0CFD (Unity) DelayedCallManager::Update
0x0000000140C23B02 (Unity) PlayerLoop
0x00000001415405DE (Unity) Application::UpdateScene
0x0000000141540A97 (Unity) Application::EnterPlayMode
0x0000000141549F8F (Unity) Application::SetIsPlaying
0x000000014154AA84 (Unity) Application::TickTimer
0x00000001416172C0 (Unity) FindMonoBinaryToUse
0x00000001416188DD (Unity) WinMain
0x0000000141931150 (Unity) strnlen
0x00007FFAFE1F8364 (KERNEL32) BaseThreadInitThunk
0x00007FFB00535E91 (ntdll) RtlUserThreadStart

Seems to happen with all Unity versions