# Internal Compiler Error building vtk on Windows
**URL:** https://discourse.vtk.org/t/internal-compiler-error-building-vtk-on-windows/2423
**Category:** Support
**Created:** [January 14, 2020, 7:33pm UTC](https://discourse.vtk.org/t/internal-compiler-error-building-vtk-on-windows/2423 "2020-01-14T19:33:36Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@scotsman60](https://discourse.vtk.org/u/scotsman60)
#### Post date: [January 14, 2020, 7:33pm UTC](https://discourse.vtk.org/t/internal-compiler-error-building-vtk-on-windows/2423/1 "2020-01-14T19:33:36Z")
Hello,
I am building vtk from git clone on Windows using VS2017 and I’m getting a ‘C1001 - An internal compiler error has occurred in the compiler’ error in tracer.hpp while building the IOMotionFX project.
The error is in line 212 of tracer.hpp (\*\*\* below)
```
template< template< typename... > class Action, typename Iterator, typename Input, typename... States >
static auto apply( const Iterator& begin, const Input& in, States&&... st )
***-> decltype( Base< Rule >::template apply< Action >( begin, in, st... ) )***
{
std::cerr << in.position() << " apply " << internal::demangle< Rule >() << std::endl;
return Base< Rule >::template apply< Action >( begin, in, st... );
}
```
Any ideas on how to solve this problem?
Thanks in advance,
Doug
---
### Author:  [@ben.boeckel](https://discourse.vtk.org/u/ben.boeckel)
#### Post date: [January 14, 2020, 9:13pm UTC](https://discourse.vtk.org/t/internal-compiler-error-building-vtk-on-windows/2423/2 "2020-01-14T21:13:01Z")
Cc: @utkarshayachit @RobertMaynard
---
### Author:  [@RobertMaynard](https://discourse.vtk.org/u/RobertMaynard)
#### Post date: [January 14, 2020, 9:48pm UTC](https://discourse.vtk.org/t/internal-compiler-error-building-vtk-on-windows/2423/3 "2020-01-14T21:48:47Z")
Interesting. I will see if I can reproduce.
Can you provide the exact VS2017 version you are using @scotsman60
---
### Author:  [@RobertMaynard](https://discourse.vtk.org/u/RobertMaynard)
#### Post date: [January 14, 2020, 10:10pm UTC](https://discourse.vtk.org/t/internal-compiler-error-building-vtk-on-windows/2423/4 "2020-01-14T22:10:09Z")
So it looks like this was an issue in pegtl that was fixed in the 2.8.0 release. This release was brought into into VTK by MR #5627 ([https://gitlab.kitware.com/vtk/vtk/merge\_requests/5627/](https://gitlab.kitware.com/vtk/vtk/merge_requests/5627/)).
Your best bet it is to apply that set of changes to your VTK 8.2 release ( I presume ) or use VTK master
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### Author:  [@scotsman60](https://discourse.vtk.org/u/scotsman60)
#### Post date: [January 15, 2020, 8:09pm UTC](https://discourse.vtk.org/t/internal-compiler-error-building-vtk-on-windows/2423/5 "2020-01-15T20:09:19Z")
Robert - I’m using VS2017 15.5.4
---
### Author:  [@scotsman60](https://discourse.vtk.org/u/scotsman60)
#### Post date: [January 15, 2020, 8:12pm UTC](https://discourse.vtk.org/t/internal-compiler-error-building-vtk-on-windows/2423/6 "2020-01-15T20:12:32Z")
Thanks Robert.
I’m pretty sure it’s a clone of VTK master from last week that I’m working on. I’ll pull the latest and check.
Doug
---
### Author:  [@scotsman60](https://discourse.vtk.org/u/scotsman60)
#### Post date: [January 16, 2020, 9:30pm UTC](https://discourse.vtk.org/t/internal-compiler-error-building-vtk-on-windows/2423/7 "2020-01-16T21:30:31Z")
@RobertMaynard - I just rebuilt using the VTK master branch and experienced the same compiler error.
I’ll take a look at the merge you identified next - however I’m wondering if I’m the only one experiencing this problem or not…
Doug
---
### Author:  [@RobertMaynard](https://discourse.vtk.org/u/RobertMaynard)
#### Post date: [January 20, 2020, 5:04pm UTC](https://discourse.vtk.org/t/internal-compiler-error-building-vtk-on-windows/2423/8 "2020-01-20T17:04:08Z")
We have VS 2015 test machines, but I am not seeing any 2017 or 2019 testers. @Dave_DeMarle Is that correct?
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### Author:  [@Dave\_DeMarle](https://discourse.vtk.org/u/Dave_DeMarle)
#### Post date: [January 20, 2020, 7:40pm UTC](https://discourse.vtk.org/t/internal-compiler-error-building-vtk-on-windows/2423/9 "2020-01-20T19:40:19Z")
We are only testing 2015 currently on vtk via the machine named “mun”.
At the ParaView level “tylo” also tests 2015 but “nemesis” adds a 2019 builder.