kiwamu@casper:~/src/IL2C$ cat circle.yml 
version: 2
jobs:
  build:
    working_directory: /temp
    docker:
      - image: microsoft/dotnet:sdk
    environment:
      DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
      DOTNET_CLI_TELEMETRY_OPTOUT: 1
    steps:
      - checkout
      - run: dotnet restore il2c.sln
      - run: dotnet build il2c.sln
kiwamu@casper:~/src/IL2C$ dotnet --version
2.1.3
kiwamu@casper:~/src/IL2C$ dotnet restore il2c.sln
/usr/share/dotnet/sdk/2.1.3/NuGet.targets(227,5): warning MSB3202: The project file "/home/kiwamu/src/IL2C/IL2C/IL2C.csproj" was not found. [/home/kiwamu/src/IL2C/il2c.sln]
/home/kiwamu/src/IL2C/IL2C/IL2C.csproj : warning NU1503: Skipping restore for project '/home/kiwamu/src/IL2C/IL2C/IL2C.csproj'. The project file may be invalid or missing targets required for restore. [/home/kiwamu/src/IL2C/il2c.sln]
Segmentation fault
kiwamu@casper:~/src/IL2C$   Restoring packages for /home/kiwamu/src/IL2C/IL2C.Core/IL2C.Core.csproj...
  Restoring packages for /home/kiwamu/src/IL2C/IL2C.Core.Tests/IL2C.Core.Tests.csproj...

kiwamu@casper:~/src/IL2C$ dotnet build il2c.sln
Microsoft (R) Build Engine version 15.5.179.9764 for .NET Core
Copyright (C) Microsoft Corporation. All rights reserved.

Segmentation fault
kiwamu@casper:~/src/IL2C$ /usr/share/dotnet/sdk/2.1.3/NuGet.targets(227,5): warning MSB3202: The project file "/home/kiwamu/src/IL2C/IL2C/IL2C.csproj" was not found. [/home/kiwamu/src/IL2C/il2c.sln]
/home/kiwamu/src/IL2C/IL2C/IL2C.csproj : warning NU1503: Skipping restore for project '/home/kiwamu/src/IL2C/IL2C/IL2C.csproj'. The project file may be invalid or missing targets required for restore. [/home/kiwamu/src/IL2C/il2c.sln]
  Restoring packages for /home/kiwamu/src/IL2C/IL2C.Core.Tests/IL2C.Core.Tests.csproj...
  Restoring packages for /home/kiwamu/src/IL2C/IL2C.Core/IL2C.Core.csproj...

|  // P.1
|
* <--+  // Junction point, P.2
|    |
|    |
BR --+

|      |
| P.2  | P.1
v      |
* <----+  // Junction point, P.1 and P.2.
|
| P.1
v

#include <stdio.h>
#include <setjmp.h>

jmp_buf __threadExceptionBuff;

#define TRY switch(setjmp(__threadExceptionBuff)) { case 0: while(1) {
#define CATCH(x) break; case x:
#define FINALLY break; } default: {
#define TRY_END break; } }
#define THROW(x) longjmp(__threadExceptionBuff, x)

#define EXCEPTION (1)
#define NOT_IMPLEMENTED_EXCEPTION (2)

void Foo()
{
    THROW(NOT_IMPLEMENTED_EXCEPTION);
}

void main()
{
    TRY
    {
        printf("Start\n");
        Foo();
        printf("End\n");
    }
    CATCH (NOT_IMPLEMENTED_EXCEPTION)
    {
        printf("Catch Not Implemented Exception\n");
    }
    CATCH (EXCEPTION)
    {
        printf("Catch Exception\n");
    }
    FINALLY
    {
        printf("Finally\n");
    }

struct A
{
    int x, y;
};

void Foo()
{
    // all local stack objects within this scope get pre-defined up here at the top of the block
    A a;
    A a2;
    int i;

    // Now you can use them normally and this will compile in c89....
    for (i = 0; i != 1; ++i)
    {
        // all local stack objects within this scope get pre-defined up here at the top of the block
        A b;
        float t;
        // do stuff....
    }
}