Unreachable condition in compiler

[hryx]

Here is a short program which causes the compiler to output "unreachable" and be killed with SIGABRT:

https://gist.github.com/hryx/c274aa28ed7a03e189203354b1b32fa4

The program itself is probably invalid, but I was told this may still be a compiler bug.

My setup: macOS 10.12.6, zig 0.2.0 (via Homebrew), fish 2.7.1. I ran zig build-exe main.zig.

[BraedonWooding]

Good find it is a bug :).

I get the following error message when doing on latest master;

Assertion failed: (target_value_ptr->value.type->id == TypeTableEntryIdPointer), function ir_analyze_instruction_switch_target, file /.../Zig/src/ir.cpp, line 14785.
Abort trap: 6

Assertions mean compiler bugs. I put a fix in #946 till this gets cleared up, most likely it is just a bad error message.