Module validation failed: inlinable function call in a function with debug info must have a !dbg location

[carsonbaker]

Example code:

lib LibFoo
  struct Bar
    str : LibC::Char*
  end
end

shmee = LibFoo::Bar.new
shmee.str = "borkborkbork"

Execution:

 ± crystal build --release eek.cr
Module validation failed: inlinable function call in a function with debug info must have a !dbg location
  %77 = call i8* @"*String#to_unsafe:Pointer(UInt8)"(%String* bitcast ({ i32, i32, i32, [13 x i8] }* @"'borkborkbork'" to %String*))

0x10f633743: *raise<String>:NoReturn at ??
0x110613a6b: *Crystal::CodeGenVisitor#finish:Nil at ??
0x11053f03e: *Crystal::Compiler#codegen<Crystal::Program, Crystal::ASTNode+, Array(Crystal::Compiler::Source), String>:(Tuple(Array(Crystal::Compiler::CompilationUnit), Array(String)) | Nil) at ??
0x110de3764: *Crystal::Compiler#compile<Array(Crystal::Compiler::Source), String>:Crystal::Compiler::Result at ??
0x10f6a0aeb: *Crystal::Command#run:(Bool | Crystal::Compiler::Result | IO::FileDescriptor | Nil) at ??
0x10f66cb9d: main at ??

Environment:

 ± crystal -v
Crystal 0.22.0 (2017-04-20) LLVM 4.0.0

[faustinoaq]

I can reproduce this.

If you use crystal build --release --no-debug eek.cr it compiles well