julia> using Gallium
WARNING: module Lexer should explicitly import √ from Base

julia> include(Pkg.dir("Gallium/examples/testprograms/misc.jl"))
inaloop (generic function with 1 method)

julia> Gallium.breakpoint(sinthesin,Tuple{Int64})
Hooking.Hook(Ptr{Void} @0x0000000319e72000,UInt8[0x55,0x48,0x89,0xe5,0x53,0x50,0x48,0xbb,0xe0,0xcb,0xe5,0x19,0x03,0x00,0x00,0x00],Gallium.breakpoint_hit)

julia> inaloop(2)
ERROR: MethodError: no method matching copy(::Void)
 in (::Gallium.##5#6)(::Array{UInt8,1}) at /Users/stefan/.julia/v0.5/Gallium/src/Gallium.jl:142
 in rec_backtrace(::Gallium.##5#6, ::Hooking.RegisterContext) at /Users/stefan/.julia/v0.5/Hooking/src/backtraces.jl:54
 in stackwalk(::Hooking.RegisterContext) at /Users/stefan/.julia/v0.5/Gallium/src/Gallium.jl:134
 in breakpoint_hit(::Hooking.Hook, ::Hooking.RegisterContext) at /Users/stefan/.julia/v0.5/Gallium/src/Gallium.jl:224
 in _callback(::Ptr{Void}) at /Users/stefan/.julia/v0.5/Hooking/src/Hooking.jl:129
 in callback(::Ptr{Void}) at /Users/stefan/.julia/v0.5/Hooking/src/Hooking.jl:160
 in sinthesin(::Int64) at /Users/stefan/.julia/v0.5/Gallium/examples/testprograms/misc.jl:0
 in eval(::Module, ::Any) at ./boot.jl:243

julia> versioninfo()
Julia Version 0.5.0-dev+3192
Commit fdbcdf7 (2016-03-17 14:33 UTC)
Platform Info:
  System: Darwin (x86_64-apple-darwin15.3.0)
  CPU: Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz
  WORD_SIZE: 64
  BLAS: libopenblas (USE64BITINT DYNAMIC_ARCH NO_AFFINITY Sandybridge)
  LAPACK: libopenblas64_
  LIBM: libopenlibm
  LLVM: libLLVM-3.7.1 (ORCJIT, ivybridge)