fix assertion when breakpoint triggers during wrapper step through (#225)

* fix when breakpoint happens during wrapper step through

* Update test/debug.jl

Co-Authored-By: KristofferC <[email protected]>

Author: KristofferC

src/commands.jl

@@ -244,7 +244,9 @@ function maybe_step_through_wrapper!(@nospecialize(recurse), frame::Frame)
         # this is a wrapper function that we might want to step through
         while frame.pc != length(stmts)-1
             pc = next_call!(recurse, frame, false)  # since we're in a Method we're not at toplevel
-            pc === nothing && return frame
+            if pc === nothing || isa(pc, BreakpointRef)
+                return frame
+            end
         end
         ret = evaluate_call!(dummy_breakpoint, frame, last)
         @assert isa(ret, BreakpointRef)

test/debug.jl

@@ -425,6 +425,14 @@ struct B{T} end
         @test frame.pc == 1
     end
 
+    @testset "breakpoints hit during wrapper step through" begin
+        f(x = g()) = x
+        g() = 5
+        @breakpoint g()
+        frame = JuliaInterpreter.enter_call(f)
+        JuliaInterpreter.maybe_step_through_wrapper!(frame)
+        @test leaf(frame).framecode.scope == @which g()
+    end
 
     @testset "preservation of stack when throwing to toplevel" begin
         f() = "αβ"[2]