From 488b7a80d9d980e0746b4f46258eed419ce453db Mon Sep 17 00:00:00 2001
From: Tim Holy <tim.holy@gmail.com>
Date: Mon, 18 Feb 2019 11:00:19 -0600
Subject: [PATCH] Make it easier to create useful bug reports from Julia tests

See the instructions in #13.
---
 test/utils.jl | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/test/utils.jl b/test/utils.jl
index 1c1bb851..d73029e2 100644
--- a/test/utils.jl
+++ b/test/utils.jl
@@ -172,6 +172,8 @@ function run_test_by_eval(test, fullpath, nstmts)
         stack = JuliaStackFrame[]
         for (i, modex) in enumerate(modexs)  # having the index can be useful for debugging
             nstmtsleft = $nstmts
+            # mod, ex = modex
+            # @show mod ex
             frame = JuliaInterpreter.prepare_thunk(modex)
             while true
                 yield()  # allow communication between processes
@@ -198,3 +200,17 @@ function run_test_by_eval(test, fullpath, nstmts)
         return ts, aborts
     end))
 end
+
+# To help debugging
+function run_compiled(frame)
+    Core.eval(moduleof(frame), Expr(:toplevel, quote
+        let pc = $frame.pc[]
+            while true   # This is finish!, except we need to run it at top level
+                new_pc = ($_step_expr!)($(Compiled()), $frame, pc, true)
+                new_pc == nothing && break
+                pc = new_pc
+            end
+            $frame.pc[] = pc
+        end
+    end))
+end