Fix parallel test suite failure reporting with python 3.11 (#19517)

Forked from #19219

Co-authored-by: Jukka Jylänki <jujjyl@gmail.com>

Author: sbc100

test/parallel_testsuite.py

@@ -167,23 +167,41 @@ def updateResult(self, result):
     result.addSkip(self.test, self.reason)
 
 
+def fixup_fake_exception(fake_exc):
+  ex = fake_exc[2]
+  if ex.tb_frame.f_code.positions is None:
+    return
+  while ex is not None:
+    # .co_positions is supposed to be a function that returns an enumerable
+    # to the list of code positions. Create a function object wrapper around
+    # the data
+    def make_wrapper(rtn):
+      return lambda: rtn
+    ex.tb_frame.f_code.co_positions = make_wrapper(ex.tb_frame.f_code.positions)
+    ex = ex.tb_next
+
+
 class BufferedTestFailure(BufferedTestBase):
   def updateResult(self, result):
+    fixup_fake_exception(self.error)
     result.addFailure(self.test, self.error)
 
 
 class BufferedTestExpectedFailure(BufferedTestBase):
   def updateResult(self, result):
+    fixup_fake_exception(self.error)
     result.addExpectedFailure(self.test, self.error)
 
 
 class BufferedTestError(BufferedTestBase):
   def updateResult(self, result):
+    fixup_fake_exception(self.error)
     result.addError(self.test, self.error)
 
 
 class BufferedTestUnexpectedSuccess(BufferedTestBase):
   def updateResult(self, result):
+    fixup_fake_exception(self.error)
     result.addUnexpectedSuccess(self.test)
 
 
@@ -203,6 +221,7 @@ def __init__(self, tb):
     self.tb_frame = FakeFrame(tb.tb_frame)
     self.tb_lineno = tb.tb_lineno
     self.tb_next = FakeTraceback(tb.tb_next) if tb.tb_next is not None else None
+    self.tb_lasti = tb.tb_lasti
 
 
 class FakeFrame():
@@ -216,6 +235,12 @@ class FakeCode():
   def __init__(self, co):
     self.co_filename = co.co_filename
     self.co_name = co.co_name
+    # co.co_positions() returns an iterator. Flatten it to a list so that it can
+    # be pickled to the parent process
+    if hasattr(co, 'co_positions'):
+      self.positions = list(co.co_positions())
+    else:
+      self.positions = None
 
 
 def num_cores():