================
@@ -44,6 +44,34 @@ def step_out_with_scripted_plan(self, name):
stop_desc = thread.GetStopDescription(1000)
self.assertIn("Stepping out from", stop_desc, "Got right description")
+ def test_step_single_instruction(self):
+ self.build()
+ (target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(
+ self, "Break on foo call", self.main_source_file
+ )
+
+ err = thread.StepUsingScriptedThreadPlan("Steps.StepSingleInstruction")
+ self.assertSuccess(err)
+
+ # Verify that stepping a single instruction after "foo();" steps into
`foo`
+ frame = thread.GetFrameAtIndex(0)
+ self.assertEqual("foo", frame.GetFunctionName())
+
+ def test_step_single_instruction_with_step_over(self):
+ self.build()
+ (target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(
+ self, "Break on foo call", self.main_source_file
+ )
+
+ err = thread.StepUsingScriptedThreadPlan(
+ "Steps.StepSingleInstructionWithStepOver"
+ )
+ self.assertSuccess(err)
+
+ # Verify that stepping over an instruction doesn't step into `foo`
+ frame = thread.GetFrameAtIndex(0)
+ self.assertEqual("main", frame.GetFunctionName())
----------------
jimingham wrote:
You might also assert before the nexti that you really are at a branch (you can
get the instruction list for the function, find the instruction you are stopped
at and ask it IsBranch. It seems really unlikely that any
compiler/architecture would do more for a call to a `void (*)(void)` would emit
more than a single branch and link, but it's better not to rely on that.
https://github.com/llvm/llvm-project/pull/137904
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