[Lldb-commits] [lldb] [lldb] Expose QueueThreadPlanForStepSingleInstruction function to SBThreadPlan (PR #137904)

[Ely Ronnen via lldb-commits]

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@@ -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())
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eronnen wrote:

I think that testing a branch is more powerful though, because in a case of a non branch instruction both `stepi` and `nexti` would step into the same instruction

https://github.com/llvm/llvm-project/pull/137904