llvmbot wrote:

<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-lldb

Author: None (jimingham)

<details>
<summary>Changes</summary>

We didn't also copy over the next stop hook id, which meant we would overwrite 
the stop hooks from the dummy target with stop hooks set after they are copied 
over.

---
Full diff: https://github.com/llvm/llvm-project/pull/129340.diff


2 Files Affected:

- (modified) lldb/source/Target/Target.cpp (+1) 
- (modified) lldb/test/API/commands/target/stop-hooks/TestStopHooks.py (+22-2) 


``````````diff
diff --git a/lldb/source/Target/Target.cpp b/lldb/source/Target/Target.cpp
index db289fe9c4b64..550424720e095 100644
--- a/lldb/source/Target/Target.cpp
+++ b/lldb/source/Target/Target.cpp
@@ -211,6 +211,7 @@ Target::~Target() {
 
 void Target::PrimeFromDummyTarget(Target &target) {
   m_stop_hooks = target.m_stop_hooks;
+  m_stop_hook_next_id = target.m_stop_hook_next_id;
 
   for (const auto &breakpoint_sp : target.m_breakpoint_list.Breakpoints()) {
     if (breakpoint_sp->IsInternal())
diff --git a/lldb/test/API/commands/target/stop-hooks/TestStopHooks.py 
b/lldb/test/API/commands/target/stop-hooks/TestStopHooks.py
index fe59bd8a5d007..5215ec7258d14 100644
--- a/lldb/test/API/commands/target/stop-hooks/TestStopHooks.py
+++ b/lldb/test/API/commands/target/stop-hooks/TestStopHooks.py
@@ -26,10 +26,15 @@ def test_stop_hooks_step_out(self):
         self.step_out_test()
 
     def test_stop_hooks_after_expr(self):
-        """Test that a stop hook fires when hitting a breakpoint
-        that runs an expression"""
+        """Test that a stop hook fires when hitting a breakpoint that
+           runs an expression"""
         self.after_expr_test()
 
+    def test_stop_hooks_before_and_after_creation(self):
+        """Test that if we add a stop hook in the dummy target, we can
+           they don't collide with ones set directly in the target."""
+        self.before_and_after_target()
+
     def step_out_test(self):
         (target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(
             self, "Set a breakpoint here", self.main_source_file
@@ -85,3 +90,18 @@ def after_expr_test(self):
         var = target.FindFirstGlobalVariable("g_var")
         self.assertTrue(var.IsValid())
         self.assertEqual(var.GetValueAsUnsigned(), 1, "Updated g_var")
+
+    def before_and_after_target(self):
+        interp = self.dbg.GetCommandInterpreter()
+        result = lldb.SBCommandReturnObject()
+        interp.HandleCommand("target stop-hook add -o 'expr g_var++'", result)
+        self.assertTrue(result.Succeeded(), "Set the target stop hook")
+
+        (target, process, thread, first_bkpt) = 
lldbutil.run_to_source_breakpoint(
+            self, "Set a breakpoint here", self.main_source_file
+        )
+
+        interp.HandleCommand("target stop-hook add -o 'thread backtrace'", 
result)
+        self.assertTrue(result.Succeeded(), "Set the target stop hook")
+        self.expect("target stop-hook list", substrs=["expr g_var++", "thread 
backtrace"])
+

``````````

</details>


https://github.com/llvm/llvm-project/pull/129340
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