From 10d275fdf8bd55f438476ec5f08d55d2185b0042 Mon Sep 17 00:00:00 2001
From: Charlie Lin <tuug@gmx.us>
Date: Mon, 13 Apr 2026 09:05:34 -0400
Subject: [PATCH] gh-148483: Use Py_GCC_ATTRIBUTE(unused) for stop_tracing
 label (GH-148481)

---
 .gitignore                                                    | 1 +
 .../next/Build/2026-04-13-02-36-13.gh-issue-148483.gLe1h8.rst | 1 +
 Modules/_testinternalcapi/test_cases.c.h                      | 3 +++
 Python/generated_cases.c.h                                    | 3 +++
 Tools/cases_generator/tier1_generator.py                      | 4 ++++
 5 files changed, 12 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Build/2026-04-13-02-36-13.gh-issue-148483.gLe1h8.rst

diff --git a/.gitignore b/.gitignore
index f9d2cdfc32b..3bf5187d531 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,6 +5,7 @@
 *.cover
 *.iml
 *.o
+*.o.tmp
 *.lto
 *.a
 *.so
diff --git a/Misc/NEWS.d/next/Build/2026-04-13-02-36-13.gh-issue-148483.gLe1h8.rst b/Misc/NEWS.d/next/Build/2026-04-13-02-36-13.gh-issue-148483.gLe1h8.rst
new file mode 100644
index 00000000000..5b9b3069887
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2026-04-13-02-36-13.gh-issue-148483.gLe1h8.rst
@@ -0,0 +1 @@
+Use ``Py_GCC_ATTRIBUTE(unused)`` for stop_tracing label.
diff --git a/Modules/_testinternalcapi/test_cases.c.h b/Modules/_testinternalcapi/test_cases.c.h
index 5ed7d7be41b..041adcff388 100644
--- a/Modules/_testinternalcapi/test_cases.c.h
+++ b/Modules/_testinternalcapi/test_cases.c.h
@@ -12943,6 +12943,9 @@ JUMP_TO_LABEL(error);
             DISPATCH();
         }
 
+        #if _Py_TAIL_CALL_INTERP && !defined(_Py_TIER2)
+        Py_GCC_ATTRIBUTE((unused))
+        #endif
         LABEL(stop_tracing)
         {
             #if _Py_TIER2
diff --git a/Python/generated_cases.c.h b/Python/generated_cases.c.h
index 6aa6fe445a2..ae01925077c 100644
--- a/Python/generated_cases.c.h
+++ b/Python/generated_cases.c.h
@@ -12940,6 +12940,9 @@ JUMP_TO_LABEL(error);
             DISPATCH();
         }
 
+        #if _Py_TAIL_CALL_INTERP && !defined(_Py_TIER2)
+        Py_GCC_ATTRIBUTE((unused))
+        #endif
         LABEL(stop_tracing)
         {
             #if _Py_TIER2
diff --git a/Tools/cases_generator/tier1_generator.py b/Tools/cases_generator/tier1_generator.py
index 0334bec724d..d2fa749e141 100644
--- a/Tools/cases_generator/tier1_generator.py
+++ b/Tools/cases_generator/tier1_generator.py
@@ -203,6 +203,10 @@ def generate_tier1_labels(
     emitter.emit("\n")
     # Emit tail-callable labels as function defintions
     for name, label in analysis.labels.items():
+        if name == 'stop_tracing':
+            emitter.emit("#if _Py_TAIL_CALL_INTERP && !defined(_Py_TIER2)\n")
+            emitter.emit("Py_GCC_ATTRIBUTE((unused))\n")
+            emitter.emit("#endif\n")
         emitter.emit(f"LABEL({name})\n")
         storage = Storage(Stack(), [], [], 0, False)
         if label.spilled: