Jul 15, 2025 · Jul 16, 2025 · Jul 16, 2025 · Jul 16, 2025 · Jul 16, 2025 · Jul 17, 2025
diff --git a/Lib/test/test_jit_stencils.py b/Lib/test/test_jit_stencils.py
 import asyncio
 import pathlib
 import shlex
 import sys
 import sysconfig
 import tempfile
 import test.support
 import test.test_tools
 import test.support.script_helper
 import unittest

 _TOOLS_JIT_TEST_TEST_EXECUTOR_CASES_C_H = _TOOLS_JIT_TEST / "test_executor_cases.c.h"
 _TOOLS_JIT_BUILD_PY = _TOOLS_JIT / "build.py"

 test.test_tools.skip_if_missing("jit")
 with test.test_tools.imports_under_tool("jit"):
    import _llvm

 @test.support.cpython_only
 @unittest.skipIf(test.support.Py_DEBUG, "Debug stencils aren't tested.")
 @unittest.skipIf(test.support.Py_GIL_DISABLED, "Free-threaded stencils aren't tested.")
 @unittest.skipUnless(sysconfig.is_python_build(), "Requires a local Python build.")
 class TestJITStencils(unittest.TestCase):

    def _build_jit_stencils(self, target: str) -> str:
                "--pyconfig-dir", pyconfig_h.parent,
                target,
                __isolated=False,
                # Windows leaks temporary files on failure because the JIT build
                # process is async. This forces it to be "sync" for this test:
                PYTHON_CPU_COUNT="1",
            )
            if result.rc:
                self.skipTest(f"Build failed: {shlex.join(map(str, args))}")
            raise

    def test_jit_stencils(self):
        if not asyncio.run(_llvm._find_tool("clang")):
            self.skipTest(f"LLVM {_llvm._LLVM_VERSION} isn't installed.")
        self.maxDiff = None
        found = False
        for test_jit_stencils_h in _TOOLS_JIT_TEST.glob("test_jit_stencils-*.h"):
                found = True
                self._check_jit_stencils(expected, actual, test_jit_stencils_h)
        # This is a local build. If the JIT is available, at least one test should run:
        assert found or not sys._jit.is_available(), "No JIT stencils built!"
        assert found, "No JIT stencils built!"


 if __name__ == "__main__":
Original file line number	Diff line number	Diff line change
		@@ -1,9 +1,10 @@
		import asyncio
		import pathlib
		import shlex
		import sys
		import sysconfig
		import tempfile
		import test.support
		import test.test_tools
		import test.support.script_helper
		import unittest

Expand All		@@ -13,11 +14,13 @@
		_TOOLS_JIT_TEST_TEST_EXECUTOR_CASES_C_H = _TOOLS_JIT_TEST / "test_executor_cases.c.h"
		_TOOLS_JIT_BUILD_PY = _TOOLS_JIT / "build.py"

		test.test_tools.skip_if_missing("jit")
		with test.test_tools.imports_under_tool("jit"):
		import _llvm

		@test.support.cpython_only
		@unittest.skipIf(test.support.Py_DEBUG, "Debug stencils aren't tested.")
		@unittest.skipIf(test.support.Py_GIL_DISABLED, "Free-threaded stencils aren't tested.")
		@unittest.skipUnless(sysconfig.is_python_build(), "Requires a local Python build.")
		class TestJITStencils(unittest.TestCase):

		def _build_jit_stencils(self, target: str) -> str:
Expand All		@@ -31,6 +34,9 @@ def _build_jit_stencils(self, target: str) -> str:
		"--pyconfig-dir", pyconfig_h.parent,
		target,
		__isolated=False,
		# Windows leaks temporary files on failure because the JIT build
		# process is async. This forces it to be "sync" for this test:
		PYTHON_CPU_COUNT="1",
		)
		if result.rc:
		self.skipTest(f"Build failed: {shlex.join(map(str, args))}")
Expand All		@@ -54,6 +60,8 @@ def _check_jit_stencils(
		raise

		def test_jit_stencils(self):
		if not asyncio.run(_llvm._find_tool("clang")):
		self.skipTest(f"LLVM {_llvm._LLVM_VERSION} isn't installed.")
		self.maxDiff = None
		found = False
		for test_jit_stencils_h in _TOOLS_JIT_TEST.glob("test_jit_stencils-*.h"):
Expand All		@@ -64,7 +72,7 @@ def test_jit_stencils(self):
		found = True
		self._check_jit_stencils(expected, actual, test_jit_stencils_h)
		# This is a local build. If the JIT is available, at least one test should run:
		assert found or not sys._jit.is_available(), "No JIT stencils built!"
		assert found, "No JIT stencils built!"


		if __name__ == "__main__":
Expand Down