Run test subprocesses without JIT

Author: msimacek

graalpython/com.oracle.graal.python.test/src/runner.py

@@ -81,6 +81,18 @@
 CURRENT_PLATFORM = f'{sys.platform}-{platform.machine()}'
 CURRENT_PLATFORM_KEYS = frozenset({CURRENT_PLATFORM})
 
+RUNNER_ENV = {}
+DISABLE_JIT_ENV = {'GRAAL_PYTHON_VM_ARGS': '--experimental-options --engine.Compilation=false'}
+
+# We leave the JIT enabled for the tests themselves, but disable it for subprocesses
+# noinspection PyUnresolvedReferences
+if IS_GRAALPY and __graalpython__.is_native and 'GRAAL_PYTHON_VM_ARGS' not in os.environ:
+    try:
+        subprocess.check_output([sys.executable, '--version'], env={**os.environ, **DISABLE_JIT_ENV})
+        RUNNER_ENV = DISABLE_JIT_ENV
+    except subprocess.CalledProcessError:
+        pass
+
 
 class Logger:
     report_incomplete = sys.stdout.isatty()
@@ -926,6 +938,7 @@ def parse_config(cls, config_path: Path):
             if config_tags_dir := settings.get('tags_dir'):
                 tags_dir = (config_path.parent / config_tags_dir).resolve()
             # Temporary hack for Bytecode DSL development in master branch:
+            # noinspection PyUnresolvedReferences
             if IS_GRAALPY and getattr(__graalpython__, 'is_bytecode_dsl_interpreter', False) and tags_dir:
                 new_tags_dir = (config_path.parent / (config_tags_dir + '_bytecode_dsl')).resolve()
                 if new_tags_dir.exists():
@@ -999,6 +1012,7 @@ class TestSuite:
     collected_tests: list['Test']
 
     def run(self, result):
+        os.environ.update(RUNNER_ENV)
         saved_path = sys.path[:]
         sys.path[:] = self.pythonpath
         try:

graalpython/lib-python/3/test/test_sys.py

@@ -1193,13 +1193,17 @@ def test__enablelegacywindowsfsencoding(self):
 
     @support.requires_subprocess()
     def test_orig_argv(self):
+        # GraalPy change: remove vars that could influence the test
+        env = os.environ.copy()
+        env.pop('GRAAL_PYTHON_ARGS', None)
+        env.pop('GRAAL_PYTHON_VM_ARGS', None)
         code = textwrap.dedent('''
             import sys
             print(sys.argv)
             print(sys.orig_argv)
         ''')
         args = [sys.executable, '-I', '-X', 'utf8', '-c', code, 'arg']
-        proc = subprocess.run(args, check=True, capture_output=True, text=True)
+        proc = subprocess.run(args, check=True, capture_output=True, text=True, env=env)
         expected = [
             repr(['-c', 'arg']),  # sys.argv
             repr(args),  # sys.orig_argv