pythongh-93678: Address stack exhaustion on WASI

Commit 75c0c1b added function calls that increase stack consumption
slightly. This pushed recursion tests over the call stack limit of
wasmtime and broke three tests on wasm32-wasi.

Skip two tests and lower recursion limit of the third test.

Lib/test/test_compile.py

@@ -108,6 +108,7 @@ def __getitem__(self, key):
         exec('z = a', g, d)
         self.assertEqual(d['z'], 12)
 
+    @unittest.skipIf(support.is_wasi, "exhausts limited stack on WASI")
     def test_extended_arg(self):
         # default: 1000 * 2.5 = 2500 repetitions
         repeat = int(sys.getrecursionlimit() * 2.5)
@@ -542,6 +543,7 @@ def test_yet_more_evil_still_undecodable(self):
         self.assertIn(b"Non-UTF-8", res.err)
 
     @support.cpython_only
+    @unittest.skipIf(support.is_wasi, "exhausts limited stack on WASI")
     def test_compiler_recursion_limit(self):
         # Expected limit is sys.getrecursionlimit() * the scaling factor
         # in symtable.c (currently 3)

Lib/test/test_dynamic.py

@@ -1,6 +1,7 @@
 # Test the most dynamic corner cases of Python's runtime semantics.
 
 import builtins
+import sys
 import unittest
 
 from test.support import swap_item, swap_attr
@@ -139,12 +140,14 @@ class MyGlobals(dict):
             def __missing__(self, key):
                 return int(key.removeprefix("_number_"))
 
-        code = "lambda: " + "+".join(f"_number_{i}" for i in range(1000))
-        sum_1000 = eval(code, MyGlobals())
-        expected = sum(range(1000))
+        # 1,000 on most systems
+        limit = sys.getrecursionlimit()
+        code = "lambda: " + "+".join(f"_number_{i}" for i in range(limit))
+        sum_func = eval(code, MyGlobals())
+        expected = sum(range(limit))
         # Warm up the the function for quickening (PEP 659)
         for _ in range(30):
-            self.assertEqual(sum_1000(), expected)
+            self.assertEqual(sum_func(), expected)
 
 if __name__ == "__main__":
     unittest.main()