Implement PEP 393.
diff --git a/Lib/test/test_unicode.py b/Lib/test/test_unicode.py
index f7424c0..f256ba6 100644
--- a/Lib/test/test_unicode.py
+++ b/Lib/test/test_unicode.py
@@ -1583,16 +1583,32 @@
self.assertRaises(OverflowError, 't\tt\t'.expandtabs, sys.maxsize)
def test_raiseMemError(self):
- # Ensure that the freelist contains a consistent object, even
- # when a string allocation fails with a MemoryError.
- # This used to crash the interpreter,
- # or leak references when the number was smaller.
- charwidth = 4 if sys.maxunicode >= 0x10000 else 2
- # Note: sys.maxsize is half of the actual max allocation because of
- # the signedness of Py_ssize_t.
- alloc = lambda: "a" * (sys.maxsize // charwidth * 2)
- self.assertRaises(MemoryError, alloc)
- self.assertRaises(MemoryError, alloc)
+ if struct.calcsize('P') == 8:
+ # 64 bits pointers
+ ascii_struct_size = 64
+ compact_struct_size = 88
+ else:
+ # 32 bits pointers
+ ascii_struct_size = 32
+ compact_struct_size = 44
+
+ for char in ('a', '\xe9', '\u20ac', '\U0010ffff'):
+ code = ord(char)
+ if code < 0x100:
+ char_size = 1 # sizeof(Py_UCS1)
+ struct_size = ascii_struct_size
+ elif code < 0x10000:
+ char_size = 2 # sizeof(Py_UCS2)
+ struct_size = compact_struct_size
+ else:
+ char_size = 4 # sizeof(Py_UCS4)
+ struct_size = compact_struct_size
+ # Note: sys.maxsize is half of the actual max allocation because of
+ # the signedness of Py_ssize_t. -1 because of the null character.
+ maxlen = ((sys.maxsize - struct_size) // char_size) - 1
+ alloc = lambda: char * maxlen
+ self.assertRaises(MemoryError, alloc)
+ self.assertRaises(MemoryError, alloc)
def test_format_subclass(self):
class S(str):
@@ -1608,10 +1624,7 @@
from ctypes import (pythonapi, py_object,
c_int, c_long, c_longlong, c_ssize_t,
c_uint, c_ulong, c_ulonglong, c_size_t)
- if sys.maxunicode == 65535:
- name = "PyUnicodeUCS2_FromFormat"
- else:
- name = "PyUnicodeUCS4_FromFormat"
+ name = "PyUnicode_FromFormat"
_PyUnicode_FromFormat = getattr(pythonapi, name)
_PyUnicode_FromFormat.restype = py_object