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bpo-39562: Prevent collision of future and compiler flags (GH-19230)

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The constant values of future flags in the __future__ module
is updated in order to prevent collision with compiler flags.
Previously PyCF_ALLOW_TOP_LEVEL_AWAIT was clashing
with CO_FUTURE_DIVISION.
This commit is contained in:
Batuhan Taşkaya 2020-04-22 19:09:03 +03:00 • committed by GitHub
parent 9b49893900
commit 4454057269
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6 changed files with 48 additions and 21 deletions
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24
Include/code.h
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@ -88,19 +88,19 @@ typedef struct {
#define CO_ITERABLE_COROUTINE 0x0100
#define CO_ASYNC_GENERATOR 0x0200
/* These are no longer used. */
#if 0
#define CO_GENERATOR_ALLOWED 0x1000
#endif
#define CO_FUTURE_DIVISION 0x2000
#define CO_FUTURE_ABSOLUTE_IMPORT 0x4000 /* do absolute imports by default */
#define CO_FUTURE_WITH_STATEMENT 0x8000
#define CO_FUTURE_PRINT_FUNCTION 0x10000
#define CO_FUTURE_UNICODE_LITERALS 0x20000
/* bpo-39562: These constant values are changed in Python 3.9
to prevent collision with compiler flags. CO_FUTURE_ and PyCF_
constants must be kept unique. PyCF_ constants can use bits from
0x0100 to 0x10000. CO_FUTURE_ constants use bits starting at 0x20000. */
#define CO_FUTURE_DIVISION 0x20000
#define CO_FUTURE_ABSOLUTE_IMPORT 0x40000 /* do absolute imports by default */
#define CO_FUTURE_WITH_STATEMENT 0x80000
#define CO_FUTURE_PRINT_FUNCTION 0x100000
#define CO_FUTURE_UNICODE_LITERALS 0x200000
#define CO_FUTURE_BARRY_AS_BDFL 0x40000
#define CO_FUTURE_GENERATOR_STOP 0x80000
#define CO_FUTURE_ANNOTATIONS 0x100000
#define CO_FUTURE_BARRY_AS_BDFL 0x400000
#define CO_FUTURE_GENERATOR_STOP 0x800000
#define CO_FUTURE_ANNOTATIONS 0x1000000
/* This value is found in the co_cell2arg array when the associated cell
variable does not correspond to an argument. */