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| author | Victor Stinner <victor.stinner@gmail.com> | 2016-01-20 11:16:21 (GMT) |
|---|---|---|
| committer | Victor Stinner <victor.stinner@gmail.com> | 2016-01-20 11:16:21 (GMT) |
| commit | f3914eb16d28ad9eb20fe5133d9aa83658bcc27f (patch) | |
| tree | 65316948bcac4a6bf79e8b3791de51f11a163432 /Lib/importlib/_bootstrap_external.py | |
| parent | 316fcc867bbae652272aefb726185c12907ba8d4 (diff) | |
| download | cpython-f3914eb16d28ad9eb20fe5133d9aa83658bcc27f.zip cpython-f3914eb16d28ad9eb20fe5133d9aa83658bcc27f.tar.gz cpython-f3914eb16d28ad9eb20fe5133d9aa83658bcc27f.tar.bz2 | |
co_lnotab supports negative line number delta
Issue #26107: The format of the co_lnotab attribute of code objects changes to
support negative line number delta.
Changes:
* assemble_lnotab(): if line number delta is less than -128 or greater than
127, emit multiple (offset_delta, lineno_delta) in co_lnotab
* update functions decoding co_lnotab to use signed 8-bit integers
- dis.findlinestarts()
- PyCode_Addr2Line()
- _PyCode_CheckLineNumber()
- frame_setlineno()
* update lnotab_notes.txt
* increase importlib MAGIC_NUMBER to 3361
* document the change in What's New in Python 3.6
* cleanup also PyCode_Optimize() to use better variable names
Diffstat (limited to 'Lib/importlib/_bootstrap_external.py')
| -rw-r--r-- | Lib/importlib/_bootstrap_external.py | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/Lib/importlib/_bootstrap_external.py b/Lib/importlib/_bootstrap_external.py index f274501..71098f1 100644 --- a/Lib/importlib/_bootstrap_external.py +++ b/Lib/importlib/_bootstrap_external.py @@ -223,13 +223,14 @@ _code_type = type(_write_atomic.__code__) # Python 3.5b1 3330 (PEP 448: Additional Unpacking Generalizations) # Python 3.5b2 3340 (fix dictionary display evaluation order #11205) # Python 3.5b2 3350 (add GET_YIELD_FROM_ITER opcode #24400) -# Python 3.6a0 3360 (add FORMAT_VALUE opcode #25483) +# Python 3.6a0 3360 (add FORMAT_VALUE opcode #25483 +# Python 3.6a0 3361 (lineno delta of code.co_lnotab becomes signed) # # MAGIC must change whenever the bytecode emitted by the compiler may no # longer be understood by older implementations of the eval loop (usually # due to the addition of new opcodes). -MAGIC_NUMBER = (3360).to_bytes(2, 'little') + b'\r\n' +MAGIC_NUMBER = (3361).to_bytes(2, 'little') + b'\r\n' _RAW_MAGIC_NUMBER = int.from_bytes(MAGIC_NUMBER, 'little') # For import.c _PYCACHE = '__pycache__' |