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Two more patches by Tony Lownds (SF# 1607548).

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(1)
Combines the code paths for MAKE_FUNCTION and MAKE_CLOSURE.
Fixes a crash where functions with closures and either annotations or
keyword-only arguments result in MAKE_CLOSURE, but only
MAKE_FUNCTION has the code to handle annotations or keyword-only
arguments.
Includes enough tests to trigger the bug.

(2)
Change peepholer to not bail in the presence of EXTENDED_ARG +
MAKE_FUNCTION.
Enforce the natural 16-bit limit of annotations in compile.c.

Also update Misc/NEWS with the "input = raw_input" change.
This commit is contained in:
Guido van Rossum 2007-02-26 21:23:50 +00:00
parent f74225d63b
commit 0240b92a6c
7 changed files with 68 additions and 38 deletions
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16
Python/peephole.c
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@ -261,10 +261,12 @@ markblocks(unsigned char *code, int len)
The consts object should still be in list form to allow new constants
to be appended.
To keep the optimizer simple, it bails out (does nothing) for code
containing extended arguments or that has a length over 32,700. That
allows us to avoid overflow and sign issues. Likewise, it bails when
the lineno table has complex encoding for gaps >= 255.
To keep the optimizer simple, it bails out (does nothing) for code that
has a length over 32,700, and does not calculate extended arguments.
That allows us to avoid overflow and sign issues. Likewise, it bails when
the lineno table has complex encoding for gaps >= 255. EXTENDED_ARG can
appear before MAKE_FUNCTION; in this case both opcodes are skipped.
EXTENDED_ARG preceding any other opcode causes the optimizer to bail.
Optimizations are restricted to simple transformations occuring within a
single basic block. All transformations keep the code size the same or
@ -535,7 +537,11 @@ PyCode_Optimize(PyObject *code, PyObject* consts, PyObject *names,
break;
case EXTENDED_ARG:
goto exitUnchanged;
if (codestr[i+3] != MAKE_FUNCTION)
goto exitUnchanged;
/* don't visit MAKE_FUNCTION as GETARG will be wrong */
i += 3;
break;
/* Replace RETURN LOAD_CONST None RETURN with just RETURN */
/* Remove unreachable JUMPs after RETURN */