delta/cpython-git.git - github.com: python/cpython.git

	Commit message (Collapse)	Author	Age	Files	Lines
*	Fix for bug 133489: compiler leaks memory	Jeremy Hylton	2001-02-23	1	-3/+5
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	Two different but related problems: 1. PySymtable_Free() must explicitly DECREF(st->st_cur), which should always point to the global symtable entry. This entry is setup by the first enter_scope() call, but there is never a corresponding exit_scope() call. Since each entry has a reference to scopes defined within it, the missing DECREF caused all symtable entries to be leaked. 2. The leak here masked a separate problem with PySymtableEntry_New(). When the requested entry was found in st->st_symbols, the entry was returned without doing an INCREF. And problem c) The ste_children slot was getting two copies of each child entry, because it was populating the slot on the first and second passes. Now only populate on the first pass.
*	Relax the rules for using 'from ... import *' and exec in the presence	Jeremy Hylton	2001-02-09	1	-0/+147
	of nested functions. Either is allowed in a function if it contains no defs or lambdas or the defs and lambdas it contains have no free variables. If a function is itself nested and has free variables, either is illegal. Revise the symtable to use a PySymtableEntryObject, which holds all the revelent information for a scope, rather than using a bunch of st_cur_XXX pointers in the symtable struct. The changes simplify the internal management of the current symtable scope and of the stack. Added new C source file: Python/symtable.c. (Does the Windows build process need to be updated?) As part of these changes, the initial _symtable module interface introduced in 2.1a2 is replaced. A dictionary of PySymtableEntryObjects are returned.