Skip to main content

Browse the archive

Staging
v0.8.1
Revision e727d41ffcd91b21ce82026ec8c8381d34a16209 authored by Victor Stinner on 18 September 2017, 12:29:37 UTC, committed by GitHub on 18 September 2017, 12:29:37 UTC 
bpo-31499, xml.etree: Fix xmlparser_gc_clear() crash (#3641)
 
* bpo-31499, xml.etree: Fix xmlparser_gc_clear() crash

xml.etree: xmlparser_gc_clear() now sets self.parser to NULL to prevent a
crash in xmlparser_dealloc() if xmlparser_gc_clear() was called previously
by the garbage collector, because the parser was part of a reference cycle.

Co-Authored-By: Serhiy Storchaka <storchaka@gmail.com>
1 parent 9b47af6
Raw File
parser.h 
#ifndef Py_PARSER_H
#define Py_PARSER_H
#ifdef __cplusplus
extern "C" {
#endif


/* Parser interface */

#define MAXSTACK 1500

typedef struct {
	int		 s_state;	/* State in current DFA */
	dfa		*s_dfa;		/* Current DFA */
	struct _node	*s_parent;	/* Where to add next node */
} stackentry;

typedef struct {
	stackentry	*s_top;		/* Top entry */
	stackentry	 s_base[MAXSTACK];/* Array of stack entries */
					/* NB The stack grows down */
} stack;

typedef struct {
	stack	 	p_stack;	/* Stack of parser states */
	grammar		*p_grammar;	/* Grammar to use */
	node		*p_tree;	/* Top of parse tree */
#ifdef PY_PARSER_REQUIRES_FUTURE_KEYWORD
	unsigned long	p_flags;	/* see co_flags in Include/code.h */
#endif
} parser_state;

parser_state *PyParser_New(grammar *g, int start);
void PyParser_Delete(parser_state *ps);
int PyParser_AddToken(parser_state *ps, int type, char *str, int lineno, int col_offset,
                      int *expected_ret);
void PyGrammar_AddAccelerators(grammar *g);

#ifdef __cplusplus
}
#endif
#endif /* !Py_PARSER_H */
back to top