diff options
Diffstat (limited to 'Python')
| -rw-r--r-- | Python/ast.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/Python/ast.c b/Python/ast.c index 607281e..0885fe7 100644 --- a/Python/ast.c +++ b/Python/ast.c @@ -22,6 +22,27 @@ static int validate_stmt(struct validator *, stmt_ty); static int validate_expr(struct validator *, expr_ty, expr_context_ty); static int validate_pattern(struct validator *, pattern_ty, int); +#define VALIDATE_POSITIONS(node) \ + if (node->lineno > node->end_lineno) { \ + PyErr_Format(PyExc_ValueError, \ + "line %d-%d is not a valid range", \ + node->lineno, node->end_lineno); \ + return 0; \ + } \ + if ((node->lineno < 0 && node->end_lineno != node->lineno) || \ + (node->col_offset < 0 && node->col_offset != node->end_col_offset)) { \ + PyErr_Format(PyExc_ValueError, \ + "line %d-%d, column %d-%d is not a valid range", \ + node->lineno, node->end_lineno, node->col_offset, node->end_col_offset); \ + return 0; \ + } \ + if (node->lineno == node->end_lineno && node->col_offset > node->end_col_offset) { \ + PyErr_Format(PyExc_ValueError, \ + "line %d, column %d-%d is not a valid range", \ + node->lineno, node->col_offset, node->end_col_offset); \ + return 0; \ + } + static int validate_name(PyObject *name) { @@ -75,6 +96,7 @@ validate_args(struct validator *state, asdl_arg_seq *args) Py_ssize_t i; for (i = 0; i < asdl_seq_LEN(args); i++) { arg_ty arg = asdl_seq_GET(args, i); + VALIDATE_POSITIONS(arg); if (arg->annotation && !validate_expr(state, arg->annotation, Load)) return 0; } @@ -183,6 +205,7 @@ validate_constant(struct validator *state, PyObject *value) static int validate_expr(struct validator *state, expr_ty exp, expr_context_ty ctx) { + VALIDATE_POSITIONS(exp); int ret = -1; if (++state->recursion_depth > state->recursion_limit) { PyErr_SetString(PyExc_RecursionError, @@ -505,6 +528,7 @@ validate_capture(PyObject *name) static int validate_pattern(struct validator *state, pattern_ty p, int star_ok) { + VALIDATE_POSITIONS(p); int ret = -1; if (++state->recursion_depth > state->recursion_limit) { PyErr_SetString(PyExc_RecursionError, @@ -674,6 +698,7 @@ validate_body(struct validator *state, asdl_stmt_seq *body, const char *owner) static int validate_stmt(struct validator *state, stmt_ty stmt) { + VALIDATE_POSITIONS(stmt); int ret = -1; Py_ssize_t i; if (++state->recursion_depth > state->recursion_limit) { @@ -807,6 +832,7 @@ validate_stmt(struct validator *state, stmt_ty stmt) } for (i = 0; i < asdl_seq_LEN(stmt->v.Try.handlers); i++) { excepthandler_ty handler = asdl_seq_GET(stmt->v.Try.handlers, i); + VALIDATE_POSITIONS(handler); if ((handler->v.ExceptHandler.type && !validate_expr(state, handler->v.ExceptHandler.type, Load)) || !validate_body(state, handler->v.ExceptHandler.body, "ExceptHandler")) |