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correctly overflow when indexes are too large

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Benjamin Peterson 2010-06-07 22:23:23 +00:00
parent 0b41707dde
commit 13e934acc0
3 changed files with 10 additions and 0 deletions
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4
Objects/stringlib/string_format.h
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@ -373,6 +373,8 @@ FieldNameIterator_next(FieldNameIterator *self, int *is_attribute,
if (_FieldNameIterator_item(self, name) == 0)
return 0;
*name_idx = get_integer(name);
if (*name_idx == -1 && PyErr_Occurred())
return 0;
break;
default:
/* Invalid character follows ']' */
@ -429,6 +431,8 @@ field_name_split(STRINGLIB_CHAR *ptr, Py_ssize_t len, SubString *first,
/* see if "first" is an integer, in which case it's used as an index */
*first_idx = get_integer(first);
if (*first_idx == -1 && PyErr_Occurred())
return 0;
field_name_is_empty = first->ptr >= first->end;