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Fix two out-of-bounds array reads #99

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Apr 9, 2019
Merged

Fix two out-of-bounds array reads #99

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4 changes: 2 additions & 2 deletions ast3/Python/ast.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1445,7 +1445,7 @@ handle_keywordonly_args(struct compiling *c, const node *n, int start,
goto error;
asdl_seq_SET(kwonlyargs, j++, arg);
i += 1; /* the name */
if (TYPE(CHILD(n, i)) == COMMA)
if (i < NCH(n) && TYPE(CHILD(n, i)) == COMMA)
i += 1; /* the comma, if present */
break;
case TYPE_COMMENT:
Expand Down Expand Up @@ -1644,7 +1644,7 @@ ast_for_arguments(struct compiling *c, const node *n)
if (!kwarg)
return NULL;
i += 2; /* the double star and the name */
if (TYPE(CHILD(n, i)) == COMMA)
if (i < NCH(n) && TYPE(CHILD(n, i)) == COMMA)
i += 1; /* the comma, if present */
break;
case TYPE_COMMENT:
Expand Down