Mercurial > cpython-lru_cache-weakref
diff Python/ast.c @ 36001:6321669f2f4d legacy-trunk
SF #1377897, Bus error in ast
If a line had multiple semi-colons and ended with a semi-colon, we would
loop too many times and access a NULL node. Exit the loop early if
there are no more children.
| author | Neal Norwitz <nnorwitz@gmail.com> |
|---|---|
| date | Sun, 11 Dec 2005 20:12:40 +0000 |
| parents | cc3261597136 |
| children | ea083efdc96c |
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--- a/Python/ast.c Sun Dec 11 20:08:33 2005 +0000 +++ b/Python/ast.c Sun Dec 11 20:12:40 2005 +0000 @@ -2562,6 +2562,11 @@ ch = CHILD(ch, 0); REQ(ch, simple_stmt); for (j = 0; j < NCH(ch); j += 2) { + /* statement terminates with a semi-colon ';' */ + if (NCH(CHILD(ch, j)) == 0) { + assert((j + 1) == NCH(ch)); + break; + } s = ast_for_stmt(c, CHILD(ch, j)); if (!s) goto error;