[3.7] bpo-36367: Free buffer if realloc fails in tokenize.c (GH-12442) by vstinner · Pull Request #12471 · python/cpython
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@@ -733,9 +733,14 @@ translate_newlines(const char *s, int exec_input, struct tok_state *tok) {
}
*current = '\0';
final_length = current - buf + 1;
if (final_length < needed_length && final_length)
if (final_length < needed_length && final_length) {
/* should never fail */
buf = PyMem_REALLOC(buf, final_length);
char* result = PyMem_REALLOC(buf, final_length);
if (result == NULL) {
PyMem_FREE(buf);
}
buf = result;
}
return buf;
}
Expand Down Expand Up @@ -1050,6 +1055,7 @@ tok_nextc(struct tok_state *tok) newbuf = (char *)PyMem_REALLOC(newbuf, newsize); if (newbuf == NULL) { PyMem_FREE(tok->buf); tok->done = E_NOMEM; tok->cur = tok->inp; return EOF; Expand Down
Expand Down Expand Up @@ -1050,6 +1055,7 @@ tok_nextc(struct tok_state *tok) newbuf = (char *)PyMem_REALLOC(newbuf, newsize); if (newbuf == NULL) { PyMem_FREE(tok->buf); tok->done = E_NOMEM; tok->cur = tok->inp; return EOF; Expand Down