bpo-40998: Address compiler warnings found by ubsan (GH-20929)

Signed-off-by: Christian Heimes <christian@python.org>

Automerge-Triggered-By: GH:tiran
(cherry picked from commit 07f2adedf0)

Co-authored-by: Christian Heimes <christian@python.org>
This commit is contained in:
Miss Islington (bot) 2020-11-18 08:01:48 -08:00 committed by GitHub
parent 802ff7c0d3
commit 994c68f586
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
4 changed files with 13 additions and 5 deletions

View file

@ -847,7 +847,11 @@ xmlcharrefreplace(_PyBytesWriter *writer, char *str,
/* generate replacement */
for (i = collstart; i < collend; ++i) {
str += sprintf(str, "&#%d;", PyUnicode_READ(kind, data, i));
size = sprintf(str, "&#%d;", PyUnicode_READ(kind, data, i));
if (size < 0) {
return NULL;
}
str += size;
}
return str;
}