Consistently pass an "unsigned char" to ctype.h functions.
The isxdigit() calls relied on undefined behavior. The isascii() call
was well-defined, but our prevailing style is to include the cast.
Back-patch to 9.4, where the isxdigit() calls were introduced.
Branch
------
master
Details
-------
http://git.postgresql.org/pg/commitdiff/333b7db8b39679acf0665b3fc4ad99cbc14fbba7
Modified Files
--------------
contrib/pg_upgrade/controldata.c | 2 +-
src/backend/utils/adt/json.c | 7 +++++--
2 files changed, 6 insertions(+), 3 deletions(-)