Thread: pgsql: Consistently pass an "unsigned char" to ctype.h functions.

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
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master

Details
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http://git.postgresql.org/pg/commitdiff/333b7db8b39679acf0665b3fc4ad99cbc14fbba7

Modified Files
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contrib/pg_upgrade/controldata.c |    2 +-
src/backend/utils/adt/json.c     |    7 +++++--
2 files changed, 6 insertions(+), 3 deletions(-)