Fix unportable usage of isspace().

Must cast char argument to unsigned to avoid doing the wrong thing
with high-bit-set characters.  Oversight in commit
30b5ede7157e34e77c7914b8ecfd55aa8da6edc3.

diff --git a/src/bin/pg_basebackup/pg_basebackup.c b/src/bin/pg_basebackup/pg_basebackup.c
index 1e22969d552eae9144e61b0e57ac3735d9ae14eb..56657a42c4075db4ed5c794cfbf4d2b4938e2f03 100644 (file)
--- a/src/bin/pg_basebackup/pg_basebackup.c
+++ b/src/bin/pg_basebackup/pg_basebackup.c
@@ -1134,7 +1134,7 @@ escapeConnectionParameter(const char *src)
 
    for (p = src; *p; p++)
    {
-       if (isspace(*p))
+       if (isspace((unsigned char) *p))
        {
            need_quotes = true;
            break;