cast: New macro NULL_SENTINEL.

[pspp] / src / output / options.c

diff --git a/src/output/options.c b/src/output/options.c
index e0259f0936246e9f5f49a184de9239176eaf57e6..694ffc233ebe86aea4b5ba4bcf2b12e4a54f4929 100644 (file)
--- a/src/output/options.c
+++ b/src/output/options.c
@@ -145,7 +145,7 @@ parse_boolean (struct driver_option *o)
    O has no user-specified value, then O's default value is treated the same
    way.  If the default value still does not match, parse_enum() returns 0.
 
-   Example: parse_enum (o, "a", 1, "b", 2, NULL) returns 1 if O's
+   Example: parse_enum (o, "a", 1, "b", 2, NULL_SENTINEL) returns 1 if O's
    value if "a", 2 if O's value is "b".
 
    Destroys O. */