From f7a929a007e64aa9a2c7d65555029ae90c5ed6bd Mon Sep 17 00:00:00 2001 From: Peter Eisentraut Date: Tue, 22 Oct 2024 08:12:43 +0200 Subject: [PATCH] Fix C23 compiler warning The approach of declaring a function pointer with an empty argument list and hoping that the compiler will not complain about casting it to another type no longer works with C23, because foo() is now equivalent to foo(void). We don't need to do this here. With a few struct forward declarations we can supply a correct argument list without having to pull in another header file. (This is the only new warning with C23. Together with the previous fix a67a49648d9, this makes the whole code compile cleanly under C23.) Reviewed-by: Tom Lane Discussion: https://www.postgresql.org/message-id/flat/95c6a9bf-d306-43d8-b880-664ef08f2944%40eisentraut.org Discussion: https://www.postgresql.org/message-id/flat/87o72eo9iu.fsf%40gentoo.org --- src/include/nodes/pathnodes.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h index 94aebadd9f9..5e89dbffce2 100644 --- a/src/include/nodes/pathnodes.h +++ b/src/include/nodes/pathnodes.h @@ -1086,6 +1086,9 @@ typedef struct IndexOptInfo IndexOptInfo; #define HAVE_INDEXOPTINFO_TYPEDEF 1 #endif +struct IndexPath; /* avoid including pathnodes.h here */ +struct PlannerInfo; /* avoid including pathnodes.h here */ + struct IndexOptInfo { pg_node_attr(no_copy_equal, no_read, no_query_jumble) @@ -1185,7 +1188,7 @@ struct IndexOptInfo bool amcanmarkpos; /* AM's cost estimator */ /* Rather than include amapi.h here, we declare amcostestimate like this */ - void (*amcostestimate) () pg_node_attr(read_write_ignore); + void (*amcostestimate) (struct PlannerInfo *, struct IndexPath *, double, Cost *, Cost *, Selectivity *, double *, double *) pg_node_attr(read_write_ignore); }; /*