gcc/libgo/runtime/go-map-len.c
Ian Lance Taylor b39c10b813 Unify handling of runtime support functions.
This introduces the new approach, and rewrites the lowering
code which uses runtime functions.  The code which calls
runtime functions at GENERIC conversion time is not yet
rewritten.

From-SVN: r172396
2011-04-13 21:00:59 +00:00

24 lines
624 B
C

/* go-map-len.c -- return the length of a map.
Copyright 2009 The Go Authors. All rights reserved.
Use of this source code is governed by a BSD-style
license that can be found in the LICENSE file. */
#include <stddef.h>
#include "go-assert.h"
#include "map.h"
/* Return the length of a map. This could be done inline, of course,
but I'm doing it as a function for now to make it easy to change
the map structure. */
int
__go_map_len (struct __go_map *map)
{
if (map == NULL)
return 0;
__go_assert (map->__element_count == (size_t) (int) map->__element_count);
return map->__element_count;
}