From 9e06310aabba363ce6b8e9ecc82a262c529feb96 Mon Sep 17 00:00:00 2001 From: Zdenek Kabelac Date: Mon, 20 Dec 2010 13:39:12 +0000 Subject: [PATCH] Use const char* for offset calculation As 'const' types are also passed to macro dm_list_struct_base - keep offset calculation with const char pointers. Fixes several gcc constness warnings. --- libdm/libdevmapper.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libdm/libdevmapper.h b/libdm/libdevmapper.h index d3850303b..4aa99910b 100644 --- a/libdm/libdevmapper.h +++ b/libdm/libdevmapper.h @@ -814,7 +814,7 @@ struct dm_list *dm_list_next(const struct dm_list *head, const struct dm_list *e * contained in a structure of type t, return the containing structure. */ #define dm_list_struct_base(v, t, head) \ - ((t *)((char*)(v) - (char*)&((t *) 0)->head)) + ((t *)((const char *)(v) - (const char *)&((t *) 0)->head)) /* * Given the address v of an instance of 'struct dm_list list' contained in