X-Git-Url: https://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Ftcon%2Ftcon.h;h=866c2111e9c942f34c7f51f255f6ab2e3b552cca;hp=5b38c7193406fa1ccae181dbfde21849ace70601;hb=cafea330f28cd9fc5588ea547889770ca009185a;hpb=5c451bbbed80e3bcb1f6be4301026ece01ab1309

diff --git a/ccan/tcon/tcon.h b/ccan/tcon/tcon.h
index 5b38c719..866c2111 100644
--- a/ccan/tcon/tcon.h
+++ b/ccan/tcon/tcon.h
@@ -9,11 +9,11 @@
  *
  * This declares a _tcon member for a structure.  It should be the
  * last element in your structure; with sufficient compiler support it
- * will not use any actual storage.  tcon_to_raw() will compare
+ * will not use any actual storage.  tcon_check() will compare
  * expressions with one of these "type canaries" to cause warnings if
  * the container is misused.
  *
- * A type of "void *" will allow tcon_to_raw() to pass on any (pointer) type.
+ * A type of "void *" will allow tcon_check() to pass on any (pointer) type.
  *
  * Example:
  *	// Simply typesafe linked list.
@@ -74,8 +74,10 @@
  */
 #if HAVE_TYPEOF
 #define tcon_cast(x, canary, expr) ((__typeof__((x)->_tcon[0].canary))(expr))
+#define tcon_cast_ptr(x, canary, expr) ((__typeof__(&(x)->_tcon[0].canary))(expr))
 #else
 #define tcon_cast(x, canary, expr) ((void *)(expr))
+#define tcon_cast_ptr(x, canary, expr) ((void *)(expr))
 #endif
 
 #endif /* CCAN_TCON_H */