Changeset 36795edf in mainline for uspace/lib/c/include/macros.h

Timestamp:

2021-03-12T19:16:51Z (4 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

a85d5c6

Parents:

17fac946

Message:

Improve lists and other data structures

Provide more standard-compliant member_to_inst implementation that uses
offsetof. Avoid potential undefined behavior in list_foreach and
list_foreach_rev by avoiding assinging an unaligned pointer value. Use
size_t instead of unsigned long for list length.

File:

• uspace/lib/c/include/macros.h (modified) (1 diff)

uspace/lib/c/include/macros.h

@@ -55 +55 @@
             | ((((uint64_t) (up)) & 0xffffffff) << 32))
 
-#define member_to_inst(ptr_member, type, member_identif) \
-        ((type *) (((void *) (ptr_member)) - \
-            ((void *) &(((type *) 0)->member_identif))))
-
 #define _paddname(line)     PADD_ ## line ## __
 #define _padd(width, line, n)  uint ## width ## _t _paddname(line) [n]