MirrorHub/construct
0
0
Fork 0
mirror of https://github.com/matrix-construct/construct synced 2024-07-05 01:58:35 +02:00
Code Issues Releases Wiki Activity

ircd::util: Add util to output the sizeof() something at compile time.

Browse source 
This produces an error which stops compilation, but the result of sizeof()
is given in the error message.
This commit is contained in:
Jason Volk 2016-09-06 09:50:59 -07:00
parent 8eeb6af31f
commit 7ae8449078
1 changed files with 13 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
include/ircd/util.h
View file

@ -324,6 +324,19 @@ UNIT_LITERAL_LD( PB, val * 1000.0L * 1000.0L * 1000.0L * 1000.0L * 1000.0L
UNIT_LITERAL_LD( EB, val * 1000.0L * 1000.0L * 1000.0L * 1000.0L * 1000.0L * 1000.0L )
/* Output the sizeof a structure at compile time.
* This stops the compiler with an error (good) containing the size of the target
* in the message.
*
* example: struct foo {}; IRCD_TEST_SIZEOF(foo)
*/
template<size_t SIZE>
struct _TEST_SIZEOF_;
#define IRCD_TEST_SIZEOF(name) \
ircd::util::_TEST_SIZEOF_<sizeof(name)> _test_;
} // namespace util
} // namespace ircd
#endif // __cplusplus