* TREE_USED and DECL_READ_P [not found] <1115898549.6964702.1532084663023.ref@mail.yahoo.com> @ 2018-07-20 12:19 ` å 人 ç via gcc 0 siblings, 0 replies; only message in thread From: å 人 ç via gcc @ 2018-07-20 12:19 UTC (permalink / raw) To: gcc GCC Edition:7.3.0 I find in source code/gcc/c/c-decl.c , Line 1265 to 1281 decides what situation leads to warnings for unused variables I am confused about line 1266: I think only the DECL_READ_P is enough for program to decides the warning for unused variables, so I can elmiminate " !TREE_USED(p) || " Am I right ? The comment for "DECL_READ_P": InVAR_DECL and PARM_DECL, set when the decl has been used except for being set ^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2018-07-20 11:04 UTC | newest] Thread overview: (only message) (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- [not found] <1115898549.6964702.1532084663023.ref@mail.yahoo.com> 2018-07-20 12:19 ` TREE_USED and DECL_READ_P å 人 ç via gcc
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).