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From: "qinzhao at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/102285] New flag -ftrivial-auto-var-init=zero causes crash in pr82421.c Date: Thu, 30 Sep 2021 22:09:13 +0000 [thread overview] Message-ID: <bug-102285-4-vP8LqgPV69@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-102285-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102285 --- Comment #12 from qinzhao at gcc dot gnu.org --- with the following change, I can resolve the ICE: [opc@qinzhao-ol8u3-x86 gcc]$ git diff diff --git a/gcc/tree-ssa-ccp.c b/gcc/tree-ssa-ccp.c index 70ce6a4d5b8d..b07026165075 100644 --- a/gcc/tree-ssa-ccp.c +++ b/gcc/tree-ssa-ccp.c @@ -2655,6 +2655,7 @@ fold_builtin_alloca_with_align (gimple *stmt) SET_DECL_PT_UID (var, uid); /* Fold alloca to the address of the array. */ + mark_addressable (var); return fold_convert (TREE_TYPE (lhs), build_fold_addr_expr (var)); } diff --git a/gcc/tree-ssa.c b/gcc/tree-ssa.c index 0fba404babe9..e06609861bf1 100644 --- a/gcc/tree-ssa.c +++ b/gcc/tree-ssa.c @@ -1657,7 +1657,7 @@ maybe_optimize_var (tree var, bitmap addresses_taken, bitmap not_reg_needs, bool maybe_reg = false; if (TREE_ADDRESSABLE (var)) { - TREE_ADDRESSABLE (var) = 0; + //TREE_ADDRESSABLE (var) = 0; maybe_reg = true; if (dump_file) { However, I am not very sure the change in tree-ssa.c. why TREE_ADDRESSABLE (var) is reverted in this routine?
next prev parent reply other threads:[~2021-09-30 22:09 UTC|newest] Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-09-10 21:50 [Bug c/102285] New: New flag -ftrivial-auto-var-init=zero causes many crashes in the testsuite dcb314 at hotmail dot com 2021-09-10 22:11 ` [Bug middle-end/102285] " qinzhao at gcc dot gnu.org 2021-09-10 22:28 ` qinzhao at gcc dot gnu.org 2021-09-10 22:34 ` pinskia at gcc dot gnu.org 2021-09-10 23:10 ` qing.zhao at oracle dot com 2021-09-12 3:33 ` qinzhao at gcc dot gnu.org 2021-09-12 8:06 ` dcb314 at hotmail dot com 2021-09-13 10:25 ` rguenth at gcc dot gnu.org 2021-09-13 17:30 ` qinzhao at gcc dot gnu.org 2021-09-29 22:44 ` [Bug middle-end/102285] New flag -ftrivial-auto-var-init=zero causes crash in pr82421.c qinzhao at gcc dot gnu.org 2021-09-30 19:30 ` qinzhao at gcc dot gnu.org 2021-09-30 20:22 ` qinzhao at gcc dot gnu.org 2021-09-30 20:53 ` dcb314 at hotmail dot com 2021-09-30 22:09 ` qinzhao at gcc dot gnu.org [this message] 2021-10-01 6:51 ` rguenth at gcc dot gnu.org 2021-10-01 9:45 ` egallager at gcc dot gnu.org 2021-10-01 16:16 ` qinzhao at gcc dot gnu.org 2021-10-01 16:43 ` qing.zhao at oracle dot com 2021-10-01 20:09 ` qinzhao at gcc dot gnu.org 2021-10-01 20:23 ` qinzhao at gcc dot gnu.org 2021-10-04 6:27 ` rguenther at suse dot de 2021-10-04 6:29 ` rguenther at suse dot de 2021-10-04 9:10 ` rguenth at gcc dot gnu.org 2021-10-04 9:30 ` rguenth at gcc dot gnu.org 2021-10-04 11:53 ` rguenth at gcc dot gnu.org 2021-10-04 14:54 ` rguenth at gcc dot gnu.org 2021-10-04 17:16 ` qinzhao at gcc dot gnu.org 2021-10-04 20:34 ` qinzhao at gcc dot gnu.org 2021-10-04 20:59 ` qinzhao at gcc dot gnu.org 2021-10-04 21:44 ` qinzhao at gcc dot gnu.org 2021-10-05 8:36 ` cvs-commit at gcc dot gnu.org 2021-10-05 8:47 ` rguenth at gcc dot gnu.org
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