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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/94717] [10 Regression] segfault with -O2
 -fnon-call-exceptions -ftracer
Date: Thu, 23 Apr 2020 12:17:30 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94717

--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> The compiler is apparently not prepared for new trapping loads.  Fixing...

No, just a missing check on landing pads:

index a6687cd9c98..4ab8e0250ab 100644
--- a/gcc/gimple-ssa-store-merging.c
+++ b/gcc/gimple-ssa-store-merging.c
@@ -2680,6 +2680,7 @@ imm_store_chain_info::coalesce_immediate_stores ()
         p[3] =3D data;
         using the bswap framework.  */
       if (info->bitpos =3D=3D merged_store->start + merged_store->width
+         && info->lp_nr =3D=3D merged_store->lp_nr
          && merged_store->stores.length () =3D=3D 1
          && merged_store->stores[0]->ins_stmt !=3D NULL
          && info->ins_stmt !=3D NULL)=