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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/94417] New: -fcf-protection -mcmodel=large is broken
Date: Mon, 30 Mar 2020 23:37:33 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94417

            Bug ID: 94417
           Summary: -fcf-protection -mcmodel=3Dlarge is broken
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
  Target Milestone: ---
            Target: x86-64

From:

https://bugs.llvm.org/show_bug.cgi?id=3D45364

Testcase:

void ext();
__attribute((noinline)) static void a() { ext(); }
void b() { a(); }

Compile with "gcc -O2 -mcmodel=3Dlarge -fcf-protection".  Note the indirect
call to "a", which does not have an endbr64.=