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From: "felix-gcc at fefe dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/94444] New: __attribute__((access(...))) ignored for memcpy
 when compiling with -Os
Date: Wed, 01 Apr 2020 15:31:58 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94444

            Bug ID: 94444
           Summary: __attribute__((access(...))) ignored for memcpy when
                    compiling with -Os
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: felix-gcc at fefe dot de
  Target Milestone: ---

I read about the access attribute and proceeded to add the annotations to t=
he
string.h of my little libc. It works. But it stops working when I compile w=
ith
-Os.

I suspect it's because gcc is switching to __buildin_memcpy then?=