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From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ada/21242] ACATS wrong array copy code c52102b c52102d (works with -fno-tree-dce)
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------- Additional Comments From pinskia at gcc dot gnu dot org  2005-06-19 12:33 -------
Huh:
  #   VUSE <D.486_68>;
  #   VUSE <C.26_118>;
  (*a.3_27)[-1 ...]{lb: -1 sz: 1} = D.486;

Why is there no V_MUST_DEF/V_MAY_DEF in there?

This is an aliasing bug.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21242