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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/108522] [12/13 Regression] ICE in
 tree-object-size when struct has VLA
Date: Tue, 24 Jan 2023 18:28:44 +0000
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X-Bugzilla-Component: tree-optimization
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X-Bugzilla-Keywords: ice-on-valid-code
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108522

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ah, actually
      off =3D size_binop (PLUS_EXPR, DECL_FIELD_OFFSET (t),
                        size_int (tree_to_uhwi (DECL_FIELD_BIT_OFFSET (t))
                                  / BITS_PER_UNIT));
So:
-      off =3D size_binop (PLUS_EXPR, DECL_FIELD_OFFSET (t),
+      off =3D size_binop (PLUS_EXPR, TREE_OPERAND (expr, 2)
+                                   ? TREE_OPERAND (expr, 2) :
DECL_FIELD_OFFSET (t),
                         size_int (tree_to_uhwi (DECL_FIELD_BIT_OFFSET (t))
                                   / BITS_PER_UNIT));
or so.=