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From: "jamborm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ipa/99122] [10/11 Regression] ICE in force_constant_size, at
 gimplify.c:733
Date: Wed, 17 Feb 2021 17:03:55 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99122

--- Comment #3 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Looking at how expr.c deals with WITH_SIZE_EXPR, perhaps we should do somet=
hing
like the following:

diff --git a/gcc/tree-inline.c b/gcc/tree-inline.c
index a710fa59027..cdabeb6bafd 100644
--- a/gcc/tree-inline.c
+++ b/gcc/tree-inline.c
@@ -3418,6 +3418,9 @@ force_value_to_type (tree type, tree value)
      Still if we end up with truly mismatched types here, fall back
      to using a VIEW_CONVERT_EXPR or a literal zero to not leak invalid
      GIMPLE to the following passes.  */
+  if (TREE_CODE (value) =3D=3D WITH_SIZE_EXPR)
+    value =3D TREE_OPERAND (value, 0);
+
   if (!is_gimple_reg_type (TREE_TYPE (value))
           || TYPE_SIZE (type) =3D=3D TYPE_SIZE (TREE_TYPE (value)))
     return fold_build1 (VIEW_CONVERT_EXPR, type, value);=