Hi,
this patch avoids the attempt to create user-aligned-type for variants
original and main-variants type-alignment differ and original type
isn't user-aligned.
Not sure if this is the preferred variant, we could create for such
cases an aligned-type without setting user-align.
But as this should just happen for invalid types, I am not sure if we
actual need to handle later at all.
So I suggest the following fix for it:
ChangeLog
PR c++/65390
* tree.c (strip_typedefs): Don't attempt
to build user-aligned type if original doesn't
set it and main-variant differs to it.
Jonathan is just about to reduce the testcase, so final patch should
include reduced testcase for it.
Regression-tested for x86_64-unknown-linux-gnu. Ok for apply?
Regards,
Kai
Index: tree.c
===================================================================
--- tree.c (Revision 221277)
+++ tree.c (Arbeitskopie)
@@ -1356,7 +1356,7 @@ strip_typedefs (tree t)
if (!result)
result = TYPE_MAIN_VARIANT (t);
if (TYPE_USER_ALIGN (t) != TYPE_USER_ALIGN (result)
- || TYPE_ALIGN (t) != TYPE_ALIGN (result))
+ || (TYPE_USER_ALIGN (t) && TYPE_ALIGN (t) != TYPE_ALIGN (result)))
{
gcc_assert (TYPE_USER_ALIGN (t));
if (TYPE_ALIGN (t) == TYPE_ALIGN (result))
