From: Richard Biener <rguenther@suse.de>
Date: Tue, 28 Nov 2023 11:36:21 +0000 (+0100)
Subject: middle-end/112732 - stray TYPE_ALIAS_SET in type variant
X-Git-Tag: basepoints/gcc-15~4205
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f26d68d5d128c86faaceeb81b1e8f22254ad53df;p=thirdparty%2Fgcc.git

middle-end/112732 - stray TYPE_ALIAS_SET in type variant

The following fixes a stray TYPE_ALIAS_SET in a type variant built
by build_opaque_vector_type which is diagnosed by type checking
enabled with -flto.

	PR middle-end/112732
	* tree.cc (build_opaque_vector_type): Reset TYPE_ALIAS_SET
	of the newly built type.
---

diff --git a/gcc/tree.cc b/gcc/tree.cc
index e9f703e7237b..10c6e1ecc588 100644
--- a/gcc/tree.cc
+++ b/gcc/tree.cc
@@ -10274,6 +10274,8 @@ build_opaque_vector_type (tree innertype, poly_int64 nunits)
   TYPE_NEXT_VARIANT (cand) = TYPE_NEXT_VARIANT (t);
   TYPE_NEXT_VARIANT (t) = cand;
   TYPE_MAIN_VARIANT (cand) = TYPE_MAIN_VARIANT (t);
+  /* Type variants have no alias set defined.  */
+  TYPE_ALIAS_SET (cand) = -1;
   return cand;
 }