This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

RFA: PATCH to build_type_attribute_qual_variant for c++/84314, ICE with fastcall

From: Jason Merrill <jason at redhat dot com>
To: gcc-patches List <gcc-patches at gcc dot gnu dot org>
Date: Wed, 14 Feb 2018 12:10:51 -0500
Subject: RFA: PATCH to build_type_attribute_qual_variant for c++/84314, ICE with fastcall
Authentication-results: sourceware.org; auth=none

This testcase involves a fastcall-qualified function type.  During
mangling, we use build_type_attribute_qual_variant to look up an
attribute-unqualified version of that type.
build_type_attribute_qual_variant calls type_hash_canon and finds the
original unqualified type, but then clobbers its TYPE_CANONICAL
because it's incompatible with the fastcall-qualified type.

Fixed by leaving TYPE_CANONICAL of a previously existing type alone.

Tested x86_64-pc-linux-gnu.  OK for trunk?

Attachment: 84314.diff
Description: Text document

Follow-Ups:
- Re: RFA: PATCH to build_type_attribute_qual_variant for c++/84314, ICE with fastcall
  - From: Richard Biener

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]