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From: "gprocida+abigail at google dot com" <sourceware-bugzilla@sourceware.org>
To: libabigail@sourceware.org
Subject: [Bug default/27660] New: abidw is confused by templated types with
 non-type parameters
Date: Mon, 29 Mar 2021 15:00:39 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D27660

            Bug ID: 27660
           Summary: abidw is confused by templated types with non-type
                    parameters
           Product: libabigail
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: default
          Assignee: dodji at redhat dot com
          Reporter: gprocida+abigail at google dot com
                CC: libabigail at sourceware dot org
  Target Milestone: ---

This issue was noticed during a bulk check for duplicate, conflicting type
definitions in XML.

$ <tests/data/test-read-dwarf/PR22122-libftdc.so.abi egrep
'type-id-263|type-id-407|type-id-233'=20
    <typedef-decl name=3D'is_not_reference_tag' type-id=3D'type-id-233'
filepath=3D'src/third_party/boost-1.60.0/boost/optional/optional.hpp' line=
=3D'219'
column=3D'1' id=3D'type-id-234'/>
      <typedef-decl name=3D'false_' type-id=3D'type-id-263'
filepath=3D'src/third_party/boost-1.60.0/boost/mpl/bool_fwd.hpp' line=3D'25'
column=3D'1' id=3D'type-id-233'/>
      <class-decl name=3D'__anonymous_struct__' is-struct=3D'yes'
is-anonymous=3D'yes' naming-typedef-id=3D'type-id-233' visibility=3D'defaul=
t'
is-declaration-only=3D'yes' id=3D'type-id-263'/>
      <typedef-decl name=3D'true_' type-id=3D'type-id-263'
filepath=3D'src/third_party/boost-1.60.0/boost/mpl/bool_fwd.hpp' line=3D'24'
column=3D'1' id=3D'type-id-407'/>
      <class-decl name=3D'__anonymous_struct__' is-struct=3D'yes'
is-anonymous=3D'yes' naming-typedef-id=3D'type-id-407' visibility=3D'defaul=
t'
is-declaration-only=3D'yes' id=3D'type-id-263'/>
      <class-decl name=3D'__anonymous_struct__1' is-struct=3D'yes'
is-anonymous=3D'yes' visibility=3D'default' is-declaration-only=3D'yes'
id=3D'type-id-263'/>

This seems to say:

234 is typedef 233 is_not_reference_tag
233 is typedef 263 false_
263 is a struct named by 233
407 is typedef 263 true_
263 is *also* a struct named by 407
263 is a struct

The Boost header in question contains:

template< bool C_ > struct bool_;

typedef bool_<true> true_;
typedef bool_<false> false_;

--=20
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