[Bug default/28319] New: abidw - regression in treatment of anonymous enums in structs

["gprocida at google dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=28319

            Bug ID: 28319
           Summary: abidw - regression in treatment of anonymous enums in
                    structs
           Product: libabigail
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: default
          Assignee: dodji at redhat dot com
          Reporter: gprocida at google dot com
                CC: libabigail at sourceware dot org
  Target Milestone: ---

This has been seem with kernels like:

https://ci.android.com/builds/submitted/7705975/kernel_abi_aarch64/latest/vmlinux

Current master conflates the anonymous enums in struct net_device and struct
drm_buf.

Comparing old (a test case, so perhaps fairly old) XML and newly-generated XML
gives diffs like:

[...]
                                      in pointed to type 'struct drm_buf' at
drm_legacy.h:50:1:
                                        type size hasn't changed
                                        1 data member changes (2 filtered):
                                          type of '__anonymous_enum__ list'
changed:
                                            type size hasn't changed
                                            6 enumerator deletions:
                                             
'__anonymous_enum__::DRM_LIST_NONE' value '0'
                                             
'__anonymous_enum__::DRM_LIST_FREE' value '1'
                                             
'__anonymous_enum__::DRM_LIST_WAIT' value '2'
                                             
'__anonymous_enum__::DRM_LIST_PEND' value '3'
                                             
'__anonymous_enum__::DRM_LIST_PRIO' value '4'
                                             
'__anonymous_enum__::DRM_LIST_RECLAIM' value '5'
                                            6 enumerator insertions:
                                             
'__anonymous_enum__1::NETREG_UNINITIALIZED' value '0'
                                             
'__anonymous_enum__1::NETREG_REGISTERED' value '1'
                                             
'__anonymous_enum__1::NETREG_UNREGISTERING' value '2'
                                             
'__anonymous_enum__1::NETREG_UNREGISTERED' value '3'
                                             
'__anonymous_enum__1::NETREG_RELEASED' value '4'
                                             
'__anonymous_enum__1::NETREG_DUMMY' value '5'

[...]

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