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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug debug/60339] gnat weird DW_AT_abstract_origin
Date: Tue, 25 Feb 2014 23:52:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60339

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |ebotcazou at gcc dot gnu.org
         Resolution|---                         |WORKSFORME

--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---

> concrete instance tree (Out-of-Line Instance):
>  <1><47562>: Abbrev Number: 62 (DW_TAG_subprogram)
>     <47563>   DW_AT_abstract_origin: <0x46678>
>     <47567>   DW_AT_low_pc      : 0x4517e0
>     <4756f>   DW_AT_high_pc     : 0x261
> 
> abstract instance tree:
>  <1><46678>: Abbrev Number: 48 (DW_TAG_subprogram)
>     <46679>   DW_AT_name        : atree__copy_separate_tree
>     <46684>   DW_AT_inline      : 1     (inlined)
>  <2><46689>: Abbrev Number: 112 (DW_TAG_subprogram)
>     <4668a>   DW_AT_name        : atree__copy_separate_tree__copy_entity
>     <46695>   DW_AT_low_pc      : 0x450ca0
>     <4669d>   DW_AT_high_pc     : 0x3c9
>  - why are specific PCs in _abstract_ instance tree?

This is a non-inlined subroutine nested in an inlined subroutine, see 3.3.8.4.

>  - BTW the tree has 301 DIEs, that seems too large for an abstract instance
> tree

!!???

> BTW master (4.9 - r208124) failed on GNAT internal error during bootstrap.

Please open a separate PR for this.