This is the mail archive of the
java@gcc.gnu.org
mailing list for the Java project.
Re: [PATCH] Set correct source location for deallocator calls
- From: "H.J. Lu" <hjl dot tools at gmail dot com>
- To: Dehao Chen <dehao at google dot com>
- Cc: Andrew Pinski <pinskia at gmail dot com>, Mark Wielaard <mark at klomp dot org>, Bryce McKinlay <bmckinlay at gmail dot com>, Andrew Haley <aph at redhat dot com>, Richard Henderson <rth at redhat dot com>, Jason Merrill <jason at redhat dot com>, Richard Guenther <richard dot guenther at gmail dot com>, GCC Patches <gcc-patches at gcc dot gnu dot org>, David Li <davidxl at google dot com>, java at gcc dot gnu dot org
- Date: Sat, 15 Sep 2012 11:06:07 -0700
- Subject: Re: [PATCH] Set correct source location for deallocator calls
- References: <CAO2gOZXfnETUe4wqjT7p6fd61hXreu9PDfqKxNz+HxpE0E7K0g@mail.gmail.com> <50243480.7090803@redhat.com> <CAO2gOZURCuWUk2MVwCwmwrijNzWxJt3q=HUpU7=Qv6zB9e-uqA@mail.gmail.com> <50254A50.8070208@redhat.com> <CAO2gOZXhHuFGJ0z=jvkYKZ84EoDaPSYVjxS7QzGore56SyhWyQ@mail.gmail.com> <50255B35.9020705@redhat.com> <CAO2gOZWe+qMrVyvOoo7Ek-di0NKZxxU4Z=pqrDCqqCCAfctZOw@mail.gmail.com> <50258712.4070002@redhat.com> <CAO2gOZUQQjmKtooyXXAfgFoNVbeNwtT+P=E7pQ6jC=e07Nsr2g@mail.gmail.com> <CAO2gOZX-Gn+b6LEzps5zxhgmwQWcJ-zFqG=a7hesW6fbVyxZYQ@mail.gmail.com> <502E6774.8050609@redhat.com> <CAO2gOZWhueDAShNLbNcJpkHA6QqXk1LNZhEMFvfT77aTZTCH9w@mail.gmail.com> <503F7876.7030606@redhat.com> <503F84A9.8010504@redhat.com> <503F95D8.5010506@redhat.com> <CAO2gOZUxD9-Y3O6iS22HNEHUWaH=0Cm97FZ+KHmhkLmCzahVAA@mail.gmail.com> <CALUNu-qXtr3pSTa8j60nD4Y4QK6VNAEOaPh34RRd4qt671gzkA@mail.gmail.com> <CALUNu-p2-rvGCLYn9s1gy-rGOq+cOwZCw9S1Twbjcba0dVKTfQ@mail.gmail.com> <50463661.1020303@redhat.com> <CALUNu-oP9dqG63EHyN18gYj4P3gwrrJcp4Zgrz-pABNxabmsCg@mail.gmail.com> <1346839095.9368.1.camel@springer.wildebeest.org> <CAO2gOZVhW2+VfKU8+n2qrcKr9fgM1G4bRyUTUB_0DATH9eEW6w@mail.gmail.com> <CAMe9rOqpzNa-u7b-nUfeBkpSed5Fkh16tzw4_uyptpMpKfhUfA@mail.gmail.com> <CA+=Sn1=OrqyrGCA-nY1bTpHLc68=q0QGU1t0dsZpA3meLhy0tg@mail.gmail.com> <CAMe9rOpNE0j2eGJDe9PwQg_6JevLVfKCoviVGAwUVCieUMVhFQ@mail.gmail.com> <CAO2gOZUaAjLSmOj-TfSxgVEwxgN349SgePyJaxWhnJqF7iUxuw@mail.gmail.com>
On Sat, Sep 15, 2012 at 9:09 AM, Dehao Chen <dehao@google.com> wrote:
> I tried the up-to-date addr2line on any "gcc -g" generated code, it
> does not work either. This is because in the new dwarf, the
> DW_AT_high_pc now actually means the size. e.g.
>
> <1><9b>: Abbrev Number: 2 (DW_TAG_subprogram)
> <9c> DW_AT_external : 1
> <9c> DW_AT_name : bar
> <a0> DW_AT_decl_file : 1
> <a1> DW_AT_decl_line : 8
> <a2> DW_AT_linkage_name: (indirect string, offset: 0x7b): _Z3barv
> <a6> DW_AT_type : <0x8d>
> <aa> DW_AT_low_pc : 0x400583
> <b2> DW_AT_high_pc : 0x37 0x0
> <ba> DW_AT_frame_base : 1 byte block: 9c (DW_OP_call_frame_cfa)
> <bc> DW_AT_GNU_all_call_sites: 1
> <bc> DW_AT_sibling : <0xff>
>
> However, addr2line still thinks DW_AT_high_pc means "high_pc". I think
> we should wait for binutil to catch up with gcc.
>
So, the meaning of DW_AT_high_pc in DWARF4 is different
from DWARF3?
--
H.J.