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RE: [PATCH 1/6] DWARF: Don't add nameless modules to partial symbol table.
- From: "Wiederhake, Tim" <tim dot wiederhake at intel dot com>
- To: Yao Qi <qiyaoltc at gmail dot com>
- Cc: "gdb-patches at sourceware dot org" <gdb-patches at sourceware dot org>
- Date: Tue, 1 Aug 2017 12:47:44 +0000
- Subject: RE: [PATCH 1/6] DWARF: Don't add nameless modules to partial symbol table.
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- References: <1500629040-12972-1-git-send-email-tim.wiederhake@intel.com> <1500629040-12972-2-git-send-email-tim.wiederhake@intel.com> <20170731220938.GB8039@1170ee0b50d5>
Hi Yao,
Thank you for your response.
I'm using the Intel? Fortran Compiler:
$ ifort --version
ifort (IFORT) 15.0.0 20140716
Copyright (C) 1985-2014 Intel Corporation. All rights reserved.
$ ifort -g -o block-data testsuite/gdb.fortran/block-data.f
$ readelf -w block-data | grep DW_TAG_module
<1><d7>: Abbrev Number: 7 (DW_TAG_module)
7 DW_TAG_module [has children]
Regards,
Tim
> -----Original Message-----
> From: Yao Qi [mailto:qiyaoltc@gmail.com]
> Sent: Tuesday, August 1, 2017 12:10 AM
> To: Wiederhake, Tim <tim.wiederhake@intel.com>
> Cc: gdb-patches@sourceware.org; Bernhard Heckel
> <bernhard.heckel@intel.com>
> Subject: Re: [PATCH 1/6] DWARF: Don't add nameless modules to partial
> symbol table.
>
> On 17-07-21 11:23:55, Tim Wiederhake wrote:
> > From: Bernhard Heckel <bernhard.heckel@intel.com>
> >
> > A name for BLOCK DATA in Fortran is optional. If no name has been
> assigned,
> > GDB will crash during read-in of DWARF when BLOCK DATA is represented
> via
> > DW_TAG_module.
>
> What is your Fortran compiler? I used gfortran 4.9.4, it doesn't generate
> DW_TAG_module in debug information. So, I run block-data.exp with
> unpatched GDB, all tests pass.
>
> >
> > BLOCK DATA is used for one-time initialization of non-pointer variables
> in
> > named common blocks.
> >
> > xxxx-yy-zz Bernhard Heckel <bernhard.heckel@intel.com>
> >
> > gdb/ChangeLog:
> > * dwarf2read.c (add_partial_symbol): Skip nameless modules.
> >
> > gdb/testsuite/ChangeLog:
> > * gdb.fortran/block-data.f: New file.
> > * gdb.fortran/block-data.exp: New file.
> >
>
>
> --
> Yao (齐尧)
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