RE: [PATCH 1/6] DWARF: Don't add nameless modules to partial symbol table.

Wiederhake, Tim
2017-08-01T12:47:59Z

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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