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Re: Missing debug information for decls in empty blocks

From: James E Wilson <wilson at specifixinc dot com>
To: Nicolas Setton <setton at act-europe dot fr>
Cc: Olivier Hainque <Hainque at act-europe dot fr>, gcc at gcc dot gnu dot org
Date: Fri, 06 Aug 2004 12:56:46 -0700
Subject: Re: Missing debug information for decls in empty blocks
References: <1091718515.17939.265.camel@crolles.act-europe.fr>

Nicolas Setton wrote:

In the context of examining the state of debug information generation with GCC
3.4 and GCC 3.5, we found that nothing is generated for "foo" and "my_struct"
in a construct like:

I'd call it a bug.

We have new options -fno-eliminate-unused-debug-types and -fno-eliminate-unused-debug-symbols. The default is to not emit type/symbol info for unused types and symbols, and these options can be used to turn this off. However, this makes no difference for this testcase with gcc-3.5. I would expect to get debug info with the options, and without the options, it may or may not be there.

Using dwarf2 debug output, I get no info for the type my_struct and the symbol foo. Using stabs debug output, I get no info for the symbol foo, but I do get info for the type my_struct. -- Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com

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