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Re: GCC stack backtraces


On Wed, Aug 29, 2012 at 02:47:18AM -0500, Gabriel Dos Reis wrote:
> On Wed, Aug 29, 2012 at 2:22 AM, Ian Lance Taylor <iant@google.com> wrote:
> 
> > Does this seem like something we could usefully add to GCC?
> 
> Emphatically, yes!.


I also think it would be very useful.

BTW, MELT has also such a feature (which proved extremely useful in daily use, 
so I am sure that if something existed in GCC it would help a lot many GCC developers), 
but it is simpler because MELT call frames are 
explicit (linked) C struct-s (generated by the MELT translator), and there is
some location slot inside them. So MELT can output backtraces like e.g.


SHORT BACKTRACE[#0] warmelt-first.melt:2809: MELT CHECK: meltmod__warmelt_first__initialmeltchunk_39 {putroutconst constnull.drout_3199__INITVALUE_EXPORTER#0};
#1:_ warmelt-first.melt:2801:/ initchunk

#2:_ melt-runtime.c:9000:: meltgc_start_module_by_index before starting #1 /usr/src/Lang/basile-melt-gcc/gcc/melt/generated/warmelt-first

#3:_ melt-runtime.c:9038:: meltgc_start_all_new_modules before starting #1 module /usr/src/Lang/_Obj_Melt_Basile/gcc/meltbuild-stage0-dynamic/warmelt-first.meltmod-675464a27b5d1fd9709f280cd71315ef.dynami

#4:_ melt-runtime.c:9675:: meltgc_load_modules_and_do_mode before loading curmod meltbuild-stage0-dynamic/warmelt-modes.dynamic


Cheers.
-- 
Basile STARYNKEVITCH         http://starynkevitch.net/Basile/
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