[OpenIndiana-discuss] GCC 5.4 added to the repository

[Thomas Wagner]

Hi Aurelien,

it would be very cool if someone could send me / the list the output
of "elfdump -d" on a compiled binary with C++ code. If that is not
available, then regular C-code is okay too. e.g. gcc -o hello hello.c
I have no test system at hand (have only older hipster on disk).

What I would appreciated to see would be a configuration that has
"[ LAZY ]"-load removed (only) for gcc runtime libs.

Excample "good":

...
 [2] somelib.so
 [3] libgcc_s.so
...
 [5] someotherlib.so
 [6] libstdc++.so


Excample "bad":

...
 [2] somelib.so
 [3] [ LAZY ]          <- delayed load/binding, libc.so can bind funcs earlier then libgcc_s.so
 [4] libgcc_s.so
...
 [5] someotherlib.so
 [6] [ LAZY ]          <- delayed load/binding, libc.so can bind funcs earlier then libstdc++.so
 [7] libstdc++.so

This removed "LAZY"-load avoids situation where uncatched C++ exceptions
are falling through into into library /usr/lib/libc.so which normally can't
handle them, so binary core dumps.
Prominent example is "filezilla".

In SFEgcc we set "-zinterpose" to have the resulting binaries link (only) the
gcc runtime without the LAZY flag.


Thanks much!
Thomas


On Tue, Sep 06, 2016 at 03:34:21PM +0200, Aur??lien Larcher wrote:
> Hello,
> I wrote a short post about it:
> 
> https://www.openindiana.org/2016/09/06/gcc-5-4-now-available-as-testing-compiler/
> 
> Thanks go to Rich Lowe for his fixes to the linker and to Alexander
> for patches and thorough testing.
> 
> Please comment if you think about additional information which should
> be provided.
> Best regards,
> 
> Aurelien
> 
> -- 
> ---
> Praise the Caffeine embeddings
> 
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> openindiana-discuss at openindiana.org
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> 

-- 
-- 
Thomas Wagner

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