Re: [gnuplot:bugs] #2195 html fails to compile on mipsel platform

[Anton Gladky <gladk@debian.org>]

Hello Aurelien,

thanks for the note. It really helped!

@Ethan, could you please close the issue in gnuplot-tracker? It should
be fixed in GCC.

Regards

Anton

Am Sa., 14. Sept. 2019 um 18:38 Uhr schrieb Aurelien Jarno
<aurelien@aurel32.net>:

>
> On 2019-09-03 21:59, Anton Gladky wrote:
> > Dear mips porters,
> >
> > I am maintaining the gnuplot in the Debian and there is a segfault on the
> > mipsel, what I reported to upstream [1].
> >
> > There is a question from the gnuplot author, which I am not able to response.
> > Could you please have a look?
> >
> > It segfaults somewhere in the static global structure. And the problem appeared
> > recently, maybe due to the GCC-9 migration. There were not problems with GCC-8.
> > Some regressions?
>
> I confirm it's a regression due introduced by GCC 9. I have reported the
> bug upstream: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91769
>
>
> Until this bug is fixed, you can use the following workaround:
>
> --- gnuplot-5.2.6+dfsg1.orig/src/axis.c
> +++ gnuplot-5.2.6+dfsg1/src/axis.c
> @@ -2698,6 +2698,9 @@ map_y(double value)
>   * If update is TRUE then check and update rrange autoscaling
>   */
>  coord_type
> +#ifdef __mips
> +__attribute__((optimize("-O1")))
> +#endif
>  polar_to_xy( double theta, double r, double *x, double *y, TBOOLEAN update)
>  {
>      coord_type status = INRANGE;
>
> --
> Aurelien Jarno                          GPG: 4096R/1DDD8C9B
> aurelien@aurel32.net                 http://www.aurel32.net
>
> --
> Aurelien Jarno                          GPG: 4096R/1DDD8C9B
> aurelien@aurel32.net                 http://www.aurel32.net