[PATCH] fortran: fix handling of options -ffpe-trap and -ffpe-summary [PR110957]

[Harald Anlauf]

Dear all,

the attached simple patch fixes a mixup of error messages for -ffpe-trap
and -ffpe-summary.  While at it, I though it might be useful to accept
'none' as allowable argument to -ffpe-trap, so that traps previously set
on the command line may be cleared.  This change is also documented.

Regtested on x86_64-pc-linux-gnu.  OK for mainline?

***

The reporter also suggested to detect and handle -fno-trapping-math
when any trap is enabled.

I am not so sure that this can be required.  In gfortran, specifying
-ffpe-trap sets the FPU mask in the main and has no further effect.
Or am I missing something?

Any further opinions or insights?

Thanks,
Harald

-------------- next part --------------
A non-text attachment was scrubbed...
Name: pr110957.diff
Type: text/x-patch
Size: 2971 bytes
Desc: not available
URL: <https://gcc.gnu.org/pipermail/fortran/attachments/20231006/1b24cb42/attachment.bin>