[Patch] c-format.c/Fortran: Support %wd / host-wide integer in gfc_error (Re: [PATCH] PR fortran/100950 - ICE in output_constructor_regular_field, at varasm.c:5514)

Tobias Burnus tobias@codesourcery.com
Fri Aug 20 11:50:00 GMT 2021

On 20.08.21 11:16, Jakub Jelinek wrote:

> Now, the non-Fortran FE diagnostic code actually has %wd for this (w
> modifier like l modifier), which takes HOST_WIDE_INT/unsigned HOST_WIDE_INT
> argument and prints it.
> So, either you get through the hops to support that, unfortunately it isn't
> just adding support for that in fortran/error.c (error_print) and some
> helper functions, which wouldn't be that hard, just add 'w' next to 'l'
> handling, TYPE_* for that and union member etc., but one needs to modify
> c-family/c-format.c too to register the modifier so that gcc doesn't warn
> about it and knows the proper argument type etc.

That's what the attached patch does.

Build on x86-64 GNU Linux; I tried to build it with -m32 (cf. my
previous email) but as I did not run into the original issue, this does
not proof much.

Comments? OK?


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