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From: "dave.anglin at bell dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/107815] 20_util/to_chars/float128_c++23.cc FAILs
Date: Mon, 28 Nov 2022 13:04:15 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107815

--- Comment #19 from dave.anglin at bell dot net ---
On 2022-11-28 4:39 a.m., jakub at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107815
>
> --- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> Or better yet
> #include <stdlib.h>
> #include <stdio.h>
>
> int
> main ()
> {
>    char *end;
>    const char *p =3D "6e-4966";
>    long double l =3D strtold (p, &end);
>    if (l !=3D __LDBL_DENORM_MIN__ || end !=3D p + 7)
>      printf ("%Le %s\n", l, end);
>    p =3D "1e-4965";
>    l =3D strtold (p, &end);
>    if (l !=3D 2.0L * __LDBL_DENORM_MIN__ || end !=3D p + 7)
>      printf ("%Le %s\n", l, end);
>    p =3D "2e-4965";
>    l =3D strtold (p, &end);
>    if (l !=3D 3.0L * __LDBL_DENORM_MIN__ || end !=3D p + 7)
>      printf ("%Le %s\n", l, end);
>    return 0;
> }
> so that we know if it is just the denorm_min() case or also other denorma=
ls.
I tried both test cases with a recent build of gcc-12. Neither failed at O0=
 or
O2. Nothing was printed.=