From: Jerry DeLisle <jvdelisle@charter.net>
To: Tobias Burnus <burnus@net-b.de>,
gcc-patches <gcc-patches@gcc.gnu.org>,
fortran <fortran@gcc.gnu.org>, Harald Anlauf <anlauf@gmx.de>
Subject: Re: [Patch] Fortran: Fix 'name' bound size [PR99688]
Date: Sun, 21 Mar 2021 17:25:56 -0700 [thread overview]
Message-ID: <9879f6b4-4235-38a0-b74e-e1111dc6b82d@charter.net> (raw)
In-Reply-To: <a0b37568-f8fa-bee7-6489-1e171d95a942@net-b.de>
Hi Tobias and others,
Reembering some of my own history, we always have used a +1 on
'LENGTH_MAX' items to allow the C null termination on strings or buffers
for obvious reasons.
Certainly OK for trunk and backports.
Regards,
Jerry
On 3/21/21 9:08 AM, Tobias Burnus wrote:
> The gfc_match_select_rank issue showed up in the testsuite
> and was found by Martin's asan-bootstrapped GCC. First
> analysis by Harald – thanks to both!
>
> However, I think the other variables I fixed were also
> prone to overflows; see below for its usage.
>
> OK for mainline? Other branches?
>
> Tobias
>
> PS: Other pending Fortran patches – please review!
> [Patch] Fortran: Fix intrinsic null() handling [PR99651]
> [Patch] Fortran: Fix func decl mismatch [PR93660]
>
> PPS: Usage of 'name' in the patched functions:
>
> resolve_select_type (gfc_code *code, gfc_namespace *old_ns)
> char name[GFC_MAX_SYMBOL_LEN];
> ...
> sprintf (name, "__tmp_class_%s", c->ts.u.derived->name);
>
>
> select_intrinsic_set_tmp (gfc_typespec *ts)
> {
> char name[GFC_MAX_SYMBOL_LEN];
> ...
> sprintf (name, "__tmp_class_%s", ts->u.derived->name);
>
>
> gfc_match_select_type (void)
> ...
> char name[GFC_MAX_SYMBOL_LEN];
> ...
> m = gfc_match (" %n => %e", name, &expr2);
>
> gfc_match_select_rank (void)
> ...
> char name[GFC_MAX_SYMBOL_LEN];
> ...
> m = gfc_match (" %n => %e", name, &expr2);
>
prev parent reply other threads:[~2021-03-22 0:25 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-21 16:08 Tobias Burnus
2021-03-22 0:25 ` Jerry DeLisle [this message]
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