On Mon, Mar 22, 2021 at 10:28:48AM -0400, Vladimir Makarov wrote:
> On 2021-03-22 6:22 a.m., Richard Sandiford wrote:
> >'\0' is just a normal string null terminator and so I don't think we
> >should be processing it as if it were a constraint character.
> >How about having a gcc_unreachable on zer
On Mon, Mar 22, 2021 at 10:22:55AM +, Richard Sandiford wrote:
> Segher Boessenkool writes:
> > On Sat, Mar 20, 2021 at 10:53:32AM -0400, Vladimir Makarov via Gcc-patches
> > wrote:
> >> It seems CONSTRAINT_LEN treats constraint '\0' as one having length 1.
> >
> > Maybe we should fix that?
On 2021-03-22 6:22 a.m., Richard Sandiford wrote:
'\0' is just a normal string null terminator and so I don't think we
should be processing it as if it were a constraint character.
How about having a gcc_unreachable on zero instead?
I would be nice to use gcc_unreachable but it requires to re
Segher Boessenkool writes:
> Hi!
>
> On Sat, Mar 20, 2021 at 10:53:32AM -0400, Vladimir Makarov via Gcc-patches
> wrote:
>> It seems CONSTRAINT_LEN treats constraint '\0' as one having length 1.
>
> Maybe we should fix that? See attached patch.
I don't strongly object, but CONSTRAINT_LEN (0) do
Hi!
On Sat, Mar 20, 2021 at 10:53:32AM -0400, Vladimir Makarov via Gcc-patches
wrote:
> It seems CONSTRAINT_LEN treats constraint '\0' as one having length 1.
Maybe we should fix that? See attached patch.
Segher
diff --git a/gcc/genpreds.c b/gcc/genpreds.c
index 8499a2a2383b..b83a030d6a5d 1
The following patch fixes
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99680
The patch was successfully bootstrapped on x86-64.
commit c1ab0c0336d85f5e97739060ecf77fd05ac86d2a
Author: Vladimir N. Makarov
Date: Sat Mar 20 10:50:03 2021 -0400
[PR99680] Check empty constraint before using
