On 11/25/21 12:57 AM, Richard Biener wrote:
On Wed, 24 Nov 2021, Martin Sebor wrote:
On 11/24/21 8:21 AM, Richard Biener via Gcc-patches wrote:
This resurrects -Wunreachable-code and implements a warning for
trivially unreachable code as of CFG construction. Most problematic
with this is the
On Thu, 25 Nov 2021, Michael Matz wrote:
> Hello,
>
> On Thu, 25 Nov 2021, Richard Biener wrote:
>
> > > Yes, that's definitely the case - I was too lazy to re-use the old
> > > option name here. But I don't have a good name at hand, maybe clang
> > > has an option covering the cases I'm thinki
Hello,
On Thu, 25 Nov 2021, Richard Biener wrote:
> > Yes, that's definitely the case - I was too lazy to re-use the old
> > option name here. But I don't have a good name at hand, maybe clang
> > has an option covering the cases I'm thinking about.
As you asked: I already have difficulties to
On Thu, 25 Nov 2021, Richard Biener wrote:
> On Wed, 24 Nov 2021, Jason Merrill wrote:
>
> > On 11/24/21 11:15, Marek Polacek wrote:
> > > On Wed, Nov 24, 2021 at 04:21:31PM +0100, Richard Biener via Gcc-patches
> > > wrote:
> > >> This resurrects -Wunreachable-code and implements a warning for
>
On Thu, 25 Nov 2021, Richard Biener wrote:
> On Wed, 24 Nov 2021, Michael Matz wrote:
>
> > Hello,
> >
> > On Wed, 24 Nov 2021, Richard Biener wrote:
> >
> > > >> +/* Unreachable code in if (0) block. */
> > > >> +void baz(int *p)
> > > >> +{
> > > >> + if (0)
> > > >> + {
> > > >> +
On Wed, 24 Nov 2021, Michael Matz wrote:
> Hello,
>
> On Wed, 24 Nov 2021, Richard Biener wrote:
>
> > >> +/* Unreachable code in if (0) block. */
> > >> +void baz(int *p)
> > >> +{
> > >> + if (0)
> > >> + {
> > >> +return; /* { dg-bogus "not reachable" } */
> > >
> > >Hmm? Why
On Wed, 24 Nov 2021, Martin Sebor wrote:
> On 11/24/21 8:21 AM, Richard Biener via Gcc-patches wrote:
> > This resurrects -Wunreachable-code and implements a warning for
> > trivially unreachable code as of CFG construction. Most problematic
> > with this is the C/C++ frontend added 'return 0;' s
On Wed, 24 Nov 2021, Jason Merrill wrote:
> On 11/24/21 11:15, Marek Polacek wrote:
> > On Wed, Nov 24, 2021 at 04:21:31PM +0100, Richard Biener via Gcc-patches
> > wrote:
> >> This resurrects -Wunreachable-code and implements a warning for
> >> trivially unreachable code as of CFG construction.
On 11/24/21 11:15, Marek Polacek wrote:
On Wed, Nov 24, 2021 at 04:21:31PM +0100, Richard Biener via Gcc-patches wrote:
This resurrects -Wunreachable-code and implements a warning for
trivially unreachable code as of CFG construction. Most problematic
with this is the C/C++ frontend added 'retu
On Wed, Nov 24, 2021 at 10:22 AM Richard Biener via Gcc-patches
wrote:
>
> This resurrects -Wunreachable-code and implements a warning for
> trivially unreachable code as of CFG construction. Most problematic
> with this is the C/C++ frontend added 'return 0;' stmt in main
> which the patch handl
On 11/24/21 8:21 AM, Richard Biener via Gcc-patches wrote:
This resurrects -Wunreachable-code and implements a warning for
trivially unreachable code as of CFG construction. Most problematic
with this is the C/C++ frontend added 'return 0;' stmt in main
which the patch handles for C++ like the C
Hello,
On Wed, 24 Nov 2021, Richard Biener wrote:
> >> +/* Unreachable code in if (0) block. */
> >> +void baz(int *p)
> >> +{
> >> + if (0)
> >> + {
> >> +return; /* { dg-bogus "not reachable" } */
> >
> >Hmm? Why are you explicitely saying that warning here would be bogus?
>
On Wed, Nov 24, 2021 at 04:21:31PM +0100, Richard Biener via Gcc-patches wrote:
> This resurrects -Wunreachable-code and implements a warning for
> trivially unreachable code as of CFG construction. Most problematic
> with this is the C/C++ frontend added 'return 0;' stmt in main
> which the patch
On November 24, 2021 4:43:45 PM GMT+01:00, Michael Matz wrote:
>Hello,
>
>> +/* Unreachable code in if (0) block. */
>> +void baz(int *p)
>> +{
>> + if (0)
>> + {
>> +return; /* { dg-bogus "not reachable" } */
>
>Hmm? Why are you explicitely saying that warning here would be bogus
Hello,
> +/* Unreachable code in if (0) block. */
> +void baz(int *p)
> +{
> + if (0)
> + {
> +return; /* { dg-bogus "not reachable" } */
Hmm? Why are you explicitely saying that warning here would be bogus? It
quite clearly _is_ unreachable, so warning there makes sense. Mayb
This resurrects -Wunreachable-code and implements a warning for
trivially unreachable code as of CFG construction. Most problematic
with this is the C/C++ frontend added 'return 0;' stmt in main
which the patch handles for C++ like the C frontend already does
by using BUILTINS_LOCATION.
Another p
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