[llvm-dev] [cfe-dev] Debuginfo for alias variable /func is not emited.

[Umesh Kalappa via llvm-dev]

Thank you David and Paul.
https://bugs.llvm.org/show_bug.cgi?id=50052

We will work on the patch .

~Umesh

On Tue, Apr 20, 2021 at 11:21 PM <paul.robinson at sony.com> wrote:
>
> > Sure, looks like an omission/bug/missing debug info to me. I don't see
> > any tests in clang for debug info IR emission that include "alias", so
> > Iguess it's not implemented at all. I vaguely thought it was, but
> > probably misremembering.
>
> I can't get newname even with a use, or -fstandalone-debug.
>
> Umesh, if you're willing to generate a patch, that would be wonderful.
> Or if you can't, please file a bug.
> Thanks,
> --paulr
>
> >
> > On Tue, Apr 20, 2021 at 6:48 AM Umesh Kalappa via cfe-dev
> > <cfe-dev at lists.llvm.org> wrote:
> > >
> > > Hi All ,
> > >
> > > We have a stitution with clang ,where the debuginfo for alias variable
> > > /func is not emitted i.e
> > >
> > > $cat test.c
> > > int oldname = 1;
> > > extern int newname __attribute__((alias("oldname")));
> > > $clang -g -O0 test.c
> > > $gdb a.out
> > > (gdb) pt oldname
> > > type = int
> > > (gdb) pt newname
> > > type = <data variable, no debug info>
> > >
> > > and we can fix the same ,by adding the DIGlobalVariable for alias too .
> > >
> > > Before we go-ahead and make the changes ,we would like experts to
> > > confirm these gaps and their comments on the same .
> > >
> > > Thank you
> > > ~Umesh
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