[PATCH] PR fortran/66942 -- avoid referencing a NULL C++ thing

[Richard Biener]

On Tue, Jul 28, 2015 at 3:19 PM, Steve Kargl
<sgk@troutmask.apl.washington.edu> wrote:
> On Tue, Jul 28, 2015 at 03:04:52PM +0200, Mikael Morin wrote:
>> Le 21/07/2015 21:08, Steve Kargl a ?crit :
>> > When C++ was injected into trans-expr.c in the form of vec,
>> > it seems whomever did the conversion to vec forgot to check
>> > for a NULL C++ thing.  This patch seems to avoid the problem,
>> > but having zero knowledge of C++ I could be wrong.
>> >
>> > OK for trunk?
>> >
>> > 2015-07-21  Steven G. Kargl  <kargl@gcc.gnu.org>
>> >
>> >     PR fortran/66942
>> >     * trans-expr.c (gfc_conv_procedure_call): Avoid dereferencing NULL
>> >     C++ thing.
>> >
>> Hello Steve,
>>
>> I believe the vec API should have all that is necessary to handle this
>> automatically.
>> Did you try using vec_safe_splice?

That handles NULL retargs, not NULL or empty arglist.

>
> I know zero about vec and I know zero about C++.

The patch looks ok to me.

Richard.

> --
> Steve