[Bug ipa/94656] target_clones on alias leads to segfault in the compiler

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94656

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2020-04-20

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 10 now rejects this:

> ./cc1 -quiet x.c
x.c:6:52: error: clones for ‘target_clones’ attribute cannot be created
    6 | __attribute__((target_clones("default,avx"))) void f2()
__attribute__((alias("f1")));
      |                                                    ^~
x.c:6:52: note: ‘target_clones’ cannot be combined with ‘alias’ attribute

so likely a duplicate bug and a backport is missing.