[Bug c/90658] [7/8/9 Regression] ICE in default_conversion, at c/c-typeck.c:2159

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90658

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2019-05-28
                 CC|                            |mpolacek at gcc dot gnu.org,
                   |                            |msebor at gcc dot gnu.org
      Known to work|                            |4.9.4
            Summary|ICE in default_conversion,  |[7/8/9 Regression] ICE in
                   |at c/c-typeck.c:2159        |default_conversion, at
                   |                            |c/c-typeck.c:2159
     Ever confirmed|0                           |1
      Known to fail|                            |10.0, 5.1.0, 6.4.0, 7.3.0,
                   |                            |8.2.0, 9.1.0

--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed.  Bisection points to r210262:

        PR c/50459
c-family/
        * c-common.c (check_user_alignment): Return -1 if alignment is error
        node.
        (handle_aligned_attribute): Don't call default_conversion on
        FUNCTION_DECLs.
        (handle_vector_size_attribute): Likewise.
        (handle_tm_wrap_attribute): Handle case when wrap_decl is error node.
        (handle_sentinel_attribute): Call default_conversion and allow even
        integral types as an argument.
c/
        * c-parser.c (c_parser_attributes): Parse the arguments as an
        expression-list if the attribute takes identifier.
testsuite/
        * c-c++-common/attributes-1.c: Move test line to a new test.
        * c-c++-common/attributes-2.c: New test.
        * c-c++-common/pr50459.c: New test.
        * c-c++-common/pr59280.c: Add "undeclared" to dg-error.
        * gcc.dg/nonnull-2.c: Likewise.
        * gcc.dg/pr55570.c: Modify dg-error.
        * gcc.dg/tm/wrap-2.c: Likewise.

Prior to that GCC rejected the test case with:

error: constructor priorities must be integers from 0 to 65535 inclusive
 void g () __attribute__ ((constructor(f)));
 ^