[Bug c++/11971] [3.4 regression] ICE in cp_expr_size with variadic function call

["janis187 at us dot ibm dot com" <gcc-bugzilla at gcc dot gnu dot org>]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11971


janis187 at us dot ibm dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jason at redhat dot com


------- Additional Comments From janis187 at us dot ibm dot com  2003-08-29 20:08 -------
The regression in PR 11971 was introduced or exposed by this patch:

--- gcc/gcc/ChangeLog ---

2003-01-02  Jason Merrill  <jason@redhat.com>

        * fold-const.c (fold) [COND_EXPR]: Avoid NOP_EXPRs better.

        * integrate.c (copy_decl_for_inlining): Don't clear the rtl for
        static/external decls.

--- gcc/gcc/cp/ChangeLog ---

2003-01-02  Jason Merrill  <jason@redhat.com>

        * call.c (build_conditional_expr): Stabilize lvalues properly.
        * cvt.c (ocp_convert): Don't build NOP_EXPRs of class type.
        * tree.c (lvalue_p_1): Don't allow sloppy NOP_EXPRs as lvalues.
        Don't allow CALL_EXPR or VA_ARG_EXPR, either.

        * call.c (convert_like_real): Call decl_constant_value for an
        IDENTITY_CONV even if there are no more conversions.

        [also cvt.c, decl2.c, dump.c, except.c, init.c, tree.c]

The regression hunt took place on i686-pc-linux-gnu using the submitter's
test case.  Before this patch the test case got these additional
warnings rather than the ICE:

11971.C: In function `int main()':
11971.C:22: warning: cannot pass objects of non-POD type `class A' through
   `...'; call will abort at runtime
11971.C:22: warning: cannot pass objects of non-POD type `class A' through
   `...'; call will abort at runtime