[Bug middle-end/83487] [8 Regression] ICE in expand_call, at calls.c:4098

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83487

--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
This actually reproduces with C and C++ ABI 12, too.  The problem is this:
4096       /* Stack must be properly aligned now.  */
4097       gcc_assert (!pass
4098                   || !(stack_pointer_delta %
preferred_unit_stack_boundary));

where stack_pointer_delta is 8, but preferred_unit_stack_boundary is 16.

Without __attribute__ ((aligned)) stack_pointer_delta is 16 and the crash does
not occur.  No ideas so far.