c/3711: va_arg + var size struct + typeof crash gcc 3.1

[rodrigc@gcc.gnu.org]

Synopsis: va_arg + var size struct + typeof crash gcc 3.1

State-Changed-From-To: open->analyzed
State-Changed-By: rodrigc
State-Changed-When: Sat Dec 15 09:02:41 2001
State-Changed-Why:
    With gcc 3.1 20011207, I get the following ICE 
    your code example:
    
    x.c: In function `functionWithArgs':
    x.c:24: Internal compiler error in instantiate_virtual_regs_1, at function.c:3873
    Please submit a full bug report,
    with preprocessed source if appropriate.
    See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
    
    Problem goes away if I make the char x[] a fixed instead
    of variable size.
    
    Problem does not occur in gcc 3.0.3

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=3711