inline-asm/6481: ICE in instantiate_virtual_regs_1 when passing structs as inline asm arguments to registers

[Dara Hazeghi]

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit- 
trail&database=gcc&pr=6481

Hello,

compiling the testcase in this report results in an ICE on 3.2.3 and  
earlier. On 3.3 branch and mainline (20030509), I get:

bug.c: In function `foofunc':
bug.c:4: error: impossible constraint in `asm'

Is this the proper behavior (if it is, this bug should be recategorized  
ICE-on-illegal)?

Thanks,

Dara