[Bug inline-asm/33600] New: Breakage caused by the fix to PR33552

["segher at kernel dot crashing dot org" <gcc-bugzilla at gcc dot gnu dot org>]

The fix to PR33552 unfortunately breaks the Linux kernel build.
Reduced testcase attached, but hey, I'll put it inline as well:

int f(int n)
{
        int x;

        asm("" : "=&c"(n), "=r"(x) : "1"(n), "0"(n));

        return n;
}

And the error is:
usercopy.i:5: error: 'asm' operand has impossible constraints


-- 
           Summary: Breakage caused by the fix to PR33552
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: inline-asm
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: segher at kernel dot crashing dot org
GCC target triplet: i386-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33600