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/* { dg-do compile } */
/* Verify output operands. */
int
test (void)
{
int x;
register int y __asm__ ("0");
/* Preserve status quo and don't error out. */
__asm__ ("" : "=r" (x), "=r" (x));
/* Be more strict for hard register constraints and error out. */
__asm__ ("" : "={0}" (x), "={1}" (x)); /* { dg-error "multiple outputs to lvalue 'x'" } */
/* Still error out in case of a mixture. */
__asm__ ("" : "=r" (x), "={1}" (x)); /* { dg-error "multiple outputs to lvalue 'x'" } */
return x + y;
}
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