1 // RUN: %clang_cc1 %s -triple armv7-apple-darwin -verify -fsyntax-only 2 3 void f (void) { 4 int Val; 5 asm volatile ("lw (r1), %0[val]": "=&b"(Val)); // expected-error {{invalid output constraint '=&b' in asm}} 6 return; 7 } 8