gcc-4.9/gcc/testsuite/gcc.dg/asm-6.c


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/* Check error messages for named asm operands.  */
void foo ()
{
  int i;
  __asm__ ("" : [data] "=r" (i) : [data] "i" (100)); /* { dg-error "duplicate asm operand" } */
  __asm__ ("%[foo]" :: [bar] "i" (1)); /* { dg-error "undefined named operand" } */
}