gcc-4.9/gcc/testsuite/gcc.target/arm/fp16-compile-none-1.c


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/* { dg-do compile } */
/* { dg-options "-mfp16-format=none" } */

/* __fp16 type name is not recognized unless you explicitly enable it
   by selecting -mfp16-format=ieee or -mfp16-format=alternative.  */
__fp16 xx = 0.0;  /* { dg-error "unknown type name" } */