> ../../../libgfortran/intrinsics/erfc_scaled.c:59:1: error: unknown type name ‘GFC_REAL_16'

I’m really sorry about that, I should have tested on a system without binary128, that would have caught it.
Attached patch committed as rev. 205193 after checking it on system both with and without binary128.

Sorry again,
FX



2013-11-20  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>

	PR libfortran/59227
	* intrinsics/erfc_scaled.c (erfc_scaled_r16): Don't define if
	__float128 is not available.