https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64104
--- Comment #3 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> --- According to F08/0104 interp/erratum (http://j3-fortran.org/doc/year/14/14-192.txt): Allowed in constant expressions: "(8) a reference to a transformational function from the intrinsic module IEEE_ARITHMETIC or IEEE_EXCEPTIONS (14), where each argument is a constant expression," which means: IEEE_SELECTED_REAL_KIND IEEE_SUPPORT_ROUNDING IEEE_SUPPORT_FLAG IEEE_SUPPORT_HALTING Allowed in specification expressions: "(nn) a reference to a transformational function from the intrinsic module IEEE_ARITHMETIC or IEEE_EXCEPTIONS (14) or the intrinsic module ISO_C_BINDING (15.2), where each argument is a restricted expression," which means: IEEE_SELECTED_REAL_KIND IEEE_SUPPORT_ROUNDING IEEE_SUPPORT_FLAG IEEE_SUPPORT_HALTING and: "(9) a specification inquiry, i.e. [...] (3) an inquiry function from the intrinsic modules IEEE_ARITHMETIC and IEEE_EXCEPTIONS" which means: IEEE SUPPORT DATATYPE IEEE SUPPORT DENORMAL IEEE SUPPORT DIVIDE IEEE SUPPORT INF IEEE SUPPORT IO IEEE SUPPORT NAN IEEE SUPPORT SQRT IEEE SUPPORT STANDARD IEEE SUPPORT UNDERFLOW CONTROL
