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diff --git a/gcc/testsuite/gfortran.dg/isnan_2.f90 b/gcc/testsuite/gfortran.dg/isnan_2.f90
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+! Test for the ISNAN intrinsic on constants
+!
+! { dg-do run }
+! { dg-options "-fno-range-check" }
+! { dg-add-options ieee }
+! { dg-skip-if "NaN not supported" { spu-*-* } { "*" } { "" } }
+!
+ implicit none
+ character(len=1) :: s
+ write(s,'(L1)') isnan(0.)
+ if (s /= 'F') call abort
+
+ write(s,'(L1)') isnan(exp(huge(0.)))
+ if (s /= 'F') call abort
+
+ write(s,'(L1)') isnan(0./0.)
+ if (s /= 'T') call abort
+end