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diff --git a/gcc/testsuite/gfortran.dg/nan_4.f90 b/gcc/testsuite/gfortran.dg/nan_4.f90
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+! { dg-do compile }
+! { dg-options "-std=gnu" }
+! { dg-add-options ieee }
+! { dg-skip-if "NaN not supported" { spu-*-* } { "*" } { "" } }
+!
+! PR fortran/34398.
+!
+! Check for invalid numbers in bit-wise BOZ transfers
+!
+program test
+ implicit none
+ real(4), parameter :: r0 = z'FFFFFFFF' ! { dg-error "Arithmetic NaN" }
+ real(4) r
+ data r/z'FFFFFFFF'/ ! { dg-error "Arithmetic NaN" }
+ r = z'FFFFFFFF' ! { dg-error "Arithmetic NaN" }
+end program test