1 files changed, 99 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/nan_6.f90 b/gcc/testsuite/gfortran.dg/nan_6.f90
new file mode 100644
index 000000000..8f0af2944
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/nan_6.f90
@@ -0,0 +1,99 @@
+! { dg-do run }
+! { dg-add-options ieee }
+! { dg-skip-if "NaN not supported" { spu-*-* } { "*" } { "" } }
+!
+! List-directed part of PR fortran/43298
+! and follow up to PR fortran/34319.
+!
+! Check handling of "NAN(alphanum)"
+!
+character(len=200) :: str
+real :: r
+complex :: z
+
+! read_real:
+
+r = 1.0
+str = 'INfinity' ; read(str,*) r
+if (r < 0 .or. r /= r*1.1) call abort()
+
+r = 1.0
+str = '-INF' ; read(str,*) r
+if (r > 0 .or. r /= r*1.1) call abort()
+
+r = 1.0
+str = '+INF' ; read(str,*) r
+if (r < 0 .or. r /= r*1.1) call abort()
+
+r = 1.0
+str = '-inFiniTY' ; read(str,*) r
+if (r > 0 .or. r /= r*1.1) call abort()
+
+r = 1.0
+str = 'NAN' ; read(str,*) r
+if (.not. isnan(r)) call abort()
+
+r = 1.0
+str = '-NAN' ; read(str,*) r
+if (.not. isnan(r)) call abort()
+
+r = 1.0
+str = '+NAN' ; read(str,*) r
+if (.not. isnan(r)) call abort()
+
+r = 1.0
+str = 'NAN(0x111)' ; read(str,*) r
+if (.not. isnan(r)) call abort()
+
+r = 1.0
+str = '-NAN(123)' ; read(str,*) r
+if (.not. isnan(r)) call abort()
+
+r = 1.0
+str = '+NAN(0xFFE)' ; read(str,*) r
+if (.not. isnan(r)) call abort()
+
+
+! parse_real
+
+z = cmplx(-2.0,-4.0)
+str = '(0.0,INfinity)' ; read(str,*) z
+if (aimag(z) < 0 .or. aimag(z) /= aimag(z)*1.1) call abort()
+
+z = cmplx(-2.0,-4.0)
+str = '(-INF,0.0)' ; read(str,*) z
+if (real(z) > 0 .or. real(z) /= real(z)*1.1) call abort()
+
+z = cmplx(-2.0,-4.0)
+str = '(0.0,+INF)' ; read(str,*) z
+if (aimag(z) < 0 .or. aimag(z) /= aimag(z)*1.1) call abort()
+
+z = cmplx(-2.0,-4.0)
+str = '(-inFiniTY,0.0)' ; read(str,*) z
+if (real(z) > 0 .or. real(z) /= real(z)*1.1) call abort()
+
+z = cmplx(-2.0,-4.0)
+str = '(NAN,0.0)' ; read(str,*) z
+if (.not. isnan(real(z))) call abort()
+
+z = cmplx(-2.0,-4.0)
+str = '(0.0,-NAN)' ; read(str,*) z
+if (.not. isnan(aimag(z))) call abort()
+
+z = cmplx(-2.0,-4.0)
+str = '(+NAN,0.0)' ; read(str,*) z
+if (.not. isnan(real(z))) call abort()
+
+z = cmplx(-2.0,-4.0)
+str = '(NAN(0x111),0.0)' ; read(str,*) z
+if (.not. isnan(real(z))) call abort()
+
+z = cmplx(-2.0,-4.0)
+str = '(0.0,-NaN(123))' ; read(str,*) z
+if (.not. isnan(aimag(z))) call abort()
+
+z = cmplx(-2.0,-4.0)
+str = '(+nan(0xFFE),0.0)' ; read(str,*) z
+if (.not. isnan(real(z))) call abort()
+
+end