Add new NAG bug test case

Author: nncarlson

nag-bugs/CMakeLists.txt

@@ -5,6 +5,7 @@ include(testing)
 
 project(nag-bug Fortran)
 
+add_compiler_test(SOURCES nag-20190906.f90 RUN_ONLY LABELS SR104066)
 add_compiler_test(SOURCES nag-20190831.f90 RUN_ONLY LABELS SR104066)
 add_compiler_test(SOURCES nag-20190826a.f90 COMPILE_ONLY LABELS SR104042)
 add_compiler_test(SOURCES nag-20190826b.f90 COMPILE_ONLY LABELS SR104042)

nag-bugs/nag-20190906.f90

@@ -0,0 +1,22 @@
+!! SR104042:
+!!
+!! WRONG RESULT FROM NORM2 WITH REAL64 ARRAY SECTION ARGUMENT
+!!
+!! This is an alteration of nag-20190831.f90 which still fails after the
+!! fix in build 6238 for the latter test case.
+!!
+!! The following example norm2 should return sqrt(91) but instead returns
+!! sqrt(30) for a real64 array, but the correct result for real32.
+!!
+!! $ nagfor nag-20190906.f90 
+!! NAG Fortran Compiler Release 6.2(Chiyoda) Build 6238
+!! [NAG Fortran Compiler normal termination]
+!! $ ./a.out
+!! STOP: 1
+!!
+
+double precision x(0:3,0:4)
+x = 0
+x(1:2,1:3) = reshape([1,2,3,4,5,6], shape=[2,3])
+if (norm2(x(1:2,1:3)) /= sqrt(91.0d0)) stop 1  ! WRONG NORM2 RESULT
+end