1 files changed, 54 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gfortran.fortran-torture/execute/where20.f90 b/gcc-4.9/gcc/testsuite/gfortran.fortran-torture/execute/where20.f90
new file mode 100644
index 000000000..b0456500d
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gfortran.fortran-torture/execute/where20.f90
@@ -0,0 +1,54 @@
+! Test the dependency checking in simple where. This
+! did not work and was fixed as part of the patch for
+! pr24519.
+!
+program where_20
+   integer :: a(4)
+   integer :: b(3)
+   integer :: c(3)
+   integer :: d(3) = (/1, 2, 3/)
+   equivalence (a(1), b(1)), (a(2), c(1))
+
+! This classic case worked before the patch.
+   a = (/1, 2, 3, 4/)
+   where (b .gt. 1) a(2:4) = a(1:3)
+   if (any(a .ne. (/1,2,2,3/))) call abort ()
+
+! This is the original manifestation of the problem
+! and is repeated in where_19.f90.
+   a = (/1, 2, 3, 4/)
+   where (b .gt. 1)
+     c = b
+   endwhere
+   if (any(a .ne. (/1,2,2,3/))) call abort ()
+
+! Mask to.destination dependency.
+   a = (/1, 2, 3, 4/)
+   where (b .gt. 1)
+     c = d
+   endwhere
+   if (any(a .ne. (/1,2,2,3/))) call abort ()
+
+! Source to.destination dependency.
+   a = (/1, 2, 3, 4/)
+   where (d .gt. 1)
+     c = b
+   endwhere
+   if (any(a .ne. (/1,2,2,3/))) call abort ()
+
+! Check the simple where.
+   a = (/1, 2, 3, 4/)
+   where (b .gt. 1) c = b
+   if (any(a .ne. (/1,2,2,3/))) call abort ()
+
+! This was OK before the patch.
+   a = (/1, 2, 3, 4/)
+   where (b .gt. 1)
+     where (d .gt. 1)
+       c = b
+     end where
+   endwhere
+   if (any(a .ne. (/1,2,2,3/))) call abort ()
+
+end program
+