1 files changed, 58 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gfortran.dg/merge_init_expr_2.f90 b/gcc-4.9/gcc/testsuite/gfortran.dg/merge_init_expr_2.f90
new file mode 100644
index 000000000..9b20310ca
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gfortran.dg/merge_init_expr_2.f90
@@ -0,0 +1,58 @@
+! { dg-do compile }
+! { dg-options "-fdump-tree-original" }
+!
+! PR fortran/56649
+! MERGE was not properly compile-time simplified
+!
+! Contributed by Bill Long
+!
+module m
+  implicit none
+
+  integer, parameter :: int32 = 4
+  type MPI_Datatype
+    integer :: i
+  end type MPI_Datatype
+
+  integer,private,parameter :: dik = kind(0)
+  type(MPI_Datatype),parameter,private :: MPIx_I4 = MPI_Datatype( 1275069467)
+  type(MPI_Datatype),parameter,private :: MPIx_I8 = MPI_Datatype( 1275070491)
+  type(MPI_Datatype),parameter :: MPI_INTEGER = merge(MPIx_I4, MPIx_I8, &
+                                                      dik==int32)
+contains
+  subroutine foo
+    integer :: check1
+    check1 = MPI_INTEGER%i
+  end subroutine foo
+end module m
+
+module m2
+  implicit none
+  integer, parameter :: int32 = 4
+  type MPI_Datatype
+    integer :: i
+  end type MPI_Datatype
+
+  integer,private,parameter :: dik = kind(0)
+  type(MPI_Datatype),parameter,private :: MPIx_I4 = MPI_Datatype( 1275069467)
+  type(MPI_Datatype),parameter,private :: MPIx_I8 = MPI_Datatype( 1275070491)
+  type(MPI_Datatype),parameter :: MPI_INTEGER(1) = merge([MPIx_I4], [MPIx_I8], &
+                                                      [dik==int32])
+contains
+  subroutine foo
+    logical :: check2
+    check2 = MPI_INTEGER(1)%i == 1275069467
+  end subroutine foo
+end module m2
+
+
+subroutine test
+  character(len=3) :: one, two, three
+  logical, parameter :: true = .true.
+  three = merge (one, two, true)
+end subroutine test
+
+! { dg-final { scan-tree-dump-times "check1 = 1275069467;" 1 "original" } }
+! { dg-final { scan-tree-dump-times "check2 = 1;" 1 "original" } }
+! { dg-final { scan-tree-dump-times "__builtin_memmove ..void .. &three, .void .. &one, 3.;" 1 "original" } }
+! { dg-final { cleanup-tree-dump "original" } }