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authorTobias Burnus <burnus@net-b.de>2018-10-18 21:35:34 +0200
committerTobias Burnus <burnus@gcc.gnu.org>2018-10-18 21:35:34 +0200
commitd0477233215e37dea91b1a98e58074257d7fbb5b (patch)
treebe3c7d345234f820644bfca1ce75a9c27156a169 /gcc
parenta9a2fddbf2a93b8427478954d4efe9e02080454f (diff)
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Fix (re)alloc of polymorphic arrays
PR fortran/87625 * trans-array.c (gfc_is_reallocatable_lhs): Detect allocatable polymorphic arrays. PR fortran/87625 * gfortran.dg/realloc_on_assign_31.f90: New file. From-SVN: r265283
Diffstat (limited to 'gcc')
-rw-r--r--gcc/fortran/ChangeLog6
-rw-r--r--gcc/fortran/trans-array.c12
-rw-r--r--gcc/testsuite/ChangeLog5
-rw-r--r--gcc/testsuite/gfortran.dg/realloc_on_assign_31.f9031
4 files changed, 51 insertions, 3 deletions
diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index 13e3581..9ad52ca 100644
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,9 @@
+2018-10-18 Tobias Burnus <burnus@net-b.de>
+
+ PR fortran/87625
+ * trans-array.c (gfc_is_reallocatable_lhs): Detect allocatable
+ polymorphic arrays.
+
2018-10-18 Paul Thomas <pault@gcc.gnu.org>
PR fortran/58618
diff --git a/gcc/fortran/trans-array.c b/gcc/fortran/trans-array.c
index ea4cf8c..47fec13 100644
--- a/gcc/fortran/trans-array.c
+++ b/gcc/fortran/trans-array.c
@@ -9616,9 +9616,15 @@ gfc_is_reallocatable_lhs (gfc_expr *expr)
if (sym->ts.type == BT_CLASS
&& !sym->attr.associate_var
&& CLASS_DATA (sym)->attr.allocatable
- && expr->ref && expr->ref->type == REF_COMPONENT
- && strcmp (expr->ref->u.c.component->name, "_data") == 0
- && expr->ref->next == NULL)
+ && expr->ref
+ && ((expr->ref->type == REF_ARRAY && expr->ref->u.ar.type == AR_FULL
+ && expr->ref->next == NULL)
+ || (expr->ref->type == REF_COMPONENT
+ && strcmp (expr->ref->u.c.component->name, "_data") == 0
+ && (expr->ref->next == NULL
+ || (expr->ref->next->type == REF_ARRAY
+ && expr->ref->next->u.ar.type == AR_FULL
+ && expr->ref->next->next == NULL)))))
return true;
/* An allocatable variable. */
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 4929e36..c2a3bd1 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2018-10-18 Tobias Burnus <burnus@net-b.de>
+
+ PR fortran/87625
+ * gfortran.dg/realloc_on_assign_31.f90: New file.
+
2018-10-18 David Malcolm <dmalcolm@redhat.com>
PR tree-optimization/87562
diff --git a/gcc/testsuite/gfortran.dg/realloc_on_assign_31.f90 b/gcc/testsuite/gfortran.dg/realloc_on_assign_31.f90
new file mode 100644
index 0000000..55096d1
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/realloc_on_assign_31.f90
@@ -0,0 +1,31 @@
+! { dg-do run }
+!
+! PR fortran/87625
+!
+! Ensure that "var" gets allocated.
+!
+! Contributed by Tobias Burnus
+!
+program test
+ implicit none
+ type t
+ integer :: i
+ end type t
+ class(t), allocatable :: var(:)
+ call poly_init()
+ print *, var(:)%i
+ if (lbound(var, 1) /= 1 .and. ubound(var, 1) /= 2) call abort()
+ if (var(1)%i /= 11 .or. var(2)%i /= 12) call abort()
+ call poly_init2()
+ !print *, var(:)%i
+ if (lbound(var, 1) /= 1 .and. ubound(var, 1) /= 3) call abort()
+ if (var(1)%i /= 11 .or. var(2)%i /= 12 .or. var(3)%i /= 13) call abort()
+contains
+ subroutine poly_init()
+ !allocate(var(2))
+ var = [t :: t(11), t(12)]
+ end subroutine poly_init
+ subroutine poly_init2()
+ var = [t :: t(11), t(12), t(13)]
+ end subroutine poly_init2
+ end program test