1 files changed, 17 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/o_fast_stacksize.f90 b/gcc/testsuite/gfortran.dg/o_fast_stacksize.f90
new file mode 100644
index 00000000000..a373d15e54e
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/o_fast_stacksize.f90
@@ -0,0 +1,17 @@
+! { dg-do compile }
+! { dg-options "-Ofast -fmax-stack-var-size=100 -fdump-tree-original" }
+MODULE foo
+CONTAINS
+  SUBROUTINE mysum(a)
+    INTEGER :: a(:)
+    WRITE(6,*) SUM(a)
+  END SUBROUTINE
+END MODULE foo
+
+USE foo
+INTEGER, ALLOCATABLE :: a(:)
+INTEGER, PARAMETER :: N=2**26 ! 256Mb array
+ALLOCATE(a(N)) ; a=1
+CALL mysum(a*a)
+END
+! { dg-final { scan-tree-dump-times "__builtin_malloc" 2 "original" } }