1 files changed, 38 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/bind_c_usage_17.f90 b/gcc/testsuite/gfortran.dg/bind_c_usage_17.f90
new file mode 100644
index 000000000..ba342755c
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/bind_c_usage_17.f90
@@ -0,0 +1,38 @@
+! { dg-do run }
+! { dg-additional-sources bind_c_usage_17_c.c }
+!
+! PR fortran/37201
+!
+! 
+!
+MODULE mod
+  INTERFACE
+    FUNCTION cdir() BIND(C,name="cdir") RESULT(r)
+      USE iso_c_binding
+      CHARACTER(kind=C_CHAR) :: r
+    END FUNCTION
+  END INTERFACE
+END MODULE
+
+PROGRAM test
+  USE mod
+  integer :: i = -43
+  character(len=1) :: str1
+  character(len=4) :: str4
+  str1 = 'x'
+  str4 = 'xyzz'
+  str1 = cdir()
+  if(str1 /= '/') call abort()
+  str4 = cdir()
+  if(str4 /= '/' .or. ichar(str4(2:2)) /= 32) call abort()
+  i   = ICHAR(cdir())
+  if (i /= 47) call abort()
+  str4 = 'xyzz'
+  WRITE(str4,'(a)') cdir()
+  if(str4 /= '/' .or. ichar(str4(2:2)) /= 32) call abort()
+  str4 = 'xyzz'
+  WRITE(str4,'(i0)') ICHAR(cdir())
+  if(str4 /= '47' .or. ichar(str4(3:3)) /= 32) call abort()
+END PROGRAM
+
+! { dg-final { cleanup-modules "mod" } }