PR libfortran/20950

	* io/inquire.c (inquire_via_unit): Check for the gfc_unit being
	NULL when setting ioparm.sequential.
	* gfortran.dg/pr20950.f: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@98312 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 10 insertions, 7 deletions

diff --git a/libgfortran/io/inquire.c b/libgfortran/io/inquire.c
index 1f0fcac6530..731adad7c86 100644
--- a/libgfortran/io/inquire.c
+++ b/libgfortran/io/inquire.c
@@ -87,13 +87,16 @@ inquire_via_unit (gfc_unit * u)
 
   if (ioparm.sequential != NULL)
     {
-      /* disallow an open direct access file to be accessed
-         sequentially */
-      if (u->flags.access==ACCESS_DIRECT)
-        p = "NO";
-      else   
-        p = (u == NULL) ? inquire_sequential (NULL, 0) :
-        inquire_sequential (u->file, u->file_len);
+      if (u == NULL)
+	p = inquire_sequential (NULL, 0);
+      else
+	{
+          /* disallow an open direct access file to be accessed sequentially */
+          if (u->flags.access == ACCESS_DIRECT)
+            p = "NO";
+          else   
+            p = inquire_sequential (u->file, u->file_len);
+	}
 
       cf_strcpy (ioparm.sequential, ioparm.sequential_len, p);
     }