From fd74a2ee40456a1d1621e88738f8e57536194080 Mon Sep 17 00:00:00 2001
From: Harald Anlauf <anlauf@gmx.de>
Date: Sat, 18 Dec 2021 23:21:35 +0100
Subject: [PATCH] Fortran: reject BOZ type argument to SIZEOF().

gcc/fortran/ChangeLog:

	PR fortran/103412
	* check.c (gfc_check_sizeof): Reject BOZ type argument.

gcc/testsuite/ChangeLog:

	PR fortran/103412
	* gfortran.dg/illegal_boz_arg_2.f90: New test.
---
 gcc/fortran/check.c                             | 3 +++
 gcc/testsuite/gfortran.dg/illegal_boz_arg_2.f90 | 6 ++++++
 2 files changed, 9 insertions(+)
 create mode 100644 gcc/testsuite/gfortran.dg/illegal_boz_arg_2.f90

diff --git a/gcc/fortran/check.c b/gcc/fortran/check.c
index 3934336..625473c 100644
--- a/gcc/fortran/check.c
+++ b/gcc/fortran/check.c
@@ -5135,6 +5135,9 @@ gfc_check_sizeof (gfc_expr *arg)
       return false;
     }
 
+  if (illegal_boz_arg (arg))
+    return false;
+
   /* TYPE(*) is acceptable if and only if it uses an array descriptor.  */
   if (arg->ts.type == BT_ASSUMED
       && (arg->symtree->n.sym->as == NULL
diff --git a/gcc/testsuite/gfortran.dg/illegal_boz_arg_2.f90 b/gcc/testsuite/gfortran.dg/illegal_boz_arg_2.f90
new file mode 100644
index 0000000..3e5f6b6
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/illegal_boz_arg_2.f90
@@ -0,0 +1,6 @@
+! { dg-do compile }
+! PR fortran/103412
+
+program p
+  integer, parameter :: a = sizeof(z'1') ! { dg-error "cannot be an actual" }
+end
-- 
2.7.4