From 8f72249ff4cbd0a5c701b99ee8aa1ca9d82df046 Mon Sep 17 00:00:00 2001
From: Steve Kargl <kargl@gcc.gnu.org>
Date: Sat, 10 Dec 2022 22:17:15 +0100
Subject: Fortran: fix ICE on bad use of statement function [PR107995]

gcc/fortran/ChangeLog:

	PR fortran/107995
	* interface.cc (gfc_check_dummy_characteristics): Reject statement
	function dummy arguments.

gcc/testsuite/ChangeLog:

	PR fortran/107995
	* gfortran.dg/pr107995.f90: New test.
---
 gcc/fortran/interface.cc | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'gcc/fortran/interface.cc')

diff --git a/gcc/fortran/interface.cc b/gcc/fortran/interface.cc
index 73799c1..7d8eeda 100644
--- a/gcc/fortran/interface.cc
+++ b/gcc/fortran/interface.cc
@@ -1334,6 +1334,12 @@ gfc_check_dummy_characteristics (gfc_symbol *s1, gfc_symbol *s2,
   if (s1 == NULL || s2 == NULL)
     return s1 == s2 ? true : false;
 
+  if (s1->attr.proc == PROC_ST_FUNCTION || s2->attr.proc == PROC_ST_FUNCTION)
+    {
+      strncpy (errmsg, "Statement function", err_len);
+      return false;
+    }
+
   /* Check type and rank.  */
   if (type_must_agree)
     {
-- 
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