From: Harald Anlauf <anlauf@gmx.de>
Date: Sun, 18 Jul 2021 19:35:53 +0000 (+0200)
Subject: Fortran: reject FORMAT tag of unknown type.
X-Git-Tag: basepoints/gcc-13~5927
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f527b8233498b40c8a2c616b82265f2e58aba42a;p=thirdparty%2Fgcc.git

Fortran: reject FORMAT tag of unknown type.

gcc/fortran/ChangeLog:

	PR fortran/101084
	* io.c (resolve_tag_format): Extend FORMAT check to unknown type.

gcc/testsuite/ChangeLog:

	PR fortran/101084
	* gfortran.dg/fmt_nonchar_3.f90: New test.
---

diff --git a/gcc/fortran/io.c b/gcc/fortran/io.c
index 40cd76eb5858..fc97df79ecab 100644
--- a/gcc/fortran/io.c
+++ b/gcc/fortran/io.c
@@ -1763,7 +1763,7 @@ resolve_tag_format (gfc_expr *e)
   if (e->ts.type != BT_CHARACTER)
     {
       if (e->ts.type == BT_DERIVED || e->ts.type == BT_CLASS
-	  || e->ts.type == BT_VOID)
+	  || e->ts.type == BT_VOID || e->ts.type == BT_UNKNOWN)
 	{
 	  gfc_error ("Non-character non-Hollerith in FORMAT tag at %L",
 		     &e->where);
diff --git a/gcc/testsuite/gfortran.dg/fmt_nonchar_3.f90 b/gcc/testsuite/gfortran.dg/fmt_nonchar_3.f90
new file mode 100644
index 000000000000..3b3c260ef7fc
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/fmt_nonchar_3.f90
@@ -0,0 +1,7 @@
+! { dg-do compile }
+! PR fortran/101084
+
+program p
+  integer, parameter :: a(0) = 1
+  print int(a) ! { dg-error "Non-character non-Hollerith in FORMAT tag" }
+end