File fix-crash-in-f-typeprint.c.patch of Package gdb

From a69161a5cbdd93ccd27ea6e07139611039ff3b56 Mon Sep 17 00:00:00 2001
From: Tom Tromey <tom@tromey.com>
Date: Sat, 13 Sep 2025 13:44:10 -0600
Subject: [PATCH 09/25] Fix crash in f-typeprint.c

I noticed a crash in f-typeprint.c that was hidden by an xfail:

XFAIL: gdb.fortran/vla-array.exp: print variable length string array type (GDB internal error) (PRMS gcc/101826)

I think this was introduced by commit 6594ca4a ("do not handle a NULL
linebuffer in pager_file::puts") but not detected due to the xfail.

It seems bad for an xfail to cover up a crash but I haven't
investigated that.

Meanwhile, this patch fixes the crash by checking for a NULL pointer
when calling gdb_puts.

Approved-by: Kevin Buettner <kevinb@redhat.com>
(cherry picked from commit 18400a9cdf6b3d84996a99697a97774f268576c2)
---
 gdb/f-typeprint.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/gdb/f-typeprint.c b/gdb/f-typeprint.c
index 36e434ae5c2..cba7099c0db 100644
--- a/gdb/f-typeprint.c
+++ b/gdb/f-typeprint.c
@@ -414,9 +414,11 @@ f_language::f_type_print_base (struct type *type, struct ui_file *stream,
       if (show > 0)
 	f_type_print_derivation_info (type, stream);
 
-      gdb_puts (" ", stream);
-
-      gdb_puts (type->name (), stream);
+      if (type->name () != nullptr)
+	{
+	  gdb_puts (" ", stream);
+	  gdb_puts (type->name (), stream);
+	}
 
       /* According to the definition,
 	 we only print structure elements in case show > 0.  */
@@ -435,7 +437,8 @@ f_language::f_type_print_base (struct type *type, struct ui_file *stream,
 	      gdb_puts ("\n", stream);
 	    }
 	  gdb_printf (stream, "%*sEnd Type ", level, "");
-	  gdb_puts (type->name (), stream);
+	  if (type->name () != nullptr)
+	    gdb_puts (type->name (), stream);
 	}
       break;
 
-- 
2.51.0