File unbreak-gnulib.diff of Package cdecl

From: Jan Engelhardt <jengelh@inai.de>
Date: 2021-10-03 18:24:41.647102516 +0200

Resolve a build failure due to unexpanded macros.
(string.in.h is missing the fallback definition for _GL_*
that are already present in stdlib.in.h.)
---
 lib/string.in.h |   11 +++++++++++
 1 file changed, 11 insertions(+)

Index: cdecl-11.2/lib/string.in.h
===================================================================
--- cdecl-11.2.orig/lib/string.in.h
+++ cdecl-11.2/lib/string.in.h
@@ -420,6 +420,17 @@ _GL_WARN_ON_USE (strchrnul, "strchrnul i
 # endif
 #endif
 
+#ifndef _GL_ATTRIBUTE_MALLOC
+# if __GNUC__ >= 3 || defined __clang__
+#  define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__))
+# else
+#  define _GL_ATTRIBUTE_MALLOC
+# endif
+#endif
+#ifndef _GL_ATTRIBUTE_DEALLOC_FREE
+# define _GL_ATTRIBUTE_DEALLOC_FREE _GL_ATTRIBUTE_DEALLOC (free, 1)
+#endif
+
 /* Duplicate S, returning an identical malloc'd string.  */
 #if @GNULIB_STRDUP@
 # if @REPLACE_STRDUP@