diff --git a/package/uclibc/0001-include-ctype.h-drop-is-_l-macro-definitions.patch b/package/uclibc/0001-include-ctype.h-drop-is-_l-macro-definitions.patch
new file mode 100644
index 0000000000..5557a9c1e7
--- /dev/null
+++ b/package/uclibc/0001-include-ctype.h-drop-is-_l-macro-definitions.patch
@@ -0,0 +1,72 @@
+From d1a3ca7ca56630fddde7311a0474eed4a21335a7 Mon Sep 17 00:00:00 2001
+From: Max Filippov <jcmvbkbc@gmail.com>
+Date: Mon, 3 Feb 2020 13:57:32 -0800
+Subject: [PATCH] include/ctype.h: drop is*_l macro definitions
+
+ctype locale-specific macro definitions are broken because they result
+in dereference of pointer to structure of incomplete type.
+Drop these macros since they are optional and let applications use
+functions with the same names.
+
+This change fixes parted-3.3 build with uClibc-ng:
+  http://autobuild.buildroot.net/results/b7ba1210d5aa184b133f0171da621d2b0083ec39/build-end.log
+
+Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
+---
+ include/ctype.h | 33 ---------------------------------
+ 1 file changed, 33 deletions(-)
+
+diff --git a/include/ctype.h b/include/ctype.h
+index ecd5e730886a..e934cf3321a6 100644
+--- a/include/ctype.h
++++ b/include/ctype.h
+@@ -350,46 +350,13 @@ libc_hidden_proto(tolower_l)
+ /* Return the uppercase version of C.  */
+ extern int toupper_l (int __c, __locale_t __l) __THROW;
+ 
+-# if __GNUC__ >= 2 && defined __OPTIMIZE__ && !defined __cplusplus
+-#  define tolower_l(c, locale) __tobody(c, tolower_l, (locale)->__ctype_tolower, (c, locale))
+-#  define toupper_l(c, locale) __tobody(c, toupper_l, (locale)->__ctype_toupper, (c, locale))
+-# endif	/* Optimizing gcc */
+-
+-
+-# define __isctype_l(c, type, locale) ((locale)->__ctype_b[(int) (c)] & (__ctype_mask_t) type)
+ # ifndef __NO_CTYPE
+-#  define __isalnum_l(c,l)	__isctype_l((c), _ISalnum, (l))
+-#  define __isalpha_l(c,l)	__isctype_l((c), _ISalpha, (l))
+-#  define __iscntrl_l(c,l)	__isctype_l((c), _IScntrl, (l))
+-#  define __isdigit_l(c,l)	__isctype_l((c), _ISdigit, (l))
+-#  define __islower_l(c,l)	__isctype_l((c), _ISlower, (l))
+-#  define __isgraph_l(c,l)	__isctype_l((c), _ISgraph, (l))
+-#  define __isprint_l(c,l)	__isctype_l((c), _ISprint, (l))
+-#  define __ispunct_l(c,l)	__isctype_l((c), _ISpunct, (l))
+-#  define __isspace_l(c,l)	__isctype_l((c), _ISspace, (l))
+-#  define __isupper_l(c,l)	__isctype_l((c), _ISupper, (l))
+-#  define __isxdigit_l(c,l)	__isctype_l((c), _ISxdigit, (l))
+-#  define __isblank_l(c,l)	__isctype_l((c), _ISblank, (l))
+-
+ #  if (defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN) \
+ 	&& defined __UCLIBC_SUSV4_LEGACY__
+ #   define __isascii_l(c,l)	((l), __isascii (c))
+ #   define __toascii_l(c,l)	((l), __toascii (c))
+ #  endif
+ 
+-#  define isalnum_l(c,l)	__isalnum_l ((c), (l))
+-#  define isalpha_l(c,l)	__isalpha_l ((c), (l))
+-#  define iscntrl_l(c,l)	__iscntrl_l ((c), (l))
+-#  define isdigit_l(c,l)	__isdigit_l ((c), (l))
+-#  define islower_l(c,l)	__islower_l ((c), (l))
+-#  define isgraph_l(c,l)	__isgraph_l ((c), (l))
+-#  define isprint_l(c,l)	__isprint_l ((c), (l))
+-#  define ispunct_l(c,l)	__ispunct_l ((c), (l))
+-#  define isspace_l(c,l)	__isspace_l ((c), (l))
+-#  define isupper_l(c,l)	__isupper_l ((c), (l))
+-#  define isxdigit_l(c,l)	__isxdigit_l ((c), (l))
+-#  define isblank_l(c,l)	__isblank_l ((c), (l))
+-
+ #  if (defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN) \
+ 	&& defined __UCLIBC_SUSV4_LEGACY__
+ #   define isascii_l(c,l)	__isascii_l ((c), (l))
+-- 
+2.20.1
+