6 files changed, 10 insertions, 0 deletions
diff --git a/newlib/libc/argz/argz_count.c b/newlib/libc/argz/argz_count.c
index 0c8a816c1..8f0366828 100644
--- a/newlib/libc/argz/argz_count.c
+++ b/newlib/libc/argz/argz_count.c
@@ -5,6 +5,7 @@
  */
 
 #include <_ansi.h>
+#include <stddef.h>
 #include <sys/types.h>
 
 size_t
diff --git a/newlib/libc/argz/argz_extract.c b/newlib/libc/argz/argz_extract.c
index 56c604684..a819f3953 100644
--- a/newlib/libc/argz/argz_extract.c
+++ b/newlib/libc/argz/argz_extract.c
@@ -4,6 +4,7 @@
  * is freely granted, provided that this notice is preserved.
  */
 
+#include <stddef.h>
 #include <argz.h>
 #include <sys/types.h>
 
diff --git a/newlib/libc/argz/argz_stringify.c b/newlib/libc/argz/argz_stringify.c
index febf8b4f9..04bea7514 100644
--- a/newlib/libc/argz/argz_stringify.c
+++ b/newlib/libc/argz/argz_stringify.c
@@ -5,6 +5,7 @@
  */
 
 #include <_ansi.h>
+#include <stddef.h>
 #include <sys/types.h>
 
 void
diff --git a/newlib/libc/search/hash.h b/newlib/libc/search/hash.h
index db9e96dd8..6491814d6 100644
--- a/newlib/libc/search/hash.h
+++ b/newlib/libc/search/hash.h
@@ -38,6 +38,8 @@
  */
 
 #include <sys/param.h>
+#define __need_size_t
+#include <stddef.h>
 
 /* Check that newlib understands the byte order of its target system.  */
 #ifndef BYTE_ORDER
diff --git a/newlib/libc/sys/linux/include/sched.h b/newlib/libc/sys/linux/include/sched.h
index becad0f36..91a7a7e7b 100644
--- a/newlib/libc/sys/linux/include/sched.h
+++ b/newlib/libc/sys/linux/include/sched.h
@@ -22,6 +22,9 @@
 
 #include <features.h>
 
+#define __need_size_t
+#include <stddef.h>
+
 /* Get type definitions.  */
 #include <bits/types.h>
 
diff --git a/newlib/libc/sys/linux/sys/types.h b/newlib/libc/sys/linux/sys/types.h
index ba191f072..8e674eff6 100644
--- a/newlib/libc/sys/linux/sys/types.h
+++ b/newlib/libc/sys/linux/sys/types.h
@@ -50,6 +50,8 @@
  * libc/include/sys/types.h.  Repeat those here and
  * skip the kernel's definitions. */
 
+#define __need_size_t
+#include <stddef.h>
 #include <sys/config.h>
 #include <features.h>
 #include <machine/types.h>