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-rw-r--r--crypto/md2/md2.h1
-rw-r--r--crypto/md4/md4.h1
-rw-r--r--crypto/md5/md5.h1
-rw-r--r--crypto/ripemd/ripemd.h1
4 files changed, 4 insertions, 0 deletions
diff --git a/crypto/md2/md2.h b/crypto/md2/md2.h
index 5b71855cb2..a46120e7d4 100644
--- a/crypto/md2/md2.h
+++ b/crypto/md2/md2.h
@@ -63,6 +63,7 @@
#ifdef OPENSSL_NO_MD2
#error MD2 is disabled.
#endif
+#include <stddef.h>
#define MD2_DIGEST_LENGTH 16
#define MD2_BLOCK 16
diff --git a/crypto/md4/md4.h b/crypto/md4/md4.h
index d289d287cb..c3ed9b3f75 100644
--- a/crypto/md4/md4.h
+++ b/crypto/md4/md4.h
@@ -60,6 +60,7 @@
#define HEADER_MD4_H
#include <openssl/e_os2.h>
+#include <stddef.h>
#ifdef __cplusplus
extern "C" {
diff --git a/crypto/md5/md5.h b/crypto/md5/md5.h
index d8c52345de..4cbf84386b 100644
--- a/crypto/md5/md5.h
+++ b/crypto/md5/md5.h
@@ -60,6 +60,7 @@
#define HEADER_MD5_H
#include <openssl/e_os2.h>
+#include <stddef.h>
#ifdef __cplusplus
extern "C" {
diff --git a/crypto/ripemd/ripemd.h b/crypto/ripemd/ripemd.h
index dea1f18211..5942eb6180 100644
--- a/crypto/ripemd/ripemd.h
+++ b/crypto/ripemd/ripemd.h
@@ -60,6 +60,7 @@
#define HEADER_RIPEMD_H
#include <openssl/e_os2.h>
+#include <stddef.h>
#ifdef __cplusplus
extern "C" {