[libmicrohttpd] 03/08: Guard stddef.h includes with '#ifdef HAVE_STDDEF_H'

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karlson2k pushed a commit to branch master
in repository libmicrohttpd.

commit f66a23d27116ade5876d7e23d8c077091cd572e9
Author: Evgeny Grin (Karlson2k) <k2k@narod.ru>
AuthorDate: Wed Sep 1 10:47:40 2021 +0300

    Guard stddef.h includes with '#ifdef HAVE_STDDEF_H'
---
 src/include/platform.h       | 2 ++
 src/microhttpd/md5.h         | 2 ++
 src/microhttpd/memorypool.h  | 2 ++
 src/microhttpd/mhd_sockets.h | 2 ++
 src/microhttpd/mhd_str.h     | 2 ++
 src/microhttpd/sha1.h        | 4 +++-
 src/microhttpd/sha256.h      | 4 +++-
 src/microhttpd/tsearch.c     | 9 ++++++---
 8 files changed, 22 insertions(+), 5 deletions(-)

diff --git a/src/include/platform.h b/src/include/platform.h
index 716f23ab..b5861d25 100644
--- a/src/include/platform.h
+++ b/src/include/platform.h
@@ -49,7 +49,9 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <signal.h>
+#ifdef HAVE_STDDEF_H
 #include <stddef.h>
+#endif /* HAVE_STDDEF_H */
 
 /* different OSes have fd_set in
    a broad range of header files;
diff --git a/src/microhttpd/md5.h b/src/microhttpd/md5.h
index 6c2a33f5..14cee305 100644
--- a/src/microhttpd/md5.h
+++ b/src/microhttpd/md5.h
@@ -20,7 +20,9 @@
 
 #include "mhd_options.h"
 #include <stdint.h>
+#ifdef HAVE_STDDEF_H
 #include <stddef.h>
+#endif /* HAVE_STDDEF_H */
 
 #define MD5_BLOCK_SIZE              64
 #define MD5_DIGEST_SIZE             16
diff --git a/src/microhttpd/memorypool.h b/src/microhttpd/memorypool.h
index 11355a87..955fea4d 100644
--- a/src/microhttpd/memorypool.h
+++ b/src/microhttpd/memorypool.h
@@ -31,7 +31,9 @@
 #define MEMORYPOOL_H
 
 #include "mhd_options.h"
+#ifdef HAVE_STDDEF_H
 #include <stddef.h>
+#endif /* HAVE_STDDEF_H */
 #ifdef HAVE_STDBOOL_H
 #include <stdbool.h>
 #endif
diff --git a/src/microhttpd/mhd_sockets.h b/src/microhttpd/mhd_sockets.h
index 18f831a9..c8c1df2e 100644
--- a/src/microhttpd/mhd_sockets.h
+++ b/src/microhttpd/mhd_sockets.h
@@ -115,7 +115,9 @@
 #  include <poll.h>
 #endif
 
+#ifdef HAVE_STDDEF_H
 #include <stddef.h>
+#endif /* HAVE_STDDEF_H */
 #if defined(_MSC_FULL_VER) && ! defined (_SSIZE_T_DEFINED)
 #  include <stdint.h>
 #  define _SSIZE_T_DEFINED
diff --git a/src/microhttpd/mhd_str.h b/src/microhttpd/mhd_str.h
index b21ae256..a03dc49f 100644
--- a/src/microhttpd/mhd_str.h
+++ b/src/microhttpd/mhd_str.h
@@ -28,7 +28,9 @@
 
 #include "mhd_options.h"
 #include <stdint.h>
+#ifdef HAVE_STDDEF_H
 #include <stddef.h>
+#endif /* HAVE_STDDEF_H */
 #include <sys/types.h>
 #ifdef HAVE_STDBOOL_H
 #include <stdbool.h>
diff --git a/src/microhttpd/sha1.h b/src/microhttpd/sha1.h
index 3464f268..851a4429 100644
--- a/src/microhttpd/sha1.h
+++ b/src/microhttpd/sha1.h
@@ -28,7 +28,9 @@
 
 #include "mhd_options.h"
 #include <stdint.h>
-#include <stddef.h> /* for size_t */
+#ifdef HAVE_STDDEF_H
+#include <stddef.h>  /* for size_t */
+#endif /* HAVE_STDDEF_H */
 
 /**
  *  SHA-1 digest is kept internally as 5 32-bit words.
diff --git a/src/microhttpd/sha256.h b/src/microhttpd/sha256.h
index 3b866af2..cac3cb28 100644
--- a/src/microhttpd/sha256.h
+++ b/src/microhttpd/sha256.h
@@ -28,7 +28,9 @@
 
 #include "mhd_options.h"
 #include <stdint.h>
-#include <stddef.h>
+#ifdef HAVE_STDDEF_H
+#include <stddef.h>  /* for size_t */
+#endif /* HAVE_STDDEF_H */
 
 
 /**
diff --git a/src/microhttpd/tsearch.c b/src/microhttpd/tsearch.c
index 971ec276..0a65ce94 100644
--- a/src/microhttpd/tsearch.c
+++ b/src/microhttpd/tsearch.c
@@ -10,9 +10,12 @@
  */
 
 #include "tsearch.h"
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif /* HAVE_STDLIB_H */
+#include "mhd_options.h"
+#ifdef HAVE_STDDEF_H
+#include <stddef.h>
+#else  /* ! HAVE_STDDEF_H */
+#define NULL ((void*)0)
+#endif /* ! HAVE_STDDEF_H */
 
 
 typedef struct node

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