From 1880dfc53f0ec7a809e3e3f36dcec12971081912 Mon Sep 17 00:00:00 2001
From: Tim Kientzle <kientzle@acm.org>
Date: Sat, 5 Sep 2015 22:43:09 -0700
Subject: [PATCH] Rework the la_ssize_t and la_int64_t definitions to avoid
 redefining la_int64_t if both archive.h and archive_entry.h are included. 
 (This avoids a warning from clang that redefining a typedef is a C11
 feature.)

---
 libarchive/archive.h       | 49 +++++++++++++++++++++++---------------
 libarchive/archive_entry.h | 21 ++++++++--------
 2 files changed, 40 insertions(+), 30 deletions(-)

diff --git a/libarchive/archive.h b/libarchive/archive.h
index 8b7c32032..d3ff9b0d0 100644
--- a/libarchive/archive.h
+++ b/libarchive/archive.h
@@ -45,33 +45,44 @@
 # include <inttypes.h>
 #endif
 
-#if ARCHIVE_VERSION_NUMBER < 4000000
-// also defined in archive_entry.h, don't redefine
-#if !defined(__LA_INT64_T)
+/* Get appropriate definitions of 64-bit integer */
+#if !defined(__LA_INT64_T_DEFINED)
+/* Older code relied on the __LA_INT64_T macro; after 4.0 we'll switch to the typedef exclusively. */
+# if ARCHIVE_VERSION_NUMBER < 4000000
 #define __LA_INT64_T la_int64_t
-#endif
-#define __LA_SSIZE_T la_ssize_t
-#endif
-
-/* Get appropriate definitions of standard POSIX-style types. */
-/* These should match the types used in 'struct stat' */
-#if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__WATCOMC__)
+# endif
+#define __LA_INT64_T_DEFINED
+# if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__WATCOMC__)
 typedef __int64 la_int64_t;
-# if defined(_SSIZE_T_DEFINED) || defined(_SSIZE_T_)
-typedef ssize_t la_ssize_t;
-# elif defined(_WIN64)
-typedef __int64 la_ssize_t;
 # else
-typedef long la_ssize_t;
-# endif
-#else
 # include <unistd.h>  /* ssize_t */
-# if defined(_SCO_DS)
+#  if defined(_SCO_DS)
 typedef long long la_int64_t;
-# else
+#  else
 typedef int64_t la_int64_t;
+#  endif
 # endif
+#endif
+
+/* The la_ssize_t should match the type used in 'struct stat' */
+#if !defined(__LA_SSIZE_T_DEFINED)
+/* Older code relied on the __LA_SSIZE_T macro; after 4.0 we'll switch to the typedef exclusively. */
+# if ARCHIVE_VERSION_NUMBER < 4000000
+#define __LA_SSIZE_T la_ssize_t
+# endif
+#define __LA_SSIZE_T_DEFINED
+# if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__WATCOMC__)
+#  if defined(_SSIZE_T_DEFINED) || defined(_SSIZE_T_)
 typedef ssize_t la_ssize_t;
+#  elif defined(_WIN64)
+typedef __int64 la_ssize_t;
+#  else
+typedef long la_ssize_t;
+#  endif
+# else
+# include <unistd.h>  /* ssize_t */
+typedef ssize_t la_ssize_t;
+# endif
 #endif
 
 /*
diff --git a/libarchive/archive_entry.h b/libarchive/archive_entry.h
index 21a0f30fd..996d60f4b 100644
--- a/libarchive/archive_entry.h
+++ b/libarchive/archive_entry.h
@@ -47,22 +47,21 @@
 #include <windows.h>
 #endif
 
-#if ARCHIVE_VERSION_NUMBER < 4000000
-// also defined in archive.h, don't redefine
-#if !defined(__LA_INT64_T)
-#define __LA_INT64_T la_int64_t
-#endif
-#endif
-
 /* Get a suitable 64-bit integer type. */
-#if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__WATCOMC__)
+#if !defined(__LA_INT64_T_DEFINED)
+# if ARCHIVE_VERSION_NUMBER < 4000000
+#define __LA_INT64_T la_int64_t
+# endif
+#define __LA_INT64_T_DEFINED
+# if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__WATCOMC__)
 typedef __int64 la_int64_t;
-#else
+# else
 #include <unistd.h>
-# if defined(_SCO_DS)
+#  if defined(_SCO_DS)
 typedef long long la_int64_t;
-# else
+#  else
 typedef int64_t la_int64_t;
+#  endif
 # endif
 #endif
 
-- 
2.47.2