From debb45054a3c4d4da3faac372e993b594e5a0df7 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Wed, 6 May 1998 06:21:35 +0000
Subject: [PATCH] Solaris 2.6 doesn't support "signed char". What a broken
 system!

---
 README       |  6 ++++++
 checksum.c   |  2 +-
 configure.in |  8 +++++++-
 match.c      | 10 +++++-----
 rsync.h      |  6 ++++++
 5 files changed, 25 insertions(+), 7 deletions(-)

diff --git a/README b/README
index 20d5054b..e11ef88d 100644
--- a/README
+++ b/README
@@ -72,6 +72,12 @@ To install rsync, first run the "configure" script. This will create a
 Makefile and config.h appropriate for your system. Then type
 "make". 
 
+Note that on some systems you will have to force configure not to use
+gcc because gcc may not support some features (such as 64 bit file
+offsets) that your system may support. Set the environment variable CC
+to the name of your native compiler before running configure in this
+case. 
+
 Once built put a copy of rsync in your search path on the local and
 remote systems (or use "make install"). That's it!
 
diff --git a/checksum.c b/checksum.c
index 6186aae3..6dc935e0 100644
--- a/checksum.c
+++ b/checksum.c
@@ -34,7 +34,7 @@ uint32 get_checksum1(char *buf1,int len)
 {
     int i;
     uint32 s1, s2;
-    signed char *buf = (signed char *)buf1;
+    schar *buf = (schar *)buf1;
 
     s1 = s2 = 0;
     for (i = 0; i < (len-4); i+=4) {
diff --git a/configure.in b/configure.in
index 511620af..65a40a56 100644
--- a/configure.in
+++ b/configure.in
@@ -60,7 +60,13 @@ echo $ac_n "checking for off64_t ... $ac_c"
 AC_TRY_RUN([#include <stdio.h>
 #include <sys/stat.h>
 main() { struct stat64 st; off64_t s; exit((lstat64("/dev/null", &st)==0)?0:1); }],
-echo yes;AC_DEFINE(HAVE_LONGLONG), 
+echo yes;AC_DEFINE(HAVE_OFF64_T), 
+echo no)
+
+echo $ac_n "checking for unsigned char ... $ac_c"
+AC_TRY_RUN([#include <stdio.h>
+main() { char c; c=250; exit((c > 0)?0:1); }],
+echo yes;AC_DEFINE(HAVE_UNSIGNED_CHAR), 
 echo no)
 
 echo $ac_n "checking for utimbuf ... $ac_c"
diff --git a/match.c b/match.c
index dda156f0..3689af4f 100644
--- a/match.c
+++ b/match.c
@@ -130,14 +130,14 @@ static void hash_search(int f,struct sum_struct *s,
 	int end;
 	char sum2[SUM_LENGTH];
 	uint32 s1, s2, sum; 
-	signed char *map;
+	schar *map;
 
 	if (verbose > 2)
 		fprintf(FINFO,"hash search b=%d len=%d\n",s->n,(int)len);
 
 	k = MIN(len, s->n);
 	
-	map = (signed char *)map_ptr(buf,0,k);
+	map = (schar *)map_ptr(buf,0,k);
 	
 	sum = get_checksum1((char *)map, k);
 	s1 = sum & 0xFFFF;
@@ -178,7 +178,7 @@ static void hash_search(int f,struct sum_struct *s,
 			
 			if (!done_csum2) {
 				int l = MIN(s->n,len-offset);
-				map = (signed char *)map_ptr(buf,offset,l);
+				map = (schar *)map_ptr(buf,offset,l);
 				get_checksum2((char *)map,l,sum2);
 				done_csum2 = 1;
 			}
@@ -191,7 +191,7 @@ static void hash_search(int f,struct sum_struct *s,
 			matched(f,s,buf,offset,i);
 			offset += s->sums[i].len - 1;
 			k = MIN((len-offset), s->n);
-			map = (signed char *)map_ptr(buf,offset,k);
+			map = (schar *)map_ptr(buf,offset,k);
 			sum = get_checksum1((char *)map, k);
 			s1 = sum & 0xFFFF;
 			s2 = sum >> 16;
@@ -201,7 +201,7 @@ static void hash_search(int f,struct sum_struct *s,
 		
 	null_tag:
 		/* Trim off the first byte from the checksum */
-		map = (signed char *)map_ptr(buf,offset,k+1);
+		map = (schar *)map_ptr(buf,offset,k+1);
 		s1 -= map[0] + CHAR_OFFSET;
 		s2 -= k * (map[0]+CHAR_OFFSET);
 		
diff --git a/rsync.h b/rsync.h
index 34eeb575..3418b817 100644
--- a/rsync.h
+++ b/rsync.h
@@ -179,6 +179,12 @@
 #define uchar unsigned char
 #endif
 
+#if HAVE_UNSIGNED_CHAR
+#define schar signed char
+#else
+#define schar char
+#endif
+
 #ifndef int32
 #if (SIZEOF_INT == 4)
 #define int32 int
-- 
2.34.1