- Preparations for clib2 1.205

- Added support for ELF shared objects and libraries. This is implemented through
  constructor/destructor functions, which means that you can use this
  functionality even in Amiga Exec style shared libraries, with the proper
  library initialization code to invoke the constructor/destructor functions
  for you.

- Updated uname() to recognize AmigaOS 4.1.

- The translation from Unix to Amiga path names did not properly process
  multiple occurences of "/./" in the path name. Thanks go to Steven Solie
  for finding the issue.

- The detection of "/./" and "/../" patterns in Unix path names to be
  translated into Amiga path names did not test if it was overrunning
  the end of the string.

- If strcmp(), strncmp() and memcmp() detect a pair of different
  characters, then the function result must be calculated as if the
  characters were of type "unsigned char". This is a requirement
  according to the ISO 'C' (1994) standard. Thanks go to Georg Steger
  for finding the issue.

- The definitions for INT_MIN, INT_MAX and UINT_MAX in <limits.h> no
  longer use long integer types, as prompted by Steven Solie.


git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@15204 87f5fb63-7c3d-0410-a384-fd976d0f7a62

library/string_memcmp.c

@@ -1,5 +1,5 @@
 /*
- * $Id: string_memcmp.c,v 1.7 2006-01-08 12:04:26 obarthel Exp $
+ * $Id: string_memcmp.c,v 1.8 2010-08-20 15:33:36 obarthel Exp $
  *
  * :ts=4
  *
@@ -135,7 +135,14 @@ __memcmp(const char *m1,const char *m2,size_t len)
 	{
 		if((*m1) != (*m2))
 		{
-			result = (*m1) - (*m2);
+			int b1,b2;
+			
+			/* The comparison must be performed as if the
+			   bytes were unsigned characters. */
+			b1 = *(unsigned char *)m1;
+			b2 = *(unsigned char *)m2;
+
+			result = b1 - b2;
 			break;
 		}
 
@@ -185,7 +192,12 @@ memcmp(const void *ptr1, const void *ptr2, size_t len)
 			{
 				if((*m1) != (*m2))
 				{
-					result = (*m1) - (*m2);
+					int b1,b2;
+
+					b1 = *(unsigned char *)m1;
+					b2 = *(unsigned char *)m2;
+
+					result = b1 - b2;
 					break;
 				}