Fix build of boost-libs in NetBSD/macppc: 'char' is not signed, so a piece

of code was raising warnings and failing to build.  Changed to use 255 for
error conditions instead of -1, along with unsigned chars unconditionally.

1 files changed, 49 insertions, 0 deletions

diff --git a/meta-pkgs/boost/patches/patch-af b/meta-pkgs/boost/patches/patch-af
new file mode 100644
index 00000000000..48696babcc0
--- /dev/null
+++ b/meta-pkgs/boost/patches/patch-af
@@ -0,0 +1,49 @@
+$NetBSD: patch-af,v 1.8 2011/10/14 01:12:06 jmmv Exp $
+
+A 'char' cannot be expected to be signed.  PowerPC, for example, defines
+the 'char' type as unsigned.  Fix this piece of code to not deal with
+signed characters.
+
+--- ./boost/archive/iterators/binary_from_base64.hpp.orig	2011-10-13 23:56:25.000000000 +0000
++++ ./boost/archive/iterators/binary_from_base64.hpp
+@@ -39,28 +39,28 @@ template<class CharType>
+ struct to_6_bit {
+     typedef CharType result_type;
+     CharType operator()(CharType t) const{
+-        const char lookup_table[] = {
+-            -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+-            -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+-            -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,62,-1,-1,-1,63,
+-            52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-1,-1,-1,
+-            -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,
+-            15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1,
+-            -1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,
+-            41,42,43,44,45,46,47,48,49,50,51,-1,-1,-1,-1,-1
++        unsigned char lookup_table[] = {
++            255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
++            255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
++            255,255,255,255,255,255,255,255,255,255,255,62,255,255,255,63,
++            52,53,54,55,56,57,58,59,60,61,255,255,255,255,255,255,
++            255, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,
++            15,16,17,18,19,20,21,22,23,24,25,255,255,255,255,255,
++            255,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,
++            41,42,43,44,45,46,47,48,49,50,51,255,255,255,255,255
+         };
+         // metrowerks trips this assertion - how come?
+         #if ! defined(__MWERKS__)
+         BOOST_STATIC_ASSERT(128 == sizeof(lookup_table));
+         #endif
+-        signed char value = -1;
++        unsigned char value = 255;
+         if((unsigned)t <= 127)
+             value = lookup_table[(unsigned)t];
+-        if(-1 == value)
++        if(255 == value)
+             boost::serialization::throw_exception(
+                 dataflow_exception(dataflow_exception::invalid_base64_character)
+             );
+-        return value;
++        return static_cast< CharType >(value);
+     }
+ };
+