X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fcore%2Fbuffer.cpp;h=240fcd72754b67babe7a28b9ee2fe42a80f1fe4b;hb=df9119a9bf2d348a513c515ed92953353da97b54;hp=811b3e41d7cbfb9ed16e613b29a7c28674d07659;hpb=160e9eea29bd10034733d59507fa1bcca36be401;p=libs%2Fgl.git

diff --git a/source/core/buffer.cpp b/source/core/buffer.cpp
index 811b3e41..240fcd72 100644
--- a/source/core/buffer.cpp
+++ b/source/core/buffer.cpp
@@ -8,11 +8,7 @@ using namespace std;
 namespace Msp {
 namespace GL {
 
-Buffer::Buffer():
-	size(0)
-{ }
-
-void Buffer::storage(unsigned sz)
+void Buffer::storage(size_t sz)
 {
 	if(size>0)
 	{
@@ -33,15 +29,17 @@ void Buffer::data(const void *d)
 	return sub_data(0, size, d);
 }
 
-void Buffer::sub_data(unsigned off, unsigned sz, const void *d)
+void Buffer::sub_data(size_t off, size_t sz, const void *d)
 {
 	if(size==0)
 		throw invalid_operation("Buffer::sub_data");
+	if(off>size || off+sz>size)
+		throw out_of_range("Buffer::sub_data");
 
 	BufferBackend::sub_data(off, sz, d);
 }
 
-void Buffer::require_size(unsigned req_sz) const
+void Buffer::require_size(size_t req_sz) const
 {
 	if(size<req_sz)
 		throw buffer_too_small(format("buffer has %d bytes; %d required", size, req_sz));