ABI change: fix use of off_t, size_t, and integer types

Significantly improve the code's use of off_t for file offsets, size_t
for memory sizes, and integer types in cases where there has to be
compatibility with external interfaces.  Rework sections of the code
that would have prevented qpdf from working on files larger than 2 (or
maybe 4) GB in size.

1 files changed, 2 insertions, 2 deletions

diff --git a/libqpdf/qpdf-c.cc b/libqpdf/qpdf-c.cc
index 784351bc..2be301bb 100644
--- a/libqpdf/qpdf-c.cc
+++ b/libqpdf/qpdf-c.cc
@@ -462,10 +462,10 @@ static void qpdf_get_buffer_internal(qpdf_data qpdf)
     }
 }
 
-unsigned long qpdf_get_buffer_length(qpdf_data qpdf)
+size_t qpdf_get_buffer_length(qpdf_data qpdf)
 {
     qpdf_get_buffer_internal(qpdf);
-    unsigned long result = 0L;
+    size_t result = 0;
     if (qpdf->output_buffer)
     {
 	result = qpdf->output_buffer->getSize();