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, 1 insertions, 1 deletions

diff --git a/libtests/hex.cc b/libtests/hex.cc
index 0a08fcb8..4e3eefde 100644
--- a/libtests/hex.cc
+++ b/libtests/hex.cc
@@ -15,7 +15,7 @@ int main()
 	bool done = false;
 	while (! done)
 	{
-	    int len = fread(buf, 1, sizeof(buf), stdin);
+	    size_t len = fread(buf, 1, sizeof(buf), stdin);
 	    if (len <= 0)
 	    {
 		done = true;