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, 3 insertions, 3 deletions

diff --git a/libtests/rc4.cc b/libtests/rc4.cc
index 8f809ec1..1328fc85 100644
--- a/libtests/rc4.cc
+++ b/libtests/rc4.cc
@@ -17,8 +17,8 @@ int main(int argc, char* argv[])
     char* hexkey = argv[1];
     char* infilename = argv[2];
     char* outfilename = argv[3];
-    int hexkeylen = strlen(hexkey);
-    int keylen = hexkeylen / 2;
+    unsigned int hexkeylen = (unsigned int)strlen(hexkey);
+    unsigned int keylen = hexkeylen / 2;
     unsigned char* key = new unsigned char[keylen + 1];
     key[keylen] = '\0';
 
@@ -56,7 +56,7 @@ int main(int argc, char* argv[])
     bool done = false;
     while (! done)
     {
-	int len = fread(buf, 1, sizeof(buf), infile);
+	size_t len = fread(buf, 1, sizeof(buf), infile);
 	if (len <= 0)
 	{
 	    done = true;