Fix build of example/memfs_ll.cc on 32 bit architectures

The code uses std::min() which expects its arguments to be size_t. Two
times it uses an offset declared as off_t. While both size_t and off_t
are 32-bit integers, the latter is signed. On 64 bit architectures
the conversation of off_t -> size_t performed automatically. On 32 bit
architectures it needs a type cast.

Signed-off-by: Laszlo Boszormenyi (GCS) <gcs@debian.org>

diff --git a/example/memfs_ll.cc b/example/memfs_ll.cc
index c7b966359bb03a0914dc6df4099041eb1daba628..9898f25285d8d1ff1042cdaa7c83f7d0ca6dd8fb 100644 (file)
--- a/example/memfs_ll.cc
+++ b/example/memfs_ll.cc
@@ -150,7 +150,7 @@ class Inode {
 
        void read_content(char *buf, size_t size, off_t offset) const
        {
-               size_t bytes_to_read = std::min(size, content.size() - offset);
+               size_t bytes_to_read = std::min(size, content.size() - (size_t)offset);
                std::copy(content.begin() + offset,
                          content.begin() + offset + bytes_to_read, buf);
        }
@@ -613,7 +613,7 @@ static void memfs_read(fuse_req_t req, fuse_ino_t ino, size_t size,
        }
 
        std::vector<char> content(
-               std::min(size, inode->content_size() - offset));
+               std::min(size, inode->content_size() - (size_t)offset));
        inode->read_content(content.data(), content.size(), offset);
 
        inode->unlock();