Wt

A user using a 32 bit build of Wt reported via email that it is possible to get the following error (EOVERFLOW):

stat: Value too large for defined data type
Document root (".") not valid.

This happened when the document root was located on a network share. Perhaps this network share was using inode numbers that were too large?

This is what the stat(2) man page has to say about it:

EOVERFLOW
              pathname or fd refers to a file whose size, inode number, or number of blocks cannot be represented in, respectively, the types off_t, ino_t, or blkcnt_t.  This error can occur when, for  exam‐
              ple, an application compiled on a 32-bit platform without -D_FILE_OFFSET_BITS=64 calls stat() on a file whose size exceeds (1<<31)-1 bytes.

There are a few ways we can fix this. We can either make sure -D_FILE_OFFSET_BITS=64 is defined, or we can go less low level and use boost::filesystem or std::filesystem's status function. I propose we go for the latter option and replace our own uses of the stat() function with the appropriate use of boost::filesystem instead.