Re: [boost] [iostreams] mapped_file trouble

Dylan Trotter wrote:

Hi,

I just wanted to point out a fairly major flaw with the Windows implementation of memory mapped files. In memory_mapped.cpp on line 205-207 a file mapping is created as follows:

::CreateFileMappingA( pimpl_->handle_, NULL, readonly ? PAGE_READONLY : PAGE_READWRITE, 0, 0, p.path.c_str() );

The problem with this is that if p.path.c_str() has any backslashes in it (very likely given that it's Windows), the call fails. From the MS documentation:

Thanks. I thought I eliminated the name a long time ago; I'll fix it in the patch I'm preparing right now (and add you to the acknowledgments).

Thanks,

Dylan Trotter

Jonathan