> The program could read this -1 to (for example) uint16_t and interpret as
65535 and fail to notice the parent is not giving any fd.
File descriptors have been of int type since Unix was designed (at least)
and -1 is documented as the invalid descriptor. E.g. the open() system call
and every
On Tue, Feb 9, 2021 at 5:31 AM Edward Welbourne wrote:
> Rather than removing the jobserver-auth data, you could amend the
> MAKEFLAGS to includ jobserver-auth data with plainly invalid fds,
i like jobserver-auth data with plainly invalid fds, because it lets
older binaries fail on parsing
Paul Smith (8 February 2021 20:38) wrote:
> There is a loss of debugging information if we make this change: today
> make can detect if it was invoked in a way that _should_ expect to
> receive a jobserver context, but _didn't_ receive that context. That
> is, if make sees that jobserver-auth is
