Re: [boost] Odd build error in 1.85 pre-release - filesystem

On 2/23/24 05:07, Tom Kent via Boost wrote:

When building for windows against the 1.85.0 nightly snapshot, I'm seeing an odd error with no info around it:

- type_erasure : building - url : building - wave : building

...patience... ...patience... ...patience... ...patience... ...patience... ...patience... ...patience... [errno 22] failed to scan file '': Invalid argument...found 39744 targets...

Upping the verbosity in B2, I was able to find that it appears to happen in filesystem:

bind -- boost\filesystem\detail\type_traits\disjunction.hpp: boost\filesystem\detail\type_traits\disjunction.hpp time -- boost\filesystem\detail\type_traits\disjunction.hpp: 2024-02-22 07:18:09.000000000 +0000 make -- boost\filesystem\detail\type_traits\disjunction.hpp make -- boost\filesystem\detail\type_traits\disjunction.hpp time -- boost\filesystem\detail\type_traits\disjunction.hpp: unbound made stable boost\filesystem\detail\type_traits\disjunction.hpp make -- boost\filesystem\detail\header.hpp make -- boost\filesystem\detail\header.hpp bind -- [errno 22] failed to scan file '': Invalid argument boost\filesystem\detail\header.hpp: boost\filesystem\detail\header.hpp time -- boost\filesystem\detail\header.hpp: 2024-02-22 07:18:09.000000000 +0000 make -- boost\filesystem\detail\header.hpp make -- boost\filesystem\detail\header.hpp time -- boost\filesystem\detail\header.hpp: unbound made stable boost\filesystem\detail\header.hpp

Anyone have ideas on what this can be? Why it doesn't show up more like a normal error?

It looks like the error happens in b2 while it is scanning headers for dependencies. I don't know b2 internals enough to understand why that happens and whether there is something specific in Boost.Filesystem to trigger it. In any case, boost\filesystem\detail\header.hpp is not new and hasn't changed for more than a year, so I don't think it's the header. I think, this should be reported to Boost.Build. https://github.com/bfgroup/b2/issues PS: I'm not seeing this locally or in CI: https://github.com/boostorg/filesystem/actions/runs/7970405370/job/217579379... https://github.com/boostorg/filesystem/actions/runs/7970405370/job/217579389... https://github.com/boostorg/filesystem/actions/runs/7970405370/job/217579392...