[jiri-god]

CLAP rendering dereferenced getPlayHead() unconditionally, even though Processor permits no attached clock. A processor rendered before a clock is assigned, or after detachment, could therefore crash instead of processing audio.

Read the clock only when present. When no clock or position is available, continue processing with clap_process::transport == nullptr; available transport is passed as before.

A minimal test CLAP module exercises the actual provider/load/render path: it passes input audio through and reports transport presence/tempo on its other output. The regression covers initial absence, attachment, absent PositionInfo, detachment, repeated detached blocks and reattachment, checking audio continues and stale transport is not retained. No third-party plugins or audio hardware are required.

Validation: all 59 CTest suites pass on Apple Silicon macOS, RelWithDebInfo. With the original provider restored, the same regression fails with a memory access violation on the first clockless render. This branch is based independently on upstream d0226686; no private extensions.

Integration check: combined with #1211–#1215, all 63 CTest suites pass (3.63 s).

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}