@AutoStatic: it's not to do with the number of plugins used in a session, but rather when it scans all the LV2 plugins when it first initializes.
@rncbc: You're going to enjoy this... The debug build doesn't exhibit this problem. Only the non-debug build. The limit according to the count provided by lv2ls seems to be 255. One thing that comes to mind is that lilv_world_add_plugin() complains about duplicate plugins in /usr/lib and /usr/lib64 since it scans both, and on a Gentoo system /usr/lib is a symlink to /usr/lib64. Perhaps there is an 8 bit limit somewhere to the total number of that type of error in the non-debug builds?
@AutoStatic: it's not to do with the number of plugins used in a session, but rather when it scans all the LV2 plugins when it first initializes.
@rncbc: You're going to enjoy this... The debug build doesn't exhibit this problem. Only the non-debug build. The limit according to the count provided by lv2ls seems to be 255. One thing that comes to mind is that lilv_world_add_plugin() complains about duplicate plugins in /usr/lib and /usr/lib64 since it scans both, and on a Gentoo system /usr/lib is a symlink to /usr/lib64. Perhaps there is an 8 bit limit somewhere to the total number of that type of error in the non-debug builds?