Is there a single esoteric DSP in active use that supports C++20? This is the umpteenth time I've seen DSP's brought up in casual conversations about C/C++ standards, so I did a little digging:

Texas Instruments' compiler seems to be celebrating C++14 support: https://www.ti.com/tool/C6000-CGT

CrossCore Embedded Studio apparently supports C++11 if you pass a switch in requesting it, though this FAQ answer suggests the underlying standard library is still C++03: https://ez.analog.com/dsp/software-and-development-tools/cce...

Everything I've found CodeWarrior related suggests that it is C++03-only: https://community.nxp.com/pwmxy87654/attachments/pwmxy87654/...

Aside from that, from what I can tell, those esoteric architectures are being phased out in lieu of running DSP workloads on Cortex-M, which is just ARM.

I'd love it if someone who was more familiar with DSP workloads would chime in, but it really does seem that trying to be the language for all possible and potential architectures might not be the right play for C++ in 202x.

Besides, it's not like those old standards or compilers are going anywhere.