[habitue]

I mean C89 has no support, it's not getting an update or a bugfix, the standard is what it is. So if vendor support is your overriding concern, you should be constantly updating your software to LTS versions.

I meant support in terms of there's an active community of people using the language and building things with it. It's not going to die as a language like Algol 68 or Pascal.

[leecommamichael]

C89 still has an active community of people using the language and building things with it.

In addition to this, its existence and validity is still relied on by basically every other language via standard library, transient dependency, or calling convention. Heck, practically every C++ project probably depends on it.

The Linux Kernel, ffmpeg, SQLite, curl and many others chose C89 and often consider using C99, but most do not. Each of those projects also write at-length via newsletter or blog as to why they’re still not quite ready to update (and sometimes why they are.)

[uecker]

The Linux kernel and ffmpeg require C11.

[mahalex]

Is there an active community of people using Python 2 and building things with it? Meanwhile, there are plenty of actively maintained compilers for C89.

[unclad5968]

I have two different compilers that implement C89 on my computer right now and I know of at least one other. How much support do you require before you consider something supported?