Where can I find the source of libsystem_c.dylib?

Question

I have a strange line in my stacktrace that I want to investigate further:

12  libsystem_c.dylib               0x3aa272dc free + 168

If I understand correctly, libsystem_c is C standard library. Is the version used in the iOS open-sourced? Where can I get that source?

Answer 1

To be more specific, I think it is hosted here: https://opensource.apple.com/source/Libc/

Answer 2

For someone who may need answer

You can find OSX sources at https://opensource.apple.com/