Writing to print_buffer corrupts memory

[mahkoh]

When the declaration of print_buffer is moved around a bit and print_buffer is resized appropriately (20 bytes for me), cmus crashes with a segfault.

[flyingmutant]

Can you please provide a backtrace, or more detailed steps to reproduce the issue?

[mahkoh]

https://gist.github.com/mahkoh/6461733b07c0a10e964e

It's clear what happens: format_str and other functions don't take a buffer size argument. This is not an issue on my system because format_str writes at most 4*{width of screen} bytes. But it should be fixed anyway.

[pgaskin]

Is this still an issue?