setrecursionlimit

[Nobody]

On Wed, 18 May 2016 09:19:25 -0700, Ned Batchelder wrote:

> Is there a way to know how large the C stack can grow,

Yes. For the main thread, getrlimit(RLIMIT_STACK). For other threads,
pthread_attr_getstacksize().

> and how much it will grow for each Python function call?

No.

Depending upon the interpreter implementation, the stack might not grow
at all in the case where a function written in Python calls another
function written in Python. Calling out into native code (which may then
call back into Python code) is bound to grow the thread by some amount.

While the interpreter could keep track of how much space is left on the
stack, there's no way of knowing in advance how much any given C function
will need. If there isn't enough, there is no robust way to recover from
the resulting segfault.