[issue28858] Fastcall uses more C stack

[STINNER Victor]

New submission from STINNER Victor:

Serhiy Storchaka reported that Python 3.6 crashs earlier than Python 3.5 on calling json.dumps() when sys.setrecursionlimit() is increased.

I tested the script he wrote. Results on Python built in release mode:

Python 3.7:

...
58100 116204
Segmentation fault (core dumped)

Python 3.6:

...
74800 149604
Segmentation fault (core dumped)

Python 3.5:

...
74700 149404
Segmentation fault (core dumped)

Oh, it seems like Python 3.7 does crash earlier.

But to be clear, it's hard to control the usage of the C stack.

----------
files: stack_overflow.py
messages: 282228
nosy: haypo
priority: normal
severity: normal
status: open
title: Fastcall uses more C stack
versions: Python 3.7
Added file: http://bugs.python.org/file45731/stack_overflow.py

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue28858>
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