Make identifiers str (not str8) objects throughout.
This affects the parser, various object implementations,
and all places that put identifiers into C string literals.
In testing, a number of crashes occurred as code would
fail when the recursion limit was reached (such as the
Unicode interning dictionary having key/value pairs where
key is not value). To solve these, I added an overflowed
flag, which allows for 50 more recursions after the
limit was reached and the exception was raised, and
a recursion_critical flag, which indicates that recursion
absolutely must be allowed, i.e. that a certain call
must not cause a stack overflow exception.
There are still some places where both str and str8 are
accepted as identifiers; these should eventually be
removed.
diff --git a/Python/pystate.c b/Python/pystate.c
index 086789d..1914ba8 100644
--- a/Python/pystate.c
+++ b/Python/pystate.c
@@ -167,6 +167,8 @@
tstate->frame = NULL;
tstate->recursion_depth = 0;
+ tstate->overflowed = 0;
+ tstate->recursion_critical = 0;
tstate->tracing = 0;
tstate->use_tracing = 0;
tstate->tick_counter = 0;