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/Include/pystate.h b/Include/pystate.h
index 4919d99..0681e65 100644
--- a/Include/pystate.h
+++ b/Include/pystate.h
@@ -61,6 +61,10 @@
struct _frame *frame;
int recursion_depth;
+ char overflowed; /* The stack has overflowed. Allow 50 more calls
+ to handle the runtime error. */
+ char recursion_critical; /* The current calls must not cause
+ a stack overflow. */
/* 'tracing' keeps track of the execution depth when tracing/profiling.
This is to prevent the actual trace/profile code from being recorded in
the trace/profile. */