Tcl_SetRecursionLimit(3) Tcl Library Procedures Tcl_SetRecursionLimit(3)

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NAME

Tcl_SetRecursionLimit - set maximum allowable nesting depth in
interpreter

SYNOPSIS

#include <tcl.h>

int
Tcl_SetRecursionLimit(interp, depth)

ARGUMENTS

Tcl_Interp *interp (in) Interpreter whose recursion limit is
to be set. Must be greater than
zero.

int depth (in) New limit for nested calls to
Tcl_Eval for interp.
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DESCRIPTION

At any given time Tcl enforces a limit on the number of recursive
calls that may be active for Tcl_Eval and related procedures such as
Tcl_GlobalEval. Any call to Tcl_Eval that exceeds this depth is
aborted with an error. By default the recursion limit is 1000.

Tcl_SetRecursionLimit may be used to change the maximum allowable
nesting depth for an interpreter. The depth argument specifies a new
limit for interp, and Tcl_SetRecursionLimit returns the old limit.
To read out the old limit without modifying it, invoke
Tcl_SetRecursionLimit with depth equal to 0.

The Tcl_SetRecursionLimit only sets the size of the Tcl call stack:
it cannot by itself prevent stack overflows on the C stack being used
by the application. If your machine has a limit on the size of the C
stack, you may get stack overflows before reaching the limit set by
Tcl_SetRecursionLimit. If this happens, see if there is a mechanism
in your system for increasing the maximum size of the C stack.

KEYWORDS

nesting depth, recursion

Tcl 7.0 Tcl_SetRecursionLimit(3)