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Man Pages


Manual Reference Pages  -  TCL_SETRECURSIONLIMIT (3)

NAME

Tcl_SetRecursionLimit - set maximum allowable nesting depth in interpreter

CONTENTS

Synopsis
Arguments
Description
Keywords

SYNOPSIS

#include <tcl.h>

int Tcl_SetRecursionLimit(interp, depth)

ARGUMENTS


.TP 15 Tcl_Interp *interp (in)
Tcl_Interp*interp Tcl_Interp Interpreter whose recursion limit is to be set. Must be greater than zero.
.TP 15 int depth (in)
int       depth int New limit for nested calls to Tcl_Eval for interp.

   








\L’|0u-1v’\l’75u+3n_’\L’0u+1v-0u’\l’|0u-1.5n_’



\L’|0u-1v’\L’0u+1v-0u’\l’|0u-1.5n_’





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
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Tcl TCL_SETRECURSIONLIMIT (3) 7.0

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