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25 lines
671 B
25 lines
671 B
=proto
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void duk_require_stack(duk_context *ctx, unsigned int extra);
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=summary
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<p>Like <code><a href="#duk_check_stack">duk_check_stack()</a></code> but an
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error is thrown if the value stack needs to be reallocated and that
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reallocation fails.</p>
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<p>As a general rule, callers should use this function to reserve more
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stack space. If value stack cannot be extended, there is almost never a
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useful recovery strategy except to throw an error and unwind.</p>
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=example
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int nargs;
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nargs = duk_get_top(ctx); /* number or arguments */
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/* reserve space for one temporary for each input argument */
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duk_require_stack(ctx, nargs * 2);
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=tags
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stack
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=seealso
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duk_check_stack
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