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A naughty function call

From: Wolfgang Laun
Subject: A naughty function call
Date: Mon, 19 Jul 2021 08:51:27 +0200

function srep(n, s){
    n *= length(s)
    if( n == 0 ) return ""
    while( length(s) < n ) {
        s = s s;
    return substr( s, 1, n );
BEGIN { x = srep( 200000000, "abc" ); } # to measure performance

On my Linux box running GNU Awk 5.0.1, the execution fails:
$ gawk -f srepDoubl.awk

In this simple example, it is immediately clear to the programmer that
memory allocation fails. But is this the intended diagnostic? I think it
might be a little more user-friendly.


PS: It seems preferable to measure the performance using repeated
executions of the function call with *reasonable *parameter combinations.

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