Re: Memory exhausted: error when match() function is called with

ram wrote:
> Hi All,
>
> I have the following small snippet of awk code
>
> function test(regexp)
> {
>     match($0, regexp)
> }
>
> {
>     test(": ");
>     test("=");
> }
>
> When I execute the above small snippet of code with a big file as
> input I get the following
> error:
>
> awk: /var/tmp/awk_test:4: (FILENAME=- FNR=5776) fatal: Memory
> exhausted: /: /
>
> Output of top command shows that the memory of awk process increases
> gradually.
> ( I am executing this command in UNIX).
>
> Any idea what is the problem ? and How to solve this?
>
> When I tried calling the test() function with the same parameter I did
> not see this error.
> Also, when I commented the match() function I did not see this error.
>
> So, It looks like their is a memory leak in match() function when it
> is called with two different
> regular expression. I may be wrong also.
>
> Thanks,
> Ram
>

You're probably right. I'm curious and it may provide you a workaround:
if you don't mind trying it, what happens when you do either of these:

1)
function test(foo) { regexp=foo; match($0, regexp) }
{
test(": ")
test("=")
}

2)
function test() { match($0, regexp) }
{
regexp=": "; test()
regexp="=";  test()
}

3)
{
regexp=": "; match($0, regexp)
regexp="=";  match($0, regexp)
}

4)
{
match($0, ": ")
match($0, "=")
}

Regards,

Ed.

Ed Morton wrote:

> ram wrote:
> 
>
> You're probably right. I'm curious and it may provide you a workaround:
> if you don't mind trying it, what happens when you do either of these:
>
> 1)
>     function test(foo) { regexp=foo; match($0, regexp) }
>     {
>         test(": ")
>         test("=")
>     }
>
> 2)
>     function test() { match($0, regexp) }
>     {
>         regexp=": "; test()
>         regexp="=";  test()
>     }
>
> 3)
>     {
>         regexp=": "; match($0, regexp)
>         regexp="=";  match($0, regexp)
>     }
>
> 4)
>     {
>         match($0, ": ")
>         match($0, "=")
>     }
>
> Regards,
>
>     Ed.

Oh, and 1 more:

5)
BEGIN{ regexp1=": "; regexp2="=" }
{
match($0, regexp1)
match($0, regexp2)
}

Regards,

Ed.