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rave
Newbie

Joined: 24/02/2018
Location: United States
Posts: 28

Posted: 12:49am 22 Mar 2018

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Hi,

Thanks for the excellent MMBasic 4.5b implementation, which I'm running on a Colour Maximite project. So far things are working out and I am looking forward to contribute some MMBasic code soon.

I found an annoying bug in MMBasic 4.5b (I believe 4.5b is the latest version that I can flash to the CMM). I have a simple function IsMatch that matches strings in a certain way and returns 1 on success.

Here is my problem:

> ? IsMatch("a","a")
1
> ? IsMatch("a","(")
Error: Expected closing bracket
> ? IsMatch("a",")")
... the screen goes blank and the interpreter crashes ...

It appears that any string with a parenthesis in it that is used as an argument in a user-defined function causes an error or a crash

The problem is not caused by the IsMatch function, I tried different ones, here is an example:

function IsMatch(a$, b$)
IsMatch = a$ = left$(b$, len(a$))
end function

- Rob

TassyJim

Guru

Joined: 07/08/2011
Location: Australia
Posts: 6606

Posted: 01:42am 22 Mar 2018

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There is a V4.5C available from this thread:
https://www.thebackshed.com/forum/forum_posts.asp?TID=6772&PN=2&TPN=2
Halfway down the second page.

Jim

VK7JH
MMedit

Geoffg

Guru

Joined: 06/06/2011
Location: Australia
Posts: 3368

Posted: 02:25am 22 Mar 2018

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Yes, it is a bug. It only occurs in string constants so you could use a variable containing ")" or chr$(41). The same for "(".

Sorry to say that V4.5C does not fix it.

Geoff Graham - http://geoffg.net

twofingers

Guru

Joined: 02/06/2014
Location: Germany
Posts: 1772

Posted: 10:46am 22 Mar 2018

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@Geoff,
I guess for the TFT-Maximites and the Duinomites is no v4.5C available?
Michael

‚My name is Ozymandias, king of kings
Look on my works, ye Mighty, and despair!‘
Nothing beside remains. Round the decay
Of that colossal wreck, boundless and bare
The lone and ...

Geoffg

Guru

Joined: 06/06/2011
Location: Australia
Posts: 3368

Posted: 12:35pm 22 Mar 2018

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No, not at this time.

Geoff Graham - http://geoffg.net

twofingers

Guru

Joined: 02/06/2014
Location: Germany
Posts: 1772

Posted: 12:46pm 22 Mar 2018

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Thanks!

‚My name is Ozymandias, king of kings
Look on my works, ye Mighty, and despair!‘
Nothing beside remains. Round the decay
Of that colossal wreck, boundless and bare
The lone and ...

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