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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: 6283

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: 3292

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: 1593

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

causality ≠ correlation ≠ coincidence

Geoffg

Guru

Joined: 06/06/2011
Location: Australia
Posts: 3292

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: 1593

Posted: 12:46pm 22 Mar 2018

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Thanks!

causality ≠ correlation ≠ coincidence

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