Strange error 3

[Alan Hanson]

I have been having some problems with a control program I have been
writing. Running on my laptop (486dx2 66, dos 6.22, win 3.1, 8Mb ram)
I have no trouble running either from an exe or from inside powerbasic.
When I copy the exact same exe file to the desktop PC (pentium 200ish,
98se, 32Mb ram) I continually get an error.
From the error message it says that there is a return without gosub
error in line 22008. As it is impossible to get to line 22008 without
a gosub it has me quite puzzled. This line is part of a loop that displays
the current time and date every 0.45s.
I have quite a bit of information shoved into arrays and was wondering
if this could possibly be affecting the stack???
I can email a copy of the source code if anyone is interested in
having a look (its not real tidy).


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[Lance Edmonds]

It sounds like a memory corruption issue - the cause could in a seemingly unrelated section of your code that writes past an array boundary, bad inline assembler, incorrect use of pointers, a memory manager problem or something similar.

The 1st thing to do is add $ERROR ALL ON to the code and run it again... this enables alll runtime error testing (which is OFF by default).

One more idea: be sure there are no out-of-scope GOSUBS's or GOTO's - ie, a GOSUB or GOTO into the middle of another Sub/Function... this can cause all sorts of problems because the stack frame will not be initialized for that Sub/Function.

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Lance
PowerBASIC Support
mailto:[email protected][email protected]</A>