RodBird Oct 29, 2015

Bugs and Gotchas

-	Unary minus is not supported, use 0-x	Gotcha
=	Comparing two floats x.x y.y is problematic	Gotcha
!insert	Texteditor !insert command requires a locally scoped string	Bug
%	If this appears in front of a using() number its too big to fit	Info
*	A missing * in a maths statement is not caught, always insert *	Bug
,	Missing , are sometimes not reported, check , are inserted	Bug
Beep	Beep is not supported by modern BIOS, use Playwave instead	Info
Box graphics	Box draws one pixel short	Info
Branch labels	A [Branch Label] should not head up another [Branch Label]	Bug
Button	Button anchor values result in misplaced buttons	Bug
Calldll	Calldll return types USHORT and WORD are broken	Bug
Close	Random file's close command cannot use a Handle$ variable	Bug
Data	If you precede the data statement with line numbers it will fail	Bug
Error message	Attempted to kill non-existant file	Fast FAQ
Error message	Stack Overflow	Fast FAQ
Error message	Collection is empty	Fast FAQ
Error message	Argument must be a collection	Fast FAQ
Error message	Index (n) is outside collection bounds	Fast FAQ
Error message	Invalid Branch Label [xyz]	Fast FAQ
Error message	Float invalid op	Fast FAQ
Error message	System Primitive Failed	Fast FAQ
Error message	File is literally invisible	Fast FAQ
Error message	Error Opening file	Fast FAQ
Error message	File System Access Denied	Fast FAQ
Error message	Problem creating file	Fast FAQ
Error message	OS Error cannot find file	Fast FAQ
Error message	Key is missing	Fast FAQ
Error message	String can't hold string	Fast FAQ
Error message	A non-continuable protection violation has occurred	Fast FAQ
Error message	IsEmpty	Fast FAQ
Field	Random file's field command cannot use a Handle$ variable	Bug
File Association	Associating liberty.exe to .bas files needs manual fix on upgrade	Info
For Next	Incorrectly allows a string variable as a loop counter	Bug
For Next	Do not use a global variable as a loop counter	Info
For Next	Don't jump out a for next loop, leave using exit for	Gotcha
For Next	A STRUCT variable cannot be used as a loop counter	Info
Function	Arrays are global by default and availbale inside functions	http://libertybasicbugs.wikispaces.com/Arrays+Not+Passed+to+Subs
Function	Global variables need not be passed to functions	http://libertybasicbugs.wikispaces.com/FUNCTION+with+GLOBAL+parameter
Get	Random file's get command cannot use a Handle$ variable	http://libertybasicbugs.wikispaces.com/Handle+variables+do+not+work+with+RANDOM+files
Handle$	Handle$ variables do not work with RAF files	http://libertybasicbugs.wikispaces.com/Handle+variables+do+not+work+with+RANDOM+files
Horizscrollbar	Large graphics need special preparation	http://libertybasicbugs.wikispaces.com/Scrollbars-Graphics-Distorted
IDE	IDE-editor - Undo feature does not work + some quirks	http://libertybasicbugs.wikispaces.com/Environment
Inkey$	The help file reference listing Virtual Key Codes is erroneous	http://libertybasicbugs.wikispaces.com/HELPFILE-virtual+key+codes
Input var$;val	Input cannot use a var$ as a prompt, it needs to be literal	http://libertybasicbugs.wikispaces.com/INPUT-variable+as+prompt
Inputcsv	Does not deal with embeded quotes correctly	http://libertybasicbugs.wikispaces.com/INPUTCSV+does+not+accept+embedded+quotes
Line graphics	Line and Lineto draw one pixel short, just set the last pixel	http://libertybasicbugs.wikispaces.com/Line+and+Box+draw+one+pixel+short
Listbox	Changes to font size after creation breaks scroll range	http://libertybasicbugs.wikispaces.com/Listbox+horizontal+scroll+range
lof()	Lof() function reports incorrect files size for files > 4Gb	http://libertybasicbugs.wikispaces.com/lof%28%29+reports+wrong+file+size+for+large+files
Mainwin	Mainwin permanently alters width, reset to 80 using preferences	http://libertybasicbugs.wikispaces.com/MAINWIN+changes+preferences
Mid$()	Mid$() reads a string fragment, it cannot assign a string fragment	http://libertybasicbugs.wikispaces.com/MID-can+not+assign+value
middleButtonMove	middleButtonMove event is broken	http://libertybasicbugs.wikispaces.com/middleButtonMove+event
Pie graphics	Pie and Piefilled drawing distorted	http://libertybasicbugs.wikispaces.com/Pie+and+Piefilled+drawing+distorted
Piefilled graphics	Pie and Piefilled drawing distorted	http://libertybasicbugs.wikispaces.com/Pie+and+Piefilled+drawing+distorted
Printerdialog	Printerdialog is broken an API alternative is available	http://libertybasicbugs.wikispaces.com/PRINTERDIALOG-broken+for+XP+and+higher
Prompt	If you use prompt when a timer is running Liberty will crash	http://libertybasicbugs.wikispaces.com/Timer+and+Prompt+conflict
Put	Random file's put command cannot use a Handle$ variable	http://libertybasicbugs.wikispaces.com/Handle+variables+do+not+work+with+RANDOM+files
Put	Attempting to write to record 0 erronously creates a 4Gb file	http://libertybasicbugs.wikispaces.com/PUT+%E2%80%93+attempt+to+write+record+0+writes+4Gb+file
Redim	Redim acts on an existing array a(x,y) x,y cannot change	http://libertybasicbugs.wikispaces.com/Redim++fails+to+redimension+an+array
Rnd(0)	Rnd(0) has a slight bias, improved routines are available	http://libertybasicbugs.wikispaces.com/Improved+RND%28%29+function
Sort	Sort a(),r,c,col if r is less than c sorting breaks above col is >r	http://libertybasicbugs.wikispaces.com/Sort
Sort	Sorting is not in ASCII order it is dictionary order but flawed	http://libertybasicbugs.wikispaces.com/SORT-fails+to+provide+dictionary+order
STRUCT	STRUCT keyword is case sensitive	http://libertybasicbugs.wikispaces.com/STRUCT-keyword+is+case+sensitive
STRUCT double	STRUCT member of type double crashes if you assign and integer	http://libertybasicbugs.wikispaces.com/STRUCT-DOUBLE+crashes+then+assigning+integer
STRUCT Variable	STRUCT variable cannot be used as a For loop counter	http://libertybasicbugs.wikispaces.com/Structure+member+cannot+be+used+as+FOR+variable
Sub	Arrays are global by default and available inside Subs	http://libertybasicbugs.wikispaces.com/Arrays+Not+Passed+to+Subs
Sub	Global variables need not be passed to Subs	http://libertybasicbugs.wikispaces.com/FUNCTION+with+GLOBAL+parameter
Texteditor	The !insert command must use a locally scoped string	http://libertybasicbugs.wikispaces.com/TEXTEDITOR+%21insert
Texteditor	The undo feature is broken	http://libertybasicbugs.wikispaces.com/TEXTEDITOR+-+Undo+feature+doesn%27t+work
Time$()	Time$() arguments are case sensitive, lower case	http://libertybasicbugs.wikispaces.com/TIME-arguments+are+case+sensitive
Timer	If you use prompt when a timer is running Liberty will crash	http://libertybasicbugs.wikispaces.com/Timer+and+Prompt+conflict
Timer	If a timer is set you must consider where the scope is when it fires	http://libertybasicbugs.wikispaces.com/TIMER-sub+as+event+handler
Timer	Timer events repeat, you must turn them off asap	FastFAQ
Timer	Only a timer encased entirely within a sub will work	FastFAQ
Trapclose	Trapclose is broken for windows of type text	http://libertybasicbugs.wikispaces.com/TRAPCLOSE+does+not+work+correctly+in+text+window
Using	Using is accurate to 16 digits, beyond that is garbage	http://libertybasicbugs.wikispaces.com/USING+loses+accuracy+after+16+digits
Using()	If a % appears the number is too big to fit in the format	http://lbpe.wikispaces.com/FastFAQ#Fast FAQ:-Using():
Vertscrollbar	Large graphics need special preparation	http://libertybasicbugs.wikispaces.com/Scrollbars-Graphics-Distorted
Virtual Key Code	The help file reference listing Virtual Key Codes is erroneous	http://libertybasicbugs.wikispaces.com/HELPFILE-virtual+key+codes
Window type Dialog	Dialog windows may position incorrectly if DPI is not 96	http://libertybasicbugs.wikispaces.com/DIALOG-wrong+position
Window type Text	Trapclose is broken for windows of type text	http://libertybasicbugs.wikispaces.com/TRAPCLOSE+does+not+work+correctly+in+text+window

Bugs and Gotchas