hi Sergey,

thanks for confirming. I have addded one line to your code, an #undefine before the vartype()

release aa, a

#define	ALINEDEFINED aa = aa

a=1

#define aa a

ALINEDEFINED
* The next two line should display the same
? [ALINEDEFINED]	&& aa = a  - Bug
? [aa = aa]		&& a = a   - correct

#undefine aa
?vartype(aa), 'should be U', '  Error'

&& this is wrong also

release aa, a

#define	ALINEDEFINED aa = m.aa

a=1

#define aa a

ALINEDEFINED
* The next two line should display the same
? [ALINEDEFINED]	&& aa = a  - Bug
? [aa = aa]		&& a = a   - correct

#undefine aa

?vartype(aa), 'should be U', '  Error'

&& this is ok
&& strange: the m. prefix on the left side where you do not need it, unless of course

release aa, a

#define	ALINEDEFINED m.aa = m.aa

a=1

#define aa a

ALINEDEFINED
* The next two line should display the same
? [ALINEDEFINED]	&& aa = a  - Bug
? [aa = aa]		&& a = a   - correct

#undefine aa

?vartype(aa), 'should be U', '  OK

>Hi Gregory,
>
>I think you found a bug that still exist in VFP9. See code below

CLEAR
>release aa
>#define	ALINEDEFINED aa = aa
>a=1
>#define aa a
>ALINEDEFINED
>* The next two line should display the same
>? [ALINEDEFINED]	&& aa = a  - Bug
>? [aa = aa]		&& a = a   - correct
>?vartype(aa), 'should be U', '  Error'
>

>
>>
>>Anyone can reproduce / explain the code below ?
>>
><snip>