Q43786: QB 4.00/4.00b Can Wrongly Assign User-TYPE Variable; 4.50 OK

Article: Q43786
Product(s): See article
Version(s): 4.00 4.00b
Operating System(s): MS-DOS
Keyword(s): ENDUSER | buglist4.00 buglist4.00b fixlist4.50 SR# S890117-41 | mspl13_basic
Last Modified: 27-APR-1989

In the program below, the QB.EXE editor (from QuickBASIC Versions 4.00
and 4.00b) fails to correctly assign a value to a variable of a
user-defined type (f.inx). This variable remains zero at all times.
The problem does not occur when the program is compiled into an .EXE.

Almost any change to the program corrects the error, such as renaming
the variable. It is difficult to find the same problem in a different
program.

Microsoft has confirmed this to be a problem in Versions 4.00 and
4.00b. This problem was corrected in QB.EXE from QuickBASIC Version
4.50.

Code Example

TYPE rectype
  a AS SINGLE
  inx AS INTEGER
END TYPE

DIM f AS rectype

f.a = 355
f.inx = 5

CLS
PRINT f.a
PRINT f.inx   ' this value will print out 0
END

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