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Q37774: "Hit Any Key…" If CHAIN or RUN from Error Handler; BC /O

Article: Q37774
Product(s): See article
Version(s): 4.00b 4.50
Operating System(s): MS-DOS
Keyword(s): ENDUSER | buglist4.00b buglist4.50 B_BasicCom | mspl13_basic
Last Modified: 12-DEC-1989

When two programs, both compiled with BC /O/X, CHAIN or RUN between
one another, a "Hit any key to continue" error message is displayed if
the CHAIN or RUN occurs in an error-handler routine. This problem does
not occur if the programs are compiled to use the BASIC run-time
module (without /O).

Microsoft has confirmed this to be a problem in Microsoft QuickBASIC
Versions 4.00b and 4.50 (buglist4.00b, buglist4.50), and Microsoft
BASIC Compiler Versions 6.00 and 6.00b (buglist6.00 buglist6.00b) for
MS-DOS and OS/2. This problem was corrected in Microsoft BASIC PDS
Version 7.00 (fixlist7.00).

To work around this problem, use RESUME <label> to return program
control to a label that contains the CHAIN statement.

The following is a code example:

'==== Prog a ====
ON ERROR GOTO trap
ERROR 57
END
trap:
   PRINT "error in a"
   'uncomment the next line to get the programs to work
   'RESUME leave
leave:
 CHAIN "b"
 stop

'==== Prog b ====
ON ERROR GOTO trap
ERROR 57
END
trap:
   PRINT "error in b"
   'uncomment the next line to get the programs to work
   'RESUME leave
leave:
   CHAIN "a"
   stop

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