DOCERR: Code in Manual Incorrect: COMMON and Equivalance
ID: Q77574
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5.10 | 5.10
MS-DOS | OS/2
kbprg kbdocerr
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The information in this article applies to:
- Microsoft FORTRAN for MS-DOS, version 5.1
- Microsoft FORTRAN for OS/2, version 5.1
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The sample program on page 132 of Advanced Topics version 5.0, page 105
Advanced Topics version 5.1 is incorrect. The code is as follows:
integer a(10,20), b(20,30)
common /cba/a, /cbb/b
equivalence (a(10,20),b(1,1))
end
The ANSI standard states (p. 165 of REFERENCE manual):
An EQUIVALENCE statement cannot share memory between two different
common blocks or between elements of the same common block.
Since the program attempts to equivalence items in two different COMMON
blocks, the compiler generates the error:
error F2318: A, B : EQUIVALENCE : in different common blocks
Additional reference words: 5.10
KBCategory: kbprg kbdocerr
KBSubcategory: FORTLngIss
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Last Reviewed: July 18, 1995