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Subject: [Bug fortran/53086] [4.8 Regression] 416.gamess in SPEC CPU 2006 miscompiled
Date: Mon, 23 Apr 2012 16:30:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53086

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
   Last reconfirmed|                            |2012-04-23
         Resolution|INVALID                     |
     Ever Confirmed|0                           |1

--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> 2012-04-23 16:28:33 UTC ---
(In reply to comment #4)
> 
> From F2003 standard one finds on page 99:
> 
>    The form variable-name (explicit-shape-spec-list) declares variable-name
>    to have the DIMENSION attribute and specifies the array properties that
>    apply.
> 
> My interpretation is that
> 
>       COMMON /FMCOM / X(1)
> 
> declares X to have 1 element while
> 
>       PARAMETER (MEMSIZ=   80 000 000)
>       COMMON /FMCOM / X(MEMSIZ)
> 
> has 80000000 elements.  The above appears to be a common
> F77 idiom for "dynamic" memory management where the 
> programmer is abusing the storage association of element
> x(1).

I was told that it was allowed in F77.