[Bug fortran/24406] EQUIVALENCE broken in 32-bit code with optimization -O2

["tobi at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #6 from tobi at gcc dot gnu dot org  2005-11-01 20:20 -------
(In reply to comment #3)
> The code is illegal, and therefore gfortran can do anything
> it wants (including start WW III).  
> 
> (1) rteps is never defined, so it can't be reference in the IF
>     statement.
> 
> (2) Even if rteps was defined prior to the assignments of irt(1) and
>     irt(2), rteps would become undefined via 14.7.6(1) of the standard.
> 
> (3) The use of BOZ literal constants here is nonstandard although
>     gfortran may permit its use in this manner (I haven't checked).

Using equivalences this way is a common extension, and we actually use this in
a number of testcases ourselves, so if we decided to start WWIII in this case,
we probably wouldn't live much longer than our testsuite runs take.


-- 

tobi at gcc dot gnu dot org changed:

           What    |Removed                     |Added
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                 CC|                            |tobi at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24406