Perl V3 bug: repeated tests
Dennis Cottel
dennis at nosc.mil
Thu Oct 26 09:25:05 AEST 1989
There's a bug in Perl3.0, related, I think, to the new optimization
for repeated tests on the same variable. Things quit working in
mysterious ways if you have a construction like:
if ( $i = 1 ) {...}
if ( $i = 2 ) {...}
if ( $i = 3 ) {...}
if ( $i = 4 ) {...}
...
This breaks if you have 3 or more tests. You can get around the
problem by doing something like:
if ( $i = 1 ) {...}
if ( $i = 2 ) {...}
$kludge++;
if ( $i = 3 ) {...}
if ( $i = 4 ) {...}
...
to avoid having more than 2 tests in a row.
I have reported this to Larry Wall (actually to Larry's mail handling
program ;-).
Dennis Cottel Naval Ocean Systems Center, San Diego, CA 92152
(619) 553-1645 dennis at nosc.MIL sdcsvax!noscvax!dennis
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