add test for, and update comments for, old defined($1) oddity.
authorDave Mitchell <davem@fdisolutions.com>
Mon, 18 Jun 2007 00:00:30 +0000 (00:00 +0000)
committerDave Mitchell <davem@fdisolutions.com>
Mon, 18 Jun 2007 00:00:30 +0000 (00:00 +0000)
commit225593e1515f97126032fb4da0b1aafeb00e8e99
treed67af8c6bcd5c4a94aa6908fc4415e995bdd7659
parentb299c47c19f998a67478d8223c2faaac63ae623b
add test for, and update comments for, old defined($1) oddity.

Some code in regexec.c had a comment to the effect that without
this code, Dynaloader failed (this is back at 5.6.0). Replace the
comments with something more specific, and add a test for it
(basically without the code $1 is '' rather than undefined
sometimes).

p4raw-id: //depot/perl@31408
regexec.c
t/op/re_tests