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-rw-r--r--pp_ctl.c7
-rwxr-xr-xt/op/range.t6
2 files changed, 11 insertions, 2 deletions
diff --git a/pp_ctl.c b/pp_ctl.c
index 07069cad4b..a482489f79 100644
--- a/pp_ctl.c
+++ b/pp_ctl.c
@@ -943,10 +943,15 @@ PP(pp_flop)
if (SvGMAGICAL(right))
mg_get(right);
+ /* This code tries to decide if "$left .. $right" should use the
+ magical string increment, or if the range is numeric (we make
+ an exception for .."0" [#18165]). AMS 20021031. */
+
if (SvNIOKp(left) || !SvPOKp(left) ||
SvNIOKp(right) || !SvPOKp(right) ||
(looks_like_number(left) && *SvPVX(left) != '0' &&
- looks_like_number(right) && *SvPVX(right) != '0'))
+ looks_like_number(right) && (*SvPVX(right) != '0' ||
+ SvCUR(right) == 1)))
{
if (SvNV(left) < IV_MIN || SvNV(right) > IV_MAX)
DIE(aTHX_ "Range iterator outside integer range");
diff --git a/t/op/range.t b/t/op/range.t
index e8aecf5fc9..862e64d103 100755
--- a/t/op/range.t
+++ b/t/op/range.t
@@ -1,6 +1,6 @@
#!./perl
-print "1..15\n";
+print "1..16\n";
print join(':',1..5) eq '1:2:3:4:5' ? "ok 1\n" : "not ok 1\n";
@@ -73,3 +73,7 @@ for my $x ("0"..-1) {
print "not ";
}
print "ok 15\n";
+
+# [#18165] Should allow "-4".."0", broken by #4730. (AMS 20021031)
+print "not " unless 5 == (() = "-4".."0");
+print "ok 16\n";