Remove OA_DANGEROUS from match

OA_DANGEROUS indicates that temporary copies may need to be made in
list assignment, to handle things like:

($a, $b) = ($b, $a);

In other words, an op type is flagged with OA_DANGEROUS if its return
values could occur elsewhere on the stack.

pp_match pushes new mortals on to the stack in list context (or a
read-only boolean; read-only values don’t matter), so they can’t
occur elsewhere.  Hence it is not OA_DANGEROUS.

1 files changed, 1 insertions, 1 deletions

diff --git a/opcode.h b/opcode.h
index 350eed1081..4320304787 100644
--- a/opcode.h
+++ b/opcode.h
@@ -1771,7 +1771,7 @@ EXTCONST U32 PL_opargs[] = {
 	0x00001104,	/* regcmaybe */
 	0x00001104,	/* regcreset */
 	0x00001304,	/* regcomp */
-	0x00000540,	/* match */
+	0x00000500,	/* match */
 	0x00000504,	/* qr */
 	0x00001544,	/* subst */
 	0x00000344,	/* substcont */