One more SvPV_const

p4raw-id: //depot/perl@24752

1 files changed, 1 insertions, 1 deletions

diff --git a/pp.c b/pp.c
index 8c50719196..4feb59d8f7 100644
--- a/pp.c
+++ b/pp.c
@@ -2358,7 +2358,7 @@ PP(pp_negate)
 	    SETn(-SvNV(sv));
 	else if (SvPOKp(sv)) {
 	    STRLEN len;
-	    char *s = SvPV(sv, len);
+	    const char *s = SvPV_const(sv, len);
 	    if (isIDFIRST(*s)) {
 		sv_setpvn(TARG, "-", 1);
 		sv_catsv(TARG, sv);