Race condition fix in threads.pm

[p5sagit/p5-mst-13.2.git] / pp.c

diff --git a/pp.c b/pp.c
index 4c5c815..0c9ef63 100644 (file)
--- a/pp.c
+++ b/pp.c
@@ -644,7 +644,7 @@ PP(pp_study)
     }
     s = (unsigned char*)(SvPV(sv, len));
     pos = len;
-    if (pos <= 0 || !SvPOK(sv)) {
+    if (pos <= 0 || !SvPOK(sv) || SvUTF8(sv)) {
        /* No point in studying a zero length string, and not safe to study
           anything that doesn't appear to be a simple scalar (and hence might
           change between now and when the regexp engine runs without our set