[perl #23769] Unicode regex broken on simple example

[perl5.git] / pp_hot.c

diff --git a/pp_hot.c b/pp_hot.c
index 0851ab8..0ad2fcf 100644 (file)
--- a/pp_hot.c
+++ b/pp_hot.c
@@ -1593,6 +1593,17 @@ Perl_do_readline(pTHX)
                (void)POPs;             /* Unmatched wildcard?  Chuck it... */
                continue;
            }
+       } else if (SvUTF8(sv)) { /* OP_READLINE, OP_RCATLINE */
+            U8 *s = (U8*)SvPVX(sv) + offset;
+            STRLEN len = SvCUR(sv) - offset;
+            U8 *f;
+            
+            if (ckWARN(WARN_UTF8) &&
+                !Perl_is_utf8_string_loc(aTHX_ s, len, &f))
+                 /* Emulate :encoding(utf8) warning in the same case. */
+                 Perl_warner(aTHX_ packWARN(WARN_UTF8),
+                             "utf8 \"\\x%02X\" does not map to Unicode",
+                             f < (U8*)SvEND(sv) ? *f : 0);
        }
        if (gimme == G_ARRAY) {
            if (SvLEN(sv) - SvCUR(sv) > 20) {