string do and require don't execute INIT and CHECK blocks

[perl5.git] / pp_sys.c

diff --git a/pp_sys.c b/pp_sys.c
index f47395b..c3d0505 100644 (file)
--- a/pp_sys.c
+++ b/pp_sys.c
@@ -826,7 +826,7 @@ PP(pp_tie)
            break;
        case SVt_PVGV:
        case SVt_PVLV:
-           if (isGV_with_GP(varsv)) {
+           if (isGV_with_GP(varsv) && !SvFAKE(varsv)) {
                methname = "TIEHANDLE";
                how = PERL_MAGIC_tiedscalar;
                /* For tied filehandles, we apply tiedscalar magic to the IO
@@ -903,7 +903,7 @@ PP(pp_untie)
     const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
                ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
 
-    if (isGV_with_GP(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
+    if (isGV_with_GP(sv) && !SvFAKE(sv) && !(sv = MUTABLE_SV(GvIOp(sv))))
        RETPUSHYES;
 
     if ((mg = SvTIED_mg(sv, how))) {
@@ -1655,6 +1655,9 @@ PP(pp_sysread)
                                  (struct sockaddr *)namebuf, &bufsize);
        if (count < 0)
            RETPUSHUNDEF;
+       /* MSG_TRUNC can give oversized count; quietly lose it */
+       if (count > length)
+           count = length;
 #ifdef EPOC
         /* Bogus return without padding */
        bufsize = sizeof (struct sockaddr_in);