h2ph: more evilness in the form of Linux inline assembler.

[perl5.git] / pp_sys.c

diff --git a/pp_sys.c b/pp_sys.c
index 0183325..200ed94 100644 (file)
--- a/pp_sys.c
+++ b/pp_sys.c
@@ -173,6 +173,8 @@ static char zero_but_true[ZBTLEN + 1] = "0 but true";
 #  define FD_CLOEXEC 1         /* NeXT needs this */
 #endif
 
+#include "reentr.h"
+
 #undef PERL_EFF_ACCESS_R_OK    /* EFFective uid/gid ACCESS R_OK */
 #undef PERL_EFF_ACCESS_W_OK
 #undef PERL_EFF_ACCESS_X_OK
@@ -321,10 +323,13 @@ PP(pp_backtick)
                ;
        }
        else if (gimme == G_SCALAR) {
+           SV *oldrs = PL_rs;
+           PL_rs = &PL_sv_undef;
            sv_setpv(TARG, ""); /* note that this preserves previous buffer */
            while (sv_gets(TARG, fp, SvCUR(TARG)) != Nullch)
                /*SUPPRESS 530*/
                ;
+           PL_rs = oldrs;
            XPUSHs(TARG);
            SvTAINTED_on(TARG);
        }
@@ -605,6 +610,7 @@ PP(pp_pipe_op)
 
     IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
     IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
+    IoOFP(rstio) = IoIFP(rstio);
     IoIFP(wstio) = IoOFP(wstio);
     IoTYPE(rstio) = IoTYPE_RDONLY;
     IoTYPE(wstio) = IoTYPE_WRONLY;
@@ -822,11 +828,11 @@ PP(pp_tie)
        sv_unmagic(varsv, how);
        /* Croak if a self-tie on an aggregate is attempted. */
        if (varsv == SvRV(sv) &&
-           (SvTYPE(sv) == SVt_PVAV ||
-            SvTYPE(sv) == SVt_PVHV))
+           (SvTYPE(varsv) == SVt_PVAV ||
+            SvTYPE(varsv) == SVt_PVHV))
            Perl_croak(aTHX_
                       "Self-ties of arrays and hashes are not supported");
-       sv_magic(varsv, sv, how, Nullch, 0);
+       sv_magic(varsv, (SvRV(sv) == varsv ? Nullsv : sv), how, Nullch, 0);
     }
     LEAVE;
     SP = PL_stack_base + markoff;
@@ -2178,9 +2184,6 @@ PP(pp_ioctl)
 #else
        retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
 #endif
-#else
-       DIE(aTHX_ "fcntl is not implemented");
-#endif
 
     if (SvPOK(argsv)) {
        if (s[SvCUR(argsv)] != 17)
@@ -2199,6 +2202,10 @@ PP(pp_ioctl)
        PUSHp(zero_but_true, ZBTLEN);
     }
     RETURN;
+
+#else
+    DIE(aTHX_ "fcntl is not implemented");
+#endif
 }
 
 PP(pp_flock)