Make the "uninit variable" warning to say "concat or string"

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

diff --git a/doio.c b/doio.c
index 0247cb9..19f7861 100644 (file)
--- a/doio.c
+++ b/doio.c
@@ -476,11 +476,13 @@ Perl_do_open9(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
            SV *sv;
 
            PerlLIO_dup2(PerlIO_fileno(fp), fd);
+           LOCK_FDPID_MUTEX;
            sv = *av_fetch(PL_fdpid,PerlIO_fileno(fp),TRUE);
            (void)SvUPGRADE(sv, SVt_IV);
            pid = SvIVX(sv);
            SvIVX(sv) = 0;
            sv = *av_fetch(PL_fdpid,fd,TRUE);
+           UNLOCK_FDPID_MUTEX;
            (void)SvUPGRADE(sv, SVt_IV);
            SvIVX(sv) = pid;
            if (!was_fdopen)
@@ -1915,6 +1917,9 @@ Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
 
     id = SvIVx(*++mark);
     mstr = *++mark;
+    /* suppress warning when reading into undef var --jhi */
+    if (! SvOK(mstr))
+       sv_setpvn(mstr, "", 0);
     msize = SvIVx(*++mark);
     mtype = (long)SvIVx(*++mark);
     flags = SvIVx(*++mark);
@@ -1926,6 +1931,10 @@ Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
     if (ret >= 0) {
        SvCUR_set(mstr, sizeof(long)+ret);
        *SvEND(mstr) = '\0';
+#ifndef INCOMPLETE_TAINTS
+       /* who knows who has been playing with this message? */
+       SvTAINTED_on(mstr);
+#endif
     }
     return ret;
 #else