X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=pp_hot.c;h=3f85116a31603439adf925248170de4de84966a7;hb=48f7ee7a00a9cc3c53df2208f08bd3848df9a5b5;hp=dc5e3b6f16d837d1c3fb886614d99c02fbd65415;hpb=467f0320ba38aa93b099784d0a7bcd097f0d642c;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/pp_hot.c b/pp_hot.c
index dc5e3b6..3f85116 100644
--- a/pp_hot.c
+++ b/pp_hot.c
@@ -172,8 +172,12 @@ PP(pp_concat)
 		/* Take a copy since we're about to overwrite TARG */
 		olds = s = (U8*)savepvn((char*)s, len);
 	    }
-	    if (!SvOK(left) && SvTYPE(left) <= SVt_PVMG)
-		sv_setpv(left, "");	/* Suppress warning. */
+	    if (!SvOK(left) && SvTYPE(left) <= SVt_PVMG) {
+	        if (SvREADONLY(left))
+		    left = sv_2mortal(newSVsv(left));
+		else
+		    sv_setpv(left, "");	/* Suppress warning. */
+	    }
             l = (U8*)SvPV(left, targlen);
 	    left_utf |= DO_UTF8(left);
             if (TARG != left)
@@ -1339,7 +1343,7 @@ Perl_do_readline(pTHX)
 		        }
 		        else {
 		           PerlIO_rewind(tmpfp);
-		           IoTYPE(io) = '<';
+		           IoTYPE(io) = IoTYPE_RDONLY;
 		           IoIFP(io) = fp = tmpfp;
 		           IoFLAGS(io) &= ~IOf_UNTAINT;  /* maybe redundant */
 		        }
@@ -1393,7 +1397,7 @@ Perl_do_readline(pTHX)
 	else if (type == OP_GLOB)
 	    SP--;
 	else if (ckWARN(WARN_IO)	/* stdout/stderr or other write fh */
-		 && (IoTYPE(io) == '>' || fp == PerlIO_stdout()
+		 && (IoTYPE(io) == IoTYPE_WRONLY || fp == PerlIO_stdout()
 		     || fp == PerlIO_stderr()))
 	{
 	    /* integrate with report_evil_fh()? */
@@ -1412,7 +1416,8 @@ Perl_do_readline(pTHX)
 	}
     }
     if (!fp) {
-	if (ckWARN2(WARN_GLOB,WARN_CLOSED) && io && !(IoFLAGS(io) & IOf_START)) {
+	if (ckWARN2(WARN_GLOB, WARN_CLOSED)
+		&& (!io || !(IoFLAGS(io) & IOf_START))) {
 	    if (type == OP_GLOB)
 		Perl_warner(aTHX_ WARN_GLOB,
 			    "glob failed (can't start child: %s)",