[inseparable changes from match from perl-5.003_90 to perl-5.003_91]

 BUILD PROCESS

Subject: Sanity check linking with $libs
Date: Tue, 25 Feb 1997 14:13:45 -0500 (EST)
From: Andy Dougherty <doughera@fractal.phys.lafayette.edu>
Files: Configure
Msg-ID: <Pine.SOL.3.95q.970225221634.2486A-100000@fractal.lafayette.edu>

    (applied based on p5p patch as commit 5c37e92e59bb92e49d5a21017cd6dc066a28ddea)

Subject: Flush stdout when printing $randbits guess
From: Chip Salzenberg <chip@perl.com>
Files: Configure

Subject: Configure changes for Irix nm
From: Helmut Jarausch <helmutjarausch@unknown>
Files: Configure

 CORE LANGUAGE CHANGES

Subject: Fix perl_call_*() when !G_EVAL
Date: Tue, 25 Feb 1997 02:25:56 -0500
From: Gurusamy Sarathy <gsar@engin.umich.edu>
Files: MANIFEST gv.c interp.sym perl.c perl.h pp_ctl.c pp_sys.c t/op/runlevel.t
Msg-ID: <199702250725.CAA09192@aatma.engin.umich.edu>, <199702251925.OAA15498@aatma.engin.umich.edu>, <199702252200.RAA16853@aatma.engin.umich.edu>

    (applied based on p5p patch as commits 40f788c454d994616342c409de5b5d181ad9b8af, and 907a881cde89c56bc61d3f314c0efb8754ca472a, 20efc0829f6564c44574762adb07e8865bc14026)

Subject: Fix taint tests for writeable dirs in $ENV{PATH}
From: Chip Salzenberg <chip@perl.com>
Files: mg.c mg.h pod/perlsec.pod taint.c

Subject: Forbid tainted parameters for truncate()
From: Chip Salzenberg <chip@perl.com>
Files: pp_sys.c

Subject: Don't taint magic hash keys unnecessarily
Date: Fri, 28 Feb 1997 02:11:26 -0500 (EST)
From: Charles Bailey <bailey@HMIVAX.HUMGEN.UPENN.EDU>
Files: hv.c

    private-msgid: <01IFXL9TY74Y00661G@hmivax.humgen.upenn.edu>

 CORE PORTABILITY

Subject: VMS patches post _90
Date: Fri, 28 Feb 1997 15:26:33 -0500 (EST)
From: Charles Bailey <bailey@HMIVAX.HUMGEN.UPENN.EDU>
Files: doio.c mg.c perl.h pp_hot.c t/op/rand.t t/op/taint.t taint.c vms/descrip.mms vms/vms.c

    private-msgid: <01IFYDE5ZT7O005A53@hmivax.humgen.upenn.edu>

Subject: Fix taint check in system() and exec() under VMS and OS/2
From: Chip Salzenberg <chip@perl.com>
Files: pp_sys.c

Subject: If _XOPEN_VERSION >= 4, socket length parameters are size_t
From: Michael H. Moran <mhm@austin.ibm.com>
Files: perl.h pp_sys.c

Subject: Make dooneliner() compile again
From: Chip Salzenberg <chip@perl.com>
Files: pp_sys.c

 DOCUMENTATION

Subject: Move ENVIRONMENT from perl.pod to perlrun.pod
From: Chip Salzenberg <chip@perl.com>
Files: pod/perl.pod pod/perlrun.pod

Subject: Describe PERL_DEBUG_MSTATS in perlrun.pod
From: Nat <gnat@frii.com>
Files: pod/perlrun.pod

Subject: Fix references to perlbug
From: Chip Salzenberg <chip@perl.com>
Files: pod/perl.pod pod/perldelta.pod pod/perllocale.pod pod/perltoc.pod

 OTHER CORE CHANGES

Subject: Short-circuit duplicate study() calls
From: Chip Salzenberg <chip@perl.com>
Files: pp.c

Subject: Call sv_set[iu]v() with [IU]V parameter, not [IU]32
From: Chip Salzenberg <chip@perl.com>
Files: perl.c pp.c pp_sys.c toke.c util.c

Subject: Clean up and document API for hashes
Date: Tue, 25 Feb 1997 13:24:02 -0500
From: Gurusamy Sarathy <gsar@engin.umich.edu>
Files: hv.c hv.h pod/perldelta.pod pod/perlguts.pod
Msg-ID: <199702251824.NAA14859@aatma.engin.umich.edu>

    (applied based on p5p patch as commit a61fe43df197fcc70e6f310c06ee17d52b606c45)

Subject: pp_undef was not always freeing memory
Date: Thu, 27 Feb 1997 01:53:51 -0500 (EST)
From: Ilya Zakharevich <ilya@math.ohio-state.edu>
Files: pp.c
Msg-ID: <199702270653.BAA13949@monk.mps.ohio-state.edu>

    (applied based on p5p patch as commit 1da885048b65b5be1bd3077c6fc45f92c567e1b5)

Subject: Don't examine rx->exec_tainted if pregexec() fails
From: Chip Salzenberg <chip@perl.com>
Files: pp_hot.c

 TESTS

Subject: New test op/taint.t
Date: Tue, 25 Feb 1997 11:36:53 -0800 (PST)
From: Tom Phoenix <rootbeer@teleport.com>
Files: MANIFEST t/op/taint.t

    private-msgid: <Pine.GSO.3.95q.970225101328.18288M-100000@kelly.teleport.com

Subject: Patch to t/op/rand.t
Date: Tue, 25 Feb 1997 18:19:34 -0800 (PST)
From: Tom Phoenix <rootbeer@teleport.com>
Files: t/op/rand.t

    private-msgid: <Pine.GSO.3.95q.970225181321.13796Q-100000@kelly.teleport.com

 UTILITIES

Subject: Add --lax option to pod2man; use it in perldoc
From: Nat <gnat@frii.com>
Files: pod/pod2man.PL utils/perldoc.PL

Subject: Eliminate dead code in pod2man
From: Chip Salzenberg <chip@perl.com>
Files: pod/pod2man.PL

1 files changed, 8 insertions, 5 deletions

diff --git a/hv.c b/hv.c
index 1ae7ad952d..bcf5b96996 100644
--- a/hv.c
+++ b/hv.c
@@ -135,9 +135,9 @@ I32 lval;
     if (HvNAME(hv) && strEQ(HvNAME(hv),ENV_HV_NAME)) {
       char *gotenv;
 
-      gotenv = ENV_getenv(key);
-      if (gotenv != NULL) {
+      if ((gotenv = ENV_getenv(key)) != Nullch) {
         sv = newSVpv(gotenv,strlen(gotenv));
+        SvTAINTED_on(sv);
         return hv_store(hv,key,klen,sv,hash);
       }
     }
@@ -177,7 +177,6 @@ register U32 hash;
 	    char *k;
 	    New(54, k, HEK_BASESIZE + sizeof(SV*), char);
 	    HeKEY_hek(&mh) = (HEK*)k;
-	    HeKLEN(&mh) = HEf_SVKEY;	/* key will always hold an SV* */
 	}
 	HeSVKEY_set(&mh, keysv);
 	HeVAL(&mh) = sv;
@@ -215,9 +214,9 @@ register U32 hash;
     if (HvNAME(hv) && strEQ(HvNAME(hv),ENV_HV_NAME)) {
       char *gotenv;
 
-      gotenv = ENV_getenv(key);
-      if (gotenv != NULL) {
+      if ((gotenv = ENV_getenv(key)) != Nullch) {
         sv = newSVpv(gotenv,strlen(gotenv));
+        SvTAINTED_on(sv);
         return hv_store_ent(hv,keysv,sv,hash);
       }
     }
@@ -316,8 +315,12 @@ register U32 hash;
 
     xhv = (XPVHV*)SvANY(hv);
     if (SvMAGICAL(hv)) {
+	bool save_taint = tainted;
+	if (tainting)
+	    tainted = SvTAINTED(keysv);
 	keysv = sv_2mortal(newSVsv(keysv));
 	mg_copy((SV*)hv, val, (char*)keysv, HEf_SVKEY);
+	TAINT_IF(save_taint);
 	if (!xhv->xhv_array
 	    && (SvMAGIC(hv)->mg_moremagic
 		|| (SvMAGIC(hv)->mg_type != 'E'