fix s/(.)/die/e

Commit 6502e08109cd003b2cdf39bc94ef35e52203240b introduced copying just
the part of the regex string that were needed; but piggy-backing on that
commit was a temporary change I made that I forgot to undo, which - it
turns out - causes SEGVs and similar when the replacement part of a
substitution dies.

This commits reverts that change.

Spotted as
    Bleadperl v5.17.3-255-g6502e08 breaks GAAS/URI-1.60.tar.gz
(not assigned an RT ticket number yet)

diff --git a/pp_ctl.c b/pp_ctl.c
index af0d558..1fc855d 100644 (file)
--- a/pp_ctl.c
+++ b/pp_ctl.c
@@ -363,7 +363,8 @@ Perl_rxres_save(pTHX_ void **rsp, REGEXP *rx)
        *rsp = (void*)p;
     }
 
-    *p++ = RX_MATCH_COPIED(rx) ? 1 : 0;
+    /* what (if anything) to free on croak */
+    *p++ = PTR2UV(RX_MATCH_COPIED(rx) ? RX_SUBBEG(rx) : NULL);
     RX_MATCH_COPIED_off(rx);
 
 #ifdef PERL_OLD_COPY_ON_WRITE