X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=regcomp.c;h=61c3e0d3593b5483bdc1b0489cf4e61b06fd7217;hb=469bf43793110471bf2ceb5e99f0e9cc630d60fe;hp=f78388b82779e833ae63de96a8863d95114b1c2b;hpb=eb1ab10a22402f281618389d37c3ca06ba5f71b2;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/regcomp.c b/regcomp.c
index f78388b..61c3e0d 100644
--- a/regcomp.c
+++ b/regcomp.c
@@ -147,6 +147,7 @@ static char* regwhite _((char *, char *));
 static char* nextchar _((void));
 static void re_croak2 _((const char* pat1,const char* pat2,...)) __attribute__((noreturn));
 static char* regpposixcc _((I32 value));
+static void clear_re _((void *r));
 #endif
 
 /* Length of a variant. */
@@ -207,6 +208,12 @@ static scan_data_t zero_scan_data = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
 #define CHR_DIST(a,b) (UTF ? utf8_distance(a,b) : a - b)
 
 STATIC void
+clear_re(void *r)
+{
+    ReREFCNT_dec((regexp *)r);
+}
+
+STATIC void
 scan_commit(scan_data_t *data)
 {
     dTHR;
@@ -868,7 +875,12 @@ pregcomp(char *exp, char *xend, PMOP *pm)
     r->prelen = xend - exp;
     r->precomp = PL_regprecomp;
     r->subbeg = r->subbase = NULL;
-    r->nparens = PL_regnpar - 1;		/* set early to validate backrefs */
+    r->nparens = PL_regnpar - 1;	/* set early to validate backrefs */
+
+    r->substrs = 0;			/* Useful during FAIL. */
+    r->startp = 0;			/* Useful during FAIL. */
+    r->endp = 0;			/* Useful during FAIL. */
+
     PL_regcomp_rx = r;
 
     /* Second pass: emit code. */
@@ -1765,6 +1777,7 @@ tryagain:
 	    break;
 	case 'b':
 	    PL_seen_zerolen++;
+	    PL_regseen |= REG_SEEN_LOOKBEHIND;
 	    ret = reg_node(
 		UTF
 		    ? (LOC ? BOUNDLUTF8 : BOUNDUTF8)
@@ -1776,6 +1789,7 @@ tryagain:
 	    break;
 	case 'B':
 	    PL_seen_zerolen++;
+	    PL_regseen |= REG_SEEN_LOOKBEHIND;
 	    ret = reg_node(
 		UTF
 		    ? (LOC ? NBOUNDLUTF8 : NBOUNDUTF8)