set PL_reg_starttry correctly

PL_reg_starttry is only used for debugging, and S_regtry only set it
within DEBUG_EXECUTE_r; however, its value is also used within
DEBUG_STACK_r. So always set it when debugging, not just when
execute-debugging is enabled.

1 files changed, 3 insertions, 1 deletions

diff --git a/regexec.c b/regexec.c
index 76ad57db28..243387f823 100644
--- a/regexec.c
+++ b/regexec.c
@@ -2670,7 +2670,9 @@ S_regtry(pTHX_ regmatch_info *reginfo, char **startpos)
 	prog->subbeg = PL_bostr;
 	prog->sublen = PL_regeol - PL_bostr; /* strend may have been modified */
     }
-    DEBUG_EXECUTE_r(PL_reg_starttry = *startpos);
+#ifdef DEBUGGING
+    PL_reg_starttry = *startpos;
+#endif
     prog->offs[0].start = *startpos - PL_bostr;
     PL_reginput = *startpos;
     prog->lastparen = 0;