Improve fix for regex reentrancy abort

Suggested by Stefan Monnier (Bug#21688).
* src/syntax.c (update_syntax_table_forward):
Remove recently-added PROPERTIZE arg, and assume it is true.
All callers changed.
* src/syntax.h (UPDATE_SYNTAX_TABLE_FORWARD_FAST):
Invoke update_syntax_table directly.

1 files changed, 5 insertions, 8 deletions

diff --git a/src/syntax.c b/src/syntax.c
index 687bef74a84..f939a76a2e6 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -246,7 +246,7 @@ SETUP_SYNTAX_TABLE (ptrdiff_t from, ptrdiff_t count)
   if (parse_sexp_lookup_properties)
     {
       if (count > 0)
-        update_syntax_table_forward (from, true, true, Qnil);
+        update_syntax_table_forward (from, true, Qnil);
       else if (from > BEGV)
         {
           update_syntax_table (from - 1, count, true, Qnil);
@@ -502,12 +502,12 @@ parse_sexp_propertize (ptrdiff_t charpos)
          e_property_truncated, so the e_property_truncated flag may
          occasionally be left raised spuriously.  This should be rare.  */
       gl_state.e_property_truncated = false;
-      update_syntax_table_forward (charpos, false, true, Qnil);
+      update_syntax_table_forward (charpos, false, Qnil);
     }
 }
 
 void
-update_syntax_table_forward (ptrdiff_t charpos, bool init, bool propertize,
+update_syntax_table_forward (ptrdiff_t charpos, bool init,
                              Lisp_Object object)
 {
   if (gl_state.e_property_truncated)
@@ -518,12 +518,9 @@ update_syntax_table_forward (ptrdiff_t charpos, bool init, bool propertize,
   else
     {
       update_syntax_table (charpos, 1, init, object);
-      propertize &= (NILP (object)
-                     && gl_state.e_property > syntax_propertize__done);
+      if (NILP (object) && gl_state.e_property > syntax_propertize__done)
+        parse_sexp_propertize (charpos);
     }
-
-  if (propertize)
-    parse_sexp_propertize (charpos);
 }
 
 /* Returns true if char at CHARPOS is quoted.