From: NeilBrown <neil@brown.name>
Date: Sat, 22 Jun 2019 22:56:15 +0000 (+1000)
Subject: parsergen: don't assume TK_newline in look-ahead for lineline
X-Git-Url: https://ocean-lang.org/code/?p=ocean;a=commitdiff_plain;h=f24b54a97b9955aa5761b22aa64d5418e23e80f2

parsergen: don't assume TK_newline in look-ahead for lineline

A linelike production might not have TK_newline in the look-ahead,
so don't assume it.  If it isn't there, make the look-ahead
set empty.

Signed-off-by: NeilBrown <neil@brown.name>
---

diff --git a/csrc/parsergen.mdc b/csrc/parsergen.mdc
index 2546d76..679fab6 100644
--- a/csrc/parsergen.mdc
+++ b/csrc/parsergen.mdc
@@ -1348,7 +1348,8 @@ into the go to set, so the item is ineffective.
 			}
 			sn = save_set(g, LA);
 			LA = set_find(g, sn);
-			symset_add(&LAnl, TK_newline, 0);
+			if (symset_find(&LA, TK_newline))
+				symset_add(&LAnl, TK_newline, 0);
 			snnl = save_set(g, LAnl);
 			LAnl = set_find(g, snnl);
 		}