From 0fff05884fe4b40c86252e89fb16f307309299cd Mon Sep 17 00:00:00 2001
From: NeilBrown <neil@brown.name>
Date: Sat, 18 Dec 2021 20:29:30 +1100
Subject: [PATCH] oceani: fix parsing of error in struct field.

If there is an error - we violated our segments.

Signed-off-by: NeilBrown <neil@brown.name>
---
 csrc/oceani-tests.mdc |  4 +++-
 csrc/oceani.mdc       | 15 +++++++++++----
 2 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/csrc/oceani-tests.mdc b/csrc/oceani-tests.mdc
index b613ffe..e502822 100644
--- a/csrc/oceani-tests.mdc
+++ b/csrc/oceani-tests.mdc
@@ -922,7 +922,7 @@ various places that `type_err()` are called.
 
 	struct foo
 		a: number
-		b:string = "hello"
+		b:string = "hello"; d:Boolean
 
 	func main()
 		c := "hello"
@@ -1033,10 +1033,12 @@ various places that `type_err()` are called.
 		b:string
 	struct foo
 		c:number
+		x:[5]:string
 
 ###### output: type_err5
 	.tmp.code:8:7: error: type already declared: foo
 	.tmp.code:2:7: info: this is location of declartion: foo
+	.tmp.code:10:13: Syntax error in struct field: :
 	.tmp.code:5:7: error: type has recursive definition: baz
 	.tmp.code:2:7: error: type has recursive definition: foo
 
diff --git a/csrc/oceani.mdc b/csrc/oceani.mdc
index 0778da2..2f3c973 100644
--- a/csrc/oceani.mdc
+++ b/csrc/oceani.mdc
@@ -2969,10 +2969,17 @@ function will be needed.
 	| SimpleFieldList EOL ${ $0 = $<SFL; }$
 
 	FieldLines -> SimpleFieldList Newlines ${ $0 = $<SFL; }$
-	| FieldLines SimpleFieldList Newlines ${
-		$SFL->prev = $<FL;
-		$0 = $<SFL;
-	}$
+	| FieldLines SimpleFieldList Newlines ${ {
+		struct fieldlist *f = $<SFL;
+
+		if (f) {
+			$0 = f;
+			while (f->prev)
+				f = f->prev;
+			f->prev = $<FL;
+		} else
+			$0 = $<FL;
+	} }$
 
 	SimpleFieldList -> Field ${ $0 = $<F; }$
 	| SimpleFieldList ; Field ${
-- 
2.43.0