From d2fb022441110f49013a6437bc4becf97b56f965 Mon Sep 17 00:00:00 2001
From: ceriel <none@none>
Date: Fri, 18 Dec 1992 10:29:31 +0000
Subject: [PATCH] improved ply handling

---
 mach/proto/cg/codegen.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/mach/proto/cg/codegen.c b/mach/proto/cg/codegen.c
index e763e085d..33b433b22 100644
--- a/mach/proto/cg/codegen.c
+++ b/mach/proto/cg/codegen.c
@@ -139,6 +139,10 @@ unsigned codegen(codep,ply,toplevel,costlimit,forced) byte *codep; unsigned cost
 #ifndef NDEBUG
 		chkregs();
 #endif
+		if (! toplevel) {
+			ply -= emp-saveemp+1;
+			if (ply <= 0) ply = 1;
+		}
 		n = *bp++;
 		assert(n>0 && n<=MAXRULE);
 		if (n>1) {
@@ -657,8 +661,7 @@ if (Debug > 1) fprintf(stderr, "cost after coercions: %u\n", t);
 		}
 	}
 	if (!toplevel) {
-		if (ply >= j) ply += emrepllen - j;
-		else ply = emrepllen;
+		ply += emrepllen;
 	}
 	break;
     case DO_COST:
-- 
2.34.1