From: Greg King <gregdk@users.sf.net>
Date: Wed, 1 Mar 2017 11:36:25 +0000 (-0500)
Subject: Fixed a pointer-difference, comparison-with-zero expression.
X-Git-Tag: V2.16~37^2
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=8f0ea644dddfaf9c41718ff055f4b77f0b8f43ad;p=cc65

Fixed a pointer-difference, comparison-with-zero expression.

Some GCC C compilers can't subtract higher pointers from lower pointers properly, when those pointers must be scaled (because they point to objects that are wider than a char). The scaling is done as unsigned which makes the difference positive instead of negative.

So, a broken expression was changed into a direct comparison between the two pointers.
---

diff --git a/test/ref/yacc.c b/test/ref/yacc.c
index 5768f80d0..d0b9190e4 100644
--- a/test/ref/yacc.c
+++ b/test/ref/yacc.c
@@ -562,7 +562,7 @@ yylook()
 		}
 
 # ifdef LEXDEBUG
-		if((*(lsp-1)-yysvec-1)<0)
+		if (*(lsp-1) < yysvec + 1)
 		{
 			fprintf(yyout,"yylook:  stopped (end)\n");
 		}