From 6c9e1cb25102e3d5d2b67c2a18e7563d3c04ec8b Mon Sep 17 00:00:00 2001
From: Richard Stallman <rms@gnu.org>
Date: Sun, 19 Jul 1992 01:09:39 +0000
Subject: [PATCH] (build_binary_op): Don't set shorten for signed division.

From-SVN: r1623
---
 gcc/c-typeck.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gcc/c-typeck.c b/gcc/c-typeck.c
index 42d2be0686d..7b9342914a1 100644
--- a/gcc/c-typeck.c
+++ b/gcc/c-typeck.c
@@ -2283,7 +2283,9 @@ build_binary_op (code, orig_op0, orig_op1, convert_p)
 	  if (!(code0 == INTEGER_TYPE && code1 == INTEGER_TYPE))
 	    resultcode = RDIV_EXPR;
 	  else
-	    shorten = 1;
+	    /* When dividing two signed integers, you have to promote to int.
+	       E.g. (short) -32868 / (short) -1 doesn't fit in a short.  */
+	    shorten = TREE_UNSIGNED (op0);
 	  common = 1;
 	}
       break;
-- 
2.30.2