From: Richard Kenner <kenner@gcc.gnu.org>
Date: Mon, 15 Apr 1996 12:06:07 +0000 (-0400)
Subject: (eadd1): Check for overflow on X plus X.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=2dedbe1f310983cd826910160c779a4a755377f0;p=gcc.git

(eadd1): Check for overflow on X plus X.

From-SVN: r11782
---

diff --git a/gcc/real.c b/gcc/real.c
index b5e29859658..3ebf8f32e7a 100644
--- a/gcc/real.c
+++ b/gcc/real.c
@@ -2663,8 +2663,15 @@ eadd1 (a, b, c)
 	    {
 	      if (bi[j] != 0)
 		{
-		  /* This could overflow, but let emovo take care of that. */
 		  ltb += 1;
+		  if (ltb >= 0x7fff)
+		    {
+		      eclear (c);
+		      if (ai[0] != 0)
+			eneg (c);
+		      einfin (c);
+		      return;
+		    }
 		  break;
 		}
 	    }