For PR java/6520:

* fold-const.c (fold_convert): Don't modify existing tree's type. From-SVN: r54529

For PR java/6520:
* fold-const.c (fold_convert): Don't modify existing tree's type. From-SVN: r54529
0797e472 · Tom Tromey · Tom Tromey · f288d4aa · 0797e472 · 0797e472
Commit 0797e472 authored Jun 11, 2002 by Tom Tromey Committed by Tom Tromey Jun 11, 2002
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gcc/ChangeLog
+5 -0

gcc/fold-const.c
+4 -2

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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+2002-06-11  Tom Tromey  <tromey@redhat.com>
+
+	For PR java/6520:
+	* fold-const.c (fold_convert): Don't modify existing tree's type.
+
 2002-06-11  Geoffrey Keating  <geoffk@redhat.com>

 	* config/rs6000/ppc-asm.h: Remove some Windows NT leftovers.

--- a/gcc/fold-const.c
+++ b/gcc/fold-const.c
@@ -1596,8 +1596,10 @@ fold_convert (t, arg1)
 	{
 	  if (REAL_VALUE_ISNAN (TREE_REAL_CST (arg1)))
 	    {
-	      t = arg1;
-	      TREE_TYPE (arg1) = type;
+	      /* We make a copy of ARG1 so that we don't modify an
+		 existing constant tree.  */
+	      t = copy_node (arg1);
+	      TREE_TYPE (t) = type;
 	      return t;
 	    }