(layout_record): Treat constant size as variable if it overflows.

From-SVN: r13105

diff --git a/gcc/stor-layout.c b/gcc/stor-layout.c
index 61768f842639212ce322084afe54ba3199cdf426..b0b64d2d0cd858db34792efeac6b250f187f21cb 100644 (file)
--- a/gcc/stor-layout.c
+++ b/gcc/stor-layout.c
@@ -507,6 +507,7 @@ layout_record (rec)
        if (dsize == 0)
          /* Do nothing.  */;
        else if (TREE_CODE (dsize) == INTEGER_CST
+                && ! TREE_CONSTANT_OVERFLOW (dsize)
                 && TREE_INT_CST_HIGH (dsize) == 0
                 && TREE_INT_CST_LOW (dsize) + const_size >= const_size)
          /* Use const_size if there's no overflow.  */