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-rw-r--r--gcc/ChangeLog6
-rw-r--r--gcc/doc/invoke.texi10
2 files changed, 12 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 733c1d8ea56..6c6fa0b046f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2003-01-07 Janis Johnson <janis187@us.ibm.com>
+
+ PR other/8947
+ * doc/invoke.texi (-malign-double): Explain that the option breaks
+ binary compatibility.
+
2003-01-08 Andreas Schwab <schwab@suse.de>
* config.gcc (m68k-*-linux*): Don't set extra_parts and gnu_ld,
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 359e22dcf78..ab1e2dae38c 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -1,12 +1,12 @@
@c Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-@c 2000, 2001, 2002 Free Software Foundation, Inc.
+@c 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
@c This is part of the GCC manual.
@c For copying conditions, see the file gcc.texi.
@ignore
@c man begin COPYRIGHT
Copyright @copyright{} 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997,
-1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.1 or
@@ -7818,9 +7818,11 @@ boundary. Aligning @code{double} variables on a two word boundary will
produce code that runs somewhat faster on a @samp{Pentium} at the
expense of more memory.
-@strong{Warning:} if you use the @samp{-malign-double} switch,
+@strong{Warning:} if you use the @option{-malign-double} switch,
structures containing the above types will be aligned differently than
-the published application binary interface specifications for the 386.
+the published application binary interface specifications for the 386
+and will not be binary compatible with structures in code compiled
+without that switch.
@item -m128bit-long-double
@opindex m128bit-long-double