On 12/12/12 03:33, Richard Biener wrote:
On Tue, 11 Dec 2012, Aldy Hernandez wrote:
4. Type checking as part of a `for' initializer segfaults on g++ 3.2:
for (type = TYPE_MAIN_VARIANT (blah); ....)
The only reasonable thing I could think of, was disabling the tree
checking code for older compilers.
blocker anyway. For 4. I think we should simply document that
you need to build with --disable-stage1-checking (it's one case that
hints at we don't want to support 3.2 - does 3.3 work here? With
our SLE9 gcc 3.3 hammer branch based compiler I get even some more
ICEs).
Hi Richard.
Attached is a patch documenting --disable-stage1-checking for older
GCC's with a suggested discouragement.
OK for trunk?
commit da7964f82e42499dde24e7029b4454637ae68e85
Author: Aldy Hernandez <al...@redhat.com>
Date: Tue Dec 18 09:55:39 2012 -0600
PR other/54324
* doc/install.texi (Tools/packages necessary for building GCC):
Suggest --disable-stage1-checking for older GCC's.
diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi
index e534216..8273a87 100644
--- a/gcc/doc/install.texi
+++ b/gcc/doc/install.texi
@@ -254,6 +254,11 @@ To build all languages in a cross-compiler or other
configuration where
GCC binary (version 3.4 or later) because source code for language
frontends other than C might use GCC extensions.
+Note that to bootstrap GCC with versions of GCC earlier than 3.4, you
+may need to use @option{--disable-stage1-checking}, though
+bootstrapping the compiler with such earlier compilers is strongly
+discouraged.
+
@item GNAT
In order to build the Ada compiler (GNAT) you must already have GNAT
