[OE-core] [PATCH] gcc-4.7: fix gcc ICE when building with gcc-4.8

[Khem Raj]

looks good. Please send a cherry pick request for dylan too

On May 1, 2013, at 2:07 PM, Josh Cartwright <josh.cartwright at ni.com> wrote:

> Backport fix for internal compiler error when building gcc-4.7.2 with a
> gcc-4.8.0 host gcc.
> 
> See upstream bug here: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56308
> 
> Signed-off-by: Josh Cartwright <josh.cartwright at ni.com>
> ---
> meta/recipes-devtools/gcc/gcc-4.7.inc              |  3 +-
> .../gcc/gcc-4.7/avoid-oob-array-access.patch       | 45 ++++++++++++++++++++++
> 2 files changed, 47 insertions(+), 1 deletion(-)
> create mode 100644 meta/recipes-devtools/gcc/gcc-4.7/avoid-oob-array-access.patch
> 
> diff --git a/meta/recipes-devtools/gcc/gcc-4.7.inc b/meta/recipes-devtools/gcc/gcc-4.7.inc
> index a05cac9..81c8f07 100644
> --- a/meta/recipes-devtools/gcc/gcc-4.7.inc
> +++ b/meta/recipes-devtools/gcc/gcc-4.7.inc
> @@ -1,6 +1,6 @@
> require gcc-common.inc
> 
> -PR = "r19"
> +PR = "r20"
> 
> # Third digit in PV should be incremented after a minor release
> # happens from this branch on gcc e.g. currently its 4.7.1
> @@ -77,6 +77,7 @@ SRC_URI = "${GNU_MIRROR}/gcc/gcc-${PV}/gcc-${PV}.tar.bz2 \
> 	   file://use-ml-conf-files-from-B.patch \
> 	   file://wcast-qual-PR55383.patch \
> 	   file://disable-texinfo-5.patch \
> +	   file://avoid-oob-array-access.patch \
> 	  "
> SRC_URI[md5sum] = "cc308a0891e778cfda7a151ab8a6e762"
> SRC_URI[sha256sum] = "8a9283d7010fb9fe5ece3ca507e0af5c19412626384f8a5e9434251ae100b084"
> diff --git a/meta/recipes-devtools/gcc/gcc-4.7/avoid-oob-array-access.patch b/meta/recipes-devtools/gcc/gcc-4.7/avoid-oob-array-access.patch
> new file mode 100644
> index 0000000..4ba707d
> --- /dev/null
> +++ b/meta/recipes-devtools/gcc/gcc-4.7/avoid-oob-array-access.patch
> @@ -0,0 +1,45 @@
> +Upstream-Status: Backport
> +
> +See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56308
> +
> +From 1e37e371d2cca3549b71a247bf79778aa1a9e1c4 Mon Sep 17 00:00:00 2001
> +From: rguenth <rguenth at 138bc75d-0d04-0410-961f-82ee72b054a4>
> +Date: Fri, 21 Sep 2012 10:08:35 +0000
> +Subject: [PATCH] 2012-09-21  Richard Guenther  <rguenther at suse.de>
> +
> +	PR middle-end/54638
> +	Backport from mainline
> +	2012-04-19  Richard Guenther  <rguenther at suse.de>
> +
> +	* ira-int.h (ira_allocno_object_iter_cond): Avoid out-of-bound
> +	array access.
> +
> +git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_7-branch@191605 138bc75d-0d04-0410-961f-82ee72b054a4
> +---
> + gcc/ChangeLog | 9 +++++++++
> + gcc/ira-int.h | 9 +++++++--
> + 2 files changed, 16 insertions(+), 2 deletions(-)
> +
> +diff --git a/gcc/ira-int.h b/gcc/ira-int.h
> +index 9faabb5..771a368 100644
> +--- a/gcc/ira-int.h
> ++++ b/gcc/ira-int.h
> +@@ -1138,8 +1138,13 @@ static inline bool
> + ira_allocno_object_iter_cond (ira_allocno_object_iterator *i, ira_allocno_t a,
> + 			      ira_object_t *o)
> + {
> +-  *o = ALLOCNO_OBJECT (a, i->n);
> +-  return i->n++ < ALLOCNO_NUM_OBJECTS (a);
> ++  int n = i->n++;
> ++  if (n < ALLOCNO_NUM_OBJECTS (a))
> ++    {
> ++      *o = ALLOCNO_OBJECT (a, n);
> ++      return true;
> ++    }
> ++  return false;
> + }
> + 
> + /* Loop over all objects associated with allocno A.  In each
> +-- 
> +1.8.2.2
> +
> -- 
> 1.8.2.2
> 
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