[Buildroot] [PATCH] toolchain: introduce BR2_TOOLCHAIN_HAS_GCC_BUG_80786

[Buildroot] [PATCH] toolchain: introduce BR2_TOOLCHAIN_HAS_GCC_BUG_80786

[Giulio Benetti]

openssh package fails to build for the M68K architecture with optimization
enabled with gcc = 12.3.0 and it's still present in gcc = 13.2.0:
http://autobuild.buildroot.net/results/d29/d29c662e41d8969e6a8aa24870e728bcc7050563/

It's been reported upstream:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80786

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
---
 toolchain/Config.in | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/toolchain/Config.in b/toolchain/Config.in
index a142d27231..328cd023d1 100644
--- a/toolchain/Config.in
+++ b/toolchain/Config.in
@@ -141,6 +141,13 @@ config BR2_TOOLCHAIN_HAS_GCC_BUG_68485
 	bool
 	default y if BR2_microblaze
 
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80786.
+# ICE: in change_address_1, at emit-rtl.c:2275
+# This bug still exists in gcc 12.x
+config BR2_TOOLCHAIN_HAS_GCC_BUG_80786
+	bool
+	default y if BR2_m68k
+
 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81426
 config BR2_TOOLCHAIN_HAS_GCC_BUG_81426
 	bool
-- 
2.34.1

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Re: [Buildroot] [PATCH] toolchain: introduce BR2_TOOLCHAIN_HAS_GCC_BUG_80786

[Thomas Petazzoni via buildroot]

On Sun,  6 Aug 2023 20:37:38 +0200
Giulio Benetti <giulio.benetti@benettiengineering.com> wrote:

> openssh package fails to build for the M68K architecture with optimization
> enabled with gcc = 12.3.0 and it's still present in gcc = 13.2.0:
> http://autobuild.buildroot.net/results/d29/d29c662e41d8969e6a8aa24870e728bcc7050563/
> 
> It's been reported upstream:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80786
> 
> Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>

But this commit is only introducing a hidden boolean option, how can it
solve any problem on its own? Can you submit this in a patch series
where it gets used at least in some place?

Thanks!

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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Re: [Buildroot] [PATCH] toolchain: introduce BR2_TOOLCHAIN_HAS_GCC_BUG_80786

[Giulio Benetti]

Hello Thomas,

On 06/08/23 23:32, Thomas Petazzoni via buildroot wrote:
> On Sun,  6 Aug 2023 20:37:38 +0200
> Giulio Benetti <giulio.benetti@benettiengineering.com> wrote:
> 
>> openssh package fails to build for the M68K architecture with optimization
>> enabled with gcc = 12.3.0 and it's still present in gcc = 13.2.0:
>> http://autobuild.buildroot.net/results/d29/d29c662e41d8969e6a8aa24870e728bcc7050563/
>>
>> It's been reported upstream:
>> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80786
>>
>> Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
> 
> But this commit is only introducing a hidden boolean option, how can it
> solve any problem on its own? Can you submit this in a patch series
> where it gets used at least in some place?

This is to ease this patch:
https://patchwork.ozlabs.org/project/buildroot/patch/ZM/aaG0d/pzoYgp1@waldemar-brodkorb.de/

so once this patch is applied he can use BR2_TOOLCHAIN_HAS_GCC_BUG_80786

-- 
Giulio Benetti
CEO&CTO@Benetti Engineering sas
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