GNU bug report logs - #63365
30.0.50; GCC 13.1 breaks building Emacs with native-compilation

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Cyril Arnould <cyril.arnould <at> outlook.com>, Andrea Corallo <acorallo <at> gnu.org>
Cc: 63365 <at> debbugs.gnu.org, arash <at> gnu.org, svraka.andras <at> gmail.com
Subject: bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation
Date: Fri, 16 Jun 2023 13:31:26 +0300

> From: Cyril Arnould <cyril.arnould <at> outlook.com>
> CC: "eliz <at> gnu.org" <eliz <at> gnu.org>, "63365 <at> debbugs.gnu.org"
> 	<63365 <at> debbugs.gnu.org>, "  akrl <at> sdf.org" <akrl <at> sdf.org>,
> 	András Svraka <svraka.andras <at> gmail.com>
> Date: Fri, 16 Jun 2023 09:04:16 +0000
> 
> I've been playing around with compiler options. From my findings, the
> 
> -foptimize-sibling-calls flag breaks the build:
> 
>  
> 
> ./autogen.sh
> 
> CFLAGS='-g3 -O1 -gdwarf-2 -foptimize-sibling-calls' \
> 
> ./configure --with-native-compilation
> 
> make
> 
>  
> 
> OTOH, using -O1 with every flag listed under -O2 *but*
> 
> -foptimize-sibling-calls results in the build succeeding. The following
> 
> works as well for me:
> 
>  
> 
> ./autogen.sh
> 
> CFLAGS='-g3 -O2 -gdwarf-2 -fno-optimize-sibling-calls' \
> 
> ./configure --with-native-compilation
> 
> make

Andrea, any reason that this GCC switch should break
native-compilation?  Does the same problem happen on GNU/Linux?

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