DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 61A8B3950C48
Subject: Re: g++ 9.3.0 segfaults
To: cygwin AT cygwin DOT com
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Message-ID: <f5ff260d-a596-bc35-d30a-d642952d457a@gmail.com>
Date: Sun, 12 Apr 2020 10:03:37 +0000
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From: JonY via Cygwin <cygwin AT cygwin DOT com>
Reply-To: JonY <10walls AT gmail DOT com>
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From: JonY <10walls AT gmail DOT com>
To: cygwin AT cygwin DOT com
Message-ID: <f5ff260d-a596-bc35-d30a-d642952d457a AT gmail DOT com>
Subject: Re: g++ 9.3.0 segfaults
References: <d00dfff3-bcb1-3e1b-7bf1-c3372c5f42e0 AT gmail DOT com>
In-Reply-To: <d00dfff3-bcb1-3e1b-7bf1-c3372c5f42e0 AT gmail DOT com>

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On 4/12/20 6:10 AM, Marco Atzeri via Cygwin wrote:
> Joy,
> this segfault happens on 9.3.0 but not on 9.2.0
>=20
> To replicate is enough to download cdo-1.9.9rc2.tar.gz from
> https://code.mpimet.mpg.de/projects/cdo/files
>=20
> https://code.mpimet.mpg.de/attachments/download/21529/cdo-1.9.9rc2.tar.=
gz
>=20
> ./configure
> make
>=20
>=20
> Entering directory '/cygdrive/d/cyg_pub/devel/cdo/cdo-1.9.9rc2_build/sr=
c'
> g++ -DHAVE_CONFIG_H -I. -I../../cdo-1.9.9rc2/src
> -I../../cdo-1.9.9rc2/libcdi/src -I../../cdo-1.9.9rc2/src/mpim_grid
> -I/usr/include/libxml2=C2=A0 -g -O2 -fopenmp=C2=A0 -MT cdo-cdo.o -MD -M=
P -MF
> .deps/cdo-cdo.Tpo -c -o cdo-cdo.o `test -f 'cdo.cc' || echo
> '../../cdo-1.9.9rc2/src/'`cdo.cc
> g++: internal compiler error: Segmentation fault signal terminated
> program cc1plus
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <https://gcc.gnu.org/bugs/> for instructions.
> make[1]: *** [Makefile:2446: cdo-cdo.o] Error 4
> make[1]: Leaving directory
> '/cygdrive/d/cyg_pub/devel/cdo/cdo-1.9.9rc2_build/src'
> make: *** [Makefile:960: all] Error 2
>=20
> attached the stackdump
>=20
> Regards
> Marco
>=20

Please file a bug entry on https://gcc.gnu.org/bugzilla/, and attach the
preprocessed source code.

Do something like:
g++ -DHAVE_CONFIG_H .... -MF .deps/cdo-cdo.Tpo -E -o cdo-cdo.ii
=2E./../cdo-1.9.9rc2/src/cdo.cc

Alternatively, try reducing the optimization level temporarily.


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