https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96495
Bug ID: 96495
Summary: [gfortran] MERGE does not copy ALLOCATABLE property of
derived type
Product: gcc
Version: 10.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: paul.luck...@rwth-aachen.de
Target Milestone: ---
Created attachment 49011
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49011&action=edit
proof of concept code
There is a bug in gfortran and I singled out the problem this far:
- a derived type with ALLOCATABLE data
- a MERGE call
- an operator overloading used as argument to the MERGE call
- ELEMENTAL procedure
it is best to look at the proof of concept codes attached.
There are 4 highlighted code sections which should all yield similar results
but only one works whereas the others are broken.
The bug arises when called using a vector (using the ELEMENTAL feature).
====================
Supplementary information
$ gfortran --version
GNU Fortran (GCC) 10.1.0
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/opt/exports/gcc-10.1.0/bin/../libexec/gcc/x86_64-pc-linux-gnu/10.1.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-10.1.0-source/gcc-10.1.0/configure
--enable-languages=c,c++,fortran --enable-checking=release
--disable-libstdcxx-pch --enable-libgomp --enable-lto --enable-gold
--with-plugin-ld=gold --prefix=/usr/local/gcc-10.1.0
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 10.1.0 (GCC)
$ cat /etc/os-release
NAME="openSUSE Leap"
VERSION="15.1"
