https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82007
Bug ID: 82007
Summary: DTIO write format stored in a string leads to severe
errors
Product: gcc
Version: 7.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: edouard.ca...@univ-rennes1.fr
Target Milestone: ---
Created attachment 42061
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42061&action=edit
Source file of dtio_bug_1.f90
Many tests of the DTIO feature (in .../gcc/testsuite/gfortran.dg/dtio_*.f90)
use inline format like in:
write( unit=10, fmt="(DT'zeroth')", iostat=myiostat, iomsg=astring) member
When I attempted to put the DTIO format string "(DT'zeroth')" in a character
string, I got many kinds of error, from ICE (Internal Compiler Error) to bad
execution.
See the attached file (which comes from the Gfortran testsuite dtio_1.f90,
simplified as much as possible) : dtio_bug_1.f90
According the length of the character string, it may lead to some errors. I
think the bug is related to how is read the DTIO format string.
The bug occurs either from GCC-7.2 compiled by myself on Ubuntu-16.10, either
from GCC-7.2 packaged in Ubuntu-17.10.
Regards,
Édouard
