https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64770
Bug ID: 64770
Summary: [5 Regression] Segmentation fault when opening a file
with status="new" and the file exists.
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libfortran
Assignee: unassigned at gcc dot gnu.org
Reporter: dominiq at lps dot ens.fr
CC: jb at gcc dot gnu.org, jvdelisle at gcc dot gnu.org
Executing the code
implicit none
open(99, file="test.dat", access="stream", form="unformatted", status="new")
close(99)
end
should give
At line 3 of file eof_4_red.f90 (unit = 99, file = '')
Fortran runtime error: File 'test.dat' already exists
if the file "test.dat" exists. This is the case for 4.9 and 5.0 up to revision
r215301 (2014-09-16). However from r215328 (2014-09-17) up to r220065, running
the test gives
Program received signal SIGSEGV: Segmentation fault - invalid memory reference.
Backtrace for this error:
#0 0x10547d6c2
#1 0x10547c9e0
#2 0x7fff97f89f19
Segmentation fault
The culprit is likely r215307.
Note that I stumbled on this PR for gfortran.dg/eof_4.f90 while regtesting with
-j8.
