https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109080
Bug ID: 109080
Summary: A write of a NAMELIST group containing an allocatable
array is incorrect
Product: gcc
Version: 11.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: urbanjost at comcast dot net
Target Milestone: ---
Sometimes it runs and writes out ALINES incorrectly,
and sometimes the same executable segfaults.
program gnubug
implicit none
character(len=2) :: lines(3)
character(len=2),allocatable :: blines(:)
character(len=:),allocatable :: alines(:)
namelist/args/lines, alines, blines
lines = ['Xx','Yy','Zz']
alines = ['Xx','Yy','Zz']
blines = ['Xx','Yy','Zz']
write(*,nml=args,delim='quote')
end program gnubug
gfortran xx.f90
$ ./a.out
&ARGS
LINES="Xx","Yy","Zz",
ALINES= 3*"Xx",
BLINES="Xx","Yy","Zz",
/
./a.out
Program received signal SIGSEGV: Segmentation fault - invalid memory reference.
Backtrace for this error:
#0 0x1516241f9700 in ???
#1 0x1516241f88a5 in ???
#2 0x15162402908f in ???
at
/build/glibc-SzIz7B/glibc-2.31/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
#3 0x151624173590 in ???
at ../sysdeps/x86_64/multiarch/memcmp-sse4.S:72
#4 0x15162443c187 in ???
#5 0x15162443cece in ???
#6 0x151624432974 in ???
#7 0x151624432d01 in ???
#8 0x55c8983f77d8 in ???
#9 0x55c8983f7821 in ???
#10 0x15162400a082 in __libc_start_main
at ../csu/libc-start.c:308
#11 0x55c8983f710d in ???
#12 0xffffffffffffffff in ???
