https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79540
--- Comment #16 from John David Anglin <danglin at gcc dot gnu.org> ---
print '(f2.1)', 100.000000
end
Here is backtrace info:
Breakpoint 2, 0x7afce720 in memcpy () from /usr/lib/libc.2
(gdb) p/x $r26
$6 = 0x7eff0c1d
(gdb) p/x $r25
$8 = 0x7eff0d9a
(gdb) p/x $r24
$5 = 0xfffffffd
$r24 contains number of bytes to copy.
(gdb) bt
Python Exception <type 'exceptions.ImportError'> Failed to load
/home/gnu/lib/python2.7/lib-dynload/itertools.sl:
#0 0x7afce720 in memcpy () from /usr/lib/libc.2
#1 0x7adcb884 in build_float_string (dtp=0x7eff0658, f=0x0,
buffer=0x7eff0d98 '+100.\000', size=1, nprinted=0, precision=1,
sign_bit=0, zero_flag=0, npad=0,
result=0x7eff0c18 ' .\377\006\364\000', len=0x7eff0f18)
at ../../../gcc/libgfortran/io/write_float.def:630
#2 0x7adcc00c in get_float_string (dtp=0xfffffffd, f=0x7eff0658,
source=0xfffffffd <error: Cannot access memory at address 0xfffffffd>,
kind=2130644378, comp_d=0, buffer=0x7eff0d98 '+100.\000', precision=1,
size=6, result=0x7eff0c18 ' .\377\006\364\000', res_len=0x7eff0f18)
at ../../../gcc/libgfortran/io/write_float.def:1065
#3 0x7adcd4dc in write_float_0 (dtp=0xfffffffd, f=0x7eff0c1d,
source=0x7eff0c1c '.\377\006\364\000', kind=2130644378)
at ../../../gcc/libgfortran/io/write.c:1584
#4 0x7adc1420 in formatted_transfer_scalar_write (dtp=0xfffffffd,
type=2130643997, p=0x7eff0658, kind=28, size=4)
at ../../../gcc/libgfortran/io/transfer.c:2097
#5 0x7adc1984 in formatted_transfer (dtp=0x7eff0658, type=BT_UNKNOWN,
p=0xfffffffd, kind=2130643996, size=4, nelems=1)
at ../../../gcc/libgfortran/io/transfer.c:2335
#6 0x7adbd0a4 in wrap_scalar_transfer.constprop.0 (dtp=0x7eff0c1d,
type=2130644378, p=0xfffffffd, kind=1074790400, size=4)
at ../../../gcc/libgfortran/io/transfer.c:2369
#7 0x7adbd6c8 in *_gfortran_transfer_real (dtp=0xfffffffd, p=0x7eff0c1d,
kind=2130644378) at ../../../gcc/libgfortran/io/transfer.c:2396
#8 0x7adbd728 in *_gfortran_transfer_real_write (dtp=0x7eff0c1d,
p=0x7eff0d9a, kind=-3) at ../../../gcc/libgfortran/io/transfer.c:2402
write_float.def may be miscompiled.
