<s>
In	O
computing	O
,	O
a	O
fatal	O
exception	O
error	O
or	O
fatal	O
error	O
is	O
an	O
error	O
that	O
causes	O
a	O
program	O
to	O
abort	O
and	O
may	O
therefore	O
return	O
the	O
user	O
to	O
the	O
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
A	O
fatal	O
error	O
is	O
usually	O
distinguished	O
from	O
a	O
fatal	B-Error_Name
system	I-Error_Name
error	I-Error_Name
(	O
colloquially	O
referred	O
to	O
in	O
the	O
MS	B-Application
Windows	I-Application
operating	B-General_Concept
systems	I-General_Concept
by	O
the	O
error	O
message	O
it	O
produces	O
as	O
a	O
"	O
blue	O
screen	O
of	O
death	O
"	O
)	O
.	O
</s>
<s>
A	O
program	O
attempts	O
to	O
divide	B-Algorithm
by	I-Algorithm
zero	I-Algorithm
(	O
only	O
for	O
integers	O
;	O
with	O
the	O
IEEE	O
floating	B-Algorithm
point	I-Algorithm
standard	O
,	O
this	O
creates	O
an	O
infinity	B-Application
instead	O
)	O
.	O
</s>
<s>
In	O
some	O
systems	O
,	O
such	O
as	O
macOS	B-Application
and	O
Microsoft	B-Application
Windows	I-Application
,	O
a	O
fatal	O
error	O
causes	O
the	O
operating	B-General_Concept
system	I-General_Concept
to	O
create	O
a	O
log	O
entry	O
or	O
to	O
save	O
an	O
image	O
(	O
core	B-Error_Name
dump	I-Error_Name
)	O
of	O
the	O
process	O
.	O
</s>
