In option.c, optionlist and common.opt the word "parameter" is written "paramter" (e between m and t is missing).
It shows up on the first lines when doing a "cc1 --version | less"
--
Summary: Spelling error
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: minor
Priority: P2
Component: other
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: christophe dot jaillet at wanadoo dot fr
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18186
