cc1: warning: unrecognized command line option "-Wno-narrowing"

[Andreas Schwab]

Jason Merrill <jason@redhat.com> writes:

> No, it's accepted by the C front end too, it just has no effect.  It's
> listed as a C option in c.opt.  But during builds cc1 warns about it
> sometimes and not others.  It's very odd.

$ gcc -Wno-narrowing -c hello.c 
$ gcc -Wno-narrowing -c hello.c -Wall
hello.c:14:1: warning: return type defaults to ‘int’
cc1: warning: unrecognized command line option "-Wno-narrowing"

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
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