Am 2018-07-20 um 23:22 schrieb Martin Sebor:
As the last observation in PR 82063 Jim points out that
Both -Warray-bounds and -Warray-bounds= are listed in the c.opt
file as being enabled by -Wall, but they are the same option,
and it causes this one option to be processed twice in the
C_handle_option_auto function in the generated options.c file.
It gets set to the same value twice, so it does work as intended,
but this is wasteful.
I have removed the redundant -Wall from the first option and
committed the change as obvious in r262912.
Hi Martin,
this looks related to PR 68845 and my patch in there. I never posted it
to gcc-patches because I couldn't find a definitive answer on how
options duplicated between common.opt and c-family/c.opt are supposed to
be handled.
For example, Warray-bounds in common.opt is a separate option (not an
alias to Warray-bounds=), leading to separate enums for them. Is this
intended? Warray-bounds seemed to be the only option with an equal sign
doing it like that at that time. Now Wcast-align is doing the same...
Can you shed some light on this?
Franz
