Add the -Wall
option that enables all warnings
#20545
Closed
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fixes #18559
This PR adds the
-Wall
option, which enables all warnings when it is set. Note that when-Wunused
is not set (empty), setting-Wall
is equivalent to passing-Wunused:all
. But when-Wunused
is set to some specific value (e.g.-Wunused:imports,locals
), passing-Wall
does not change it.