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invoke.texi (-Wmemset-transposed-args): Fix typos, adjust wording.

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gcc/ChangeLog:

	* invoke.texi (-Wmemset-transposed-args): Fix typos, adjust wording.

From-SVN: r267920
This commit is contained in:
Martin Sebor 2019-01-14 11:26:32 -07:00
parent 7cc0fa5de7
commit 97d4188719
1 changed files with 9 additions and 8 deletions
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gcc/doc/invoke.texi
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@ -6959,14 +6959,15 @@ the element size. This warning is enabled by @option{-Wall}.
@item -Wmemset-transposed-args
@opindex Wmemset-transposed-args
@opindex Wno-memset-transposed-args
Warn for suspicious calls to the @code{memset} built-in function, if the
second argument is not zero and the third argument is zero. This warns e.g.@:
about @code{memset (buf, sizeof buf, 0)} where most probably
@code{memset (buf, 0, sizeof buf)} was meant instead. The diagnostics
is only emitted if the third argument is literal zero. If it is some
expression that is folded to zero, a cast of zero to some type, etc.,
it is far less likely that the user has mistakenly exchanged the arguments
and no warning is emitted. This warning is enabled by @option{-Wall}.
Warn for suspicious calls to the @code{memset} built-in function where
the second argument is not zero and the third argument is zero. For
example, the call @code{memset (buf, sizeof buf, 0)} is diagnosed because
@code{memset (buf, 0, sizeof buf)} was meant instead. The diagnostic
is only emitted if the third argument is a literal zero. Otherwise, if
it is an expression that is folded to zero, or a cast of zero to some
type, it is far less likely that the arguments have been mistakenly
transposed and no warning is emitted. This warning is enabled
by @option{-Wall}.
@item -Waddress
@opindex Waddress