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* doc/extend.texi (Object Size Checking): Improve grammar.

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From-SVN: r247349
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Jonathan Wakely 2017-04-27 19:44:25 +01:00 committed by Jonathan Wakely
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2 changed files with 7 additions and 3 deletions
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@ -1,3 +1,7 @@
2017-04-27 Jonathan Wakely <jwakely@redhat.com>
* doc/extend.texi (Object Size Checking): Improve grammar.
2017-04-27 Richard Earnshaw <rearnsha@arm.com>
PR target/80530

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gcc/doc/extend.texi
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@ -10209,14 +10209,14 @@ assert (__builtin_object_size (q, 1) == sizeof (var.b));
There are built-in functions added for many common string operation
functions, e.g., for @code{memcpy} @code{__builtin___memcpy_chk}
built-in is provided. This built-in has an additional last argument,
which is the number of bytes remaining in object the @var{dest}
which is the number of bytes remaining in the object the @var{dest}
argument points to or @code{(size_t) -1} if the size is not known.
The built-in functions are optimized into the normal string functions
like @code{memcpy} if the last argument is @code{(size_t) -1} or if
it is known at compile time that the destination object will not
be overflown. If the compiler can determine at compile time the
object will be always overflown, it issues a warning.
be overflowed. If the compiler can determine at compile time that the
object will always be overflowed, it issues a warning.
The intended use can be e.g.@: