@cindex @code{malloc} attribute
The @code{malloc} attribute is used to tell the compiler that a function
may be treated as if it were the malloc function. The compiler assumes
-that calls to malloc result in a pointers that cannot alias anything.
+that calls to malloc result in pointers that cannot alias anything.
This will often improve optimization.
@item alias ("@var{target}")
Internal visibility is like hidden visibility, but with additional
processor specific semantics. Unless otherwise specified by the psABI,
gcc defines internal visibility to mean that the function is @emph{never}
-called from another module. Note that hidden symbols, while then cannot
+called from another module. Note that hidden symbols, while they cannot
be referenced directly by other modules, can be referenced indirectly via
function pointers. By indicating that a symbol cannot be called from
outside the module, gcc may for instance omit the load of a PIC register
both the @option{-mlongcall} switch and the @code{#pragma longcall}
setting.
-@xref{RS/6000 and PowerPC Options}, for more information on when long
-calls are and are not necessary.
+@xref{RS/6000 and PowerPC Options}, for more information on whether long
+calls are necessary.
@item long_call/short_call
@cindex indirect calls on ARM
-This attribute allows to specify how to call a particular function on
+This attribute specifies how a particular function is called on
ARM@. Both attributes override the @option{-mlong-calls} (@pxref{ARM Options})
command line switch and @code{#pragma long_calls} settings. The
@code{long_call} attribute causes the compiler to always call the
Note, interrupt handlers for the H8/300, H8/300H and SH processors can
be specified via the @code{interrupt_handler} attribute.
-Note, on the AVR interrupts will be enabled inside the function.
+Note, on the AVR, interrupts will be enabled inside the function.
-Note, for the ARM you can specify the kind of interrupt to be handled by
+Note, for the ARM, you can specify the kind of interrupt to be handled by
adding an optional parameter to the interrupt attribute like this:
@smallexample
@item signal
@cindex signal handler functions on the AVR processors
Use this attribute on the AVR to indicate that the specified
-function is an signal handler. The compiler will generate function
-entry and exit sequences suitable for use in an signal handler when this
-attribute is present. Interrupts will be disabled inside function.
+function is a signal handler. The compiler will generate function
+entry and exit sequences suitable for use in a signal handler when this
+attribute is present. Interrupts will be disabled inside the function.
@item naked
@cindex function without a prologue/epilogue code
Use this attribute on the ARM, AVR, C4x and IP2K ports to indicate that the
-specified function do not need prologue/epilogue sequences generated by
+specified function does not need prologue/epilogue sequences generated by
the compiler. It is up to the programmer to provide these sequences.
@item model (@var{model-name})
@cindex function addressability on the M32R/D
Use this attribute on the M32R/D to set the addressability of an object,
-and the code generated for a function.
+and of the code generated for a function.
The identifier @var{model-name} is one of @code{small}, @code{medium},
or @code{large}, representing each of the code models.
designs, @code{__alignof__ (double)} is 4 or even 2.
Some machines never actually require alignment; they allow reference to any
-data type even at an odd addresses. For these machines, @code{__alignof__}
+data type even at an odd address. For these machines, @code{__alignof__}
reports the @emph{recommended} alignment of a type.
If the operand of @code{__alignof__} is an lvalue rather than a type,
program. The warning also includes the location of the declaration
of the deprecated variable, to enable users to easily find further
information about why the variable is deprecated, or what they should
-do instead. Note that the warnings only occurs for uses:
+do instead. Note that the warning only occurs for uses:
@smallexample
extern int old_var __attribute__ ((deprecated));
@item packed
This attribute, attached to an @code{enum}, @code{struct}, or
-@code{union} type definition, specified that the minimum required memory
+@code{union} type definition, specifies that the minimum required memory
be used to represent the type.
@opindex fshort-enums
conversions.
Second, the argument is passed to the function using the calling
-conventions of first member of the transparent union, not the calling
+conventions of the first member of the transparent union, not the calling
conventions of the union itself. All members of the union must have the
same machine representation; this is necessary for this argument passing
to work properly.
to be inlined. If any uses of the function remain, they will refer to
the single copy in the library.
-For future compatibility with when GCC implements ISO C99 semantics for
-inline functions, it is best to use @code{static inline} only. (The
+Since GCC eventually will implement ISO C99 semantics for
+inline functions, it is best to use @code{static inline} only
+to guarentee compatibility. (The
existing semantics will remain available when @option{-std=gnu89} is
specified, but eventually the default will be @option{-std=gnu99} and
that will implement the C99 semantics, though it does not do so yet.)
@noindent
Note that the symbolic operand names have no relation whatsoever to
other C identifiers. You may use any name you like, even those of
-existing C symbols, but must ensure that no two operands within the same
+existing C symbols, but you must ensure that no two operands within the same
assembler construct use the same symbolic name.
Output operand expressions must be lvalues; the compiler can check this.
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