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gmacros: Improve documentation of GCC attributes
Link to the GCC documentation pages, and format the attribute names as code. Signed-off-by: Philip Withnall <withnall@endlessm.com>
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Philip Withnall
parent
e03a2c8633
commit
a2a17a978a
@ -98,15 +98,15 @@
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/**
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* G_GNUC_PURE:
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*
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* Expands to the GNU C pure function attribute if the compiler is gcc.
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* Declaring a function as pure enables better optimization of calls to
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* the function. A pure function has no effects except its return value
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* Expands to the GNU C `pure` function attribute if the compiler is gcc.
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* Declaring a function as `pure` enables better optimization of calls to
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* the function. A `pure` function has no effects except its return value
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* and the return value depends only on the parameters and/or global
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* variables.
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*
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* Place the attribute after the declaration, just before the semicolon.
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*
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* See the GNU C documentation for more details.
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* See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-pure-function-attribute) for more details.
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*/
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/**
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@ -171,14 +171,14 @@
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/**
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* G_GNUC_NULL_TERMINATED:
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*
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* Expands to the GNU C sentinel function attribute if the compiler is gcc.
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* Expands to the GNU C `sentinel` function attribute if the compiler is gcc.
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* This function attribute only applies to variadic functions and instructs
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* the compiler to check that the argument list is terminated with an
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* explicit %NULL.
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*
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* Place the attribute after the declaration, just before the semicolon.
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*
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* See the GNU C documentation for more details.
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* See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-sentinel-function-attribute) for more details.
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*
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* Since: 2.8
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*/
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@ -232,7 +232,7 @@
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* G_GNUC_ALLOC_SIZE:
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* @x: the index of the argument specifying the allocation size
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*
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* Expands to the GNU C alloc_size function attribute if the compiler
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* Expands to the GNU C `alloc_size` function attribute if the compiler
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* is a new enough gcc. This attribute tells the compiler that the
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* function returns a pointer to memory of a size that is specified
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* by the @xth function parameter.
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@ -240,7 +240,7 @@
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* Place the attribute after the function declaration, just before the
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* semicolon.
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*
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* See the GNU C documentation for more details.
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* See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-alloc_005fsize-function-attribute) for more details.
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*
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* Since: 2.18
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*/
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@ -250,7 +250,7 @@
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* @x: the index of the argument specifying one factor of the allocation size
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* @y: the index of the argument specifying the second factor of the allocation size
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*
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* Expands to the GNU C alloc_size function attribute if the compiler is a
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* Expands to the GNU C `alloc_size` function attribute if the compiler is a
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* new enough gcc. This attribute tells the compiler that the function returns
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* a pointer to memory of a size that is specified by the product of two
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* function parameters.
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@ -258,7 +258,7 @@
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* Place the attribute after the function declaration, just before the
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* semicolon.
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*
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* See the GNU C documentation for more details.
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* See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-alloc_005fsize-function-attribute) for more details.
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*
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* Since: 2.18
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*/
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@ -278,9 +278,9 @@
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* @arg_idx: the index of the first of the format arguments, or 0 if
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* there are no format arguments
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*
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* Expands to the GNU C format function attribute if the compiler is gcc.
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* Expands to the GNU C `format` function attribute if the compiler is gcc.
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* This is used for declaring functions which take a variable number of
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* arguments, with the same syntax as printf(). It allows the compiler
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* arguments, with the same syntax as `printf()`. It allows the compiler
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* to type-check the arguments passed to the function.
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*
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* Place the attribute after the function declaration, just before the
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@ -305,9 +305,9 @@
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* @arg_idx: the index of the first of the format arguments, or 0 if
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* there are no format arguments
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*
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* Expands to the GNU C format function attribute if the compiler is gcc.
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* Expands to the GNU C `format` function attribute if the compiler is gcc.
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* This is used for declaring functions which take a variable number of
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* arguments, with the same syntax as scanf(). It allows the compiler
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* arguments, with the same syntax as `scanf()`. It allows the compiler
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* to type-check the arguments passed to the function.
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*
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* See the
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@ -320,9 +320,9 @@
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* @format_idx: the index of the argument corresponding to
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* the format string (the arguments are numbered from 1)
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*
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* Expands to the GNU C strftime format function attribute if the compiler
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* Expands to the GNU C `strftime` format function attribute if the compiler
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* is gcc. This is used for declaring functions which take a format argument
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* which is passed to strftime() or an API implementing its formats. It allows
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* which is passed to `strftime()` or an API implementing its formats. It allows
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* the compiler check the format passed to the function.
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*
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* See the
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@ -336,18 +336,18 @@
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* G_GNUC_FORMAT:
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* @arg_idx: the index of the argument
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*
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* Expands to the GNU C format_arg function attribute if the compiler
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* Expands to the GNU C `format_arg` function attribute if the compiler
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* is gcc. This function attribute specifies that a function takes a
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* format string for a printf(), scanf(), strftime() or strfmon() style
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* function and modifies it, so that the result can be passed to a printf(),
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* scanf(), strftime() or strfmon() style function (with the remaining
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* format string for a `printf()`, `scanf()`, `strftime()` or `strfmon()` style
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* function and modifies it, so that the result can be passed to a `printf()`,
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* `scanf()`, `strftime()` or `strfmon()` style function (with the remaining
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* arguments to the format function the same as they would have been
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* for the unmodified string).
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*
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* Place the attribute after the function declaration, just before the
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* semicolon.
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*
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* See the GNU C documentation for more details.
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* See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-Wformat-nonliteral-1) for more details.
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*
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* |[<!-- language="C" -->
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* gchar *g_dgettext (gchar *domain_name, gchar *msgid) G_GNUC_FORMAT (2);
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@ -357,37 +357,37 @@
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/**
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* G_GNUC_NORETURN:
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*
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* Expands to the GNU C noreturn function attribute if the compiler is gcc.
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* Expands to the GNU C `noreturn` function attribute if the compiler is gcc.
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* It is used for declaring functions which never return. It enables
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* optimization of the function, and avoids possible compiler warnings.
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*
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* Place the attribute after the declaration, just before the semicolon.
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*
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* See the GNU C documentation for more details.
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* See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-noreturn-function-attribute) for more details.
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*/
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/**
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* G_GNUC_CONST:
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*
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* Expands to the GNU C const function attribute if the compiler is gcc.
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* Declaring a function as const enables better optimization of calls to
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* the function. A const function doesn't examine any values except its
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* Expands to the GNU C `const` function attribute if the compiler is gcc.
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* Declaring a function as `const` enables better optimization of calls to
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* the function. A `const` function doesn't examine any values except its
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* parameters, and has no effects except its return value.
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*
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* Place the attribute after the declaration, just before the semicolon.
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*
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* See the GNU C documentation for more details.
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* See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-const-function-attribute) for more details.
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*
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* A function that has pointer arguments and examines the data pointed to
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* must not be declared const. Likewise, a function that calls a non-const
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* function usually must not be const. It doesn't make sense for a const
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* function to return void.
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* must not be declared `const`. Likewise, a function that calls a non-`const`
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* function usually must not be `const`. It doesn't make sense for a `const`
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* function to return `void`.
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*/
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/**
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* G_GNUC_UNUSED:
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*
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* Expands to the GNU C unused function attribute if the compiler is gcc.
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* Expands to the GNU C `unused` function attribute if the compiler is gcc.
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* It is used for declaring functions and arguments which may never be used.
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* It avoids possible compiler warnings.
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*
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@ -400,20 +400,20 @@
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* gint other_argument) G_GNUC_UNUSED;
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* ]|
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*
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* See the GNU C documentation for more details.
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* See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-unused-function-attribute) for more details.
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*/
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/**
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* G_GNUC_NO_INSTRUMENT:
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*
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* Expands to the GNU C no_instrument_function function attribute if the
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* Expands to the GNU C `no_instrument_function` function attribute if the
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* compiler is gcc. Functions with this attribute will not be instrumented
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* for profiling, when the compiler is called with the
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* `-finstrument-functions` option.
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*
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* Place the attribute after the declaration, just before the semicolon.
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*
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* See the GNU C documentation for more details.
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* See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-no_005finstrument_005ffunction-function-attribute) for more details.
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*/
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#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 4)
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@ -460,15 +460,15 @@
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/**
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* G_GNUC_FALLTHROUGH:
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*
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* Expands to the GNU C fallthrough statement attribute if the compiler is gcc.
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* Expands to the GNU C `fallthrough` statement attribute if the compiler is gcc.
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* This allows declaring case statement to explicitly fall through in switch
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* statements. To enable this feature, use -Wimplicit-fallthrough during
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* statements. To enable this feature, use `-Wimplicit-fallthrough` during
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* compilation.
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*
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* Put the attribute right before the case statement you want to fall through
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* to.
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*
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* See the GNU C documentation for more details.
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* See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Statement-Attributes.html#index-fallthrough-statement-attribute) for more details.
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*
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* Since: 2.60
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*/
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@ -481,14 +481,14 @@
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/**
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* G_GNUC_DEPRECATED:
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*
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* Expands to the GNU C deprecated attribute if the compiler is gcc.
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* It can be used to mark typedefs, variables and functions as deprecated.
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* Expands to the GNU C `deprecated` attribute if the compiler is gcc.
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* It can be used to mark `typedef`s, variables and functions as deprecated.
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* When called with the `-Wdeprecated-declarations` option,
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* gcc will generate warnings when deprecated interfaces are used.
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*
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* Place the attribute after the declaration, just before the semicolon.
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*
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* See the GNU C documentation for more details.
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* See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-deprecated-function-attribute) for more details.
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*
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* Since: 2.2
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*/
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@ -509,7 +509,7 @@
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*
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* Place the attribute after the declaration, just before the semicolon.
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*
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* See the GNU C documentation for more details.
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* See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-deprecated-function-attribute) for more details.
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*
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* Note that if @f is a macro, it will be expanded in the warning message.
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* You can enclose it in quotes to prevent this. (The quotes will show up
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@ -556,11 +556,11 @@
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/**
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* G_GNUC_MAY_ALIAS:
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*
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* Expands to the GNU C may_alias type attribute if the compiler is gcc.
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* Expands to the GNU C `may_alias` type attribute if the compiler is gcc.
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* Types with this attribute will not be subjected to type-based alias
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* analysis, but are assumed to alias with any other type, just like char.
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* analysis, but are assumed to alias with any other type, just like `char`.
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*
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* See the GNU C documentation for details.
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* See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Type-Attributes.html#index-may_005falias-type-attribute) for details.
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*
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* Since: 2.14
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*/
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@ -573,13 +573,13 @@
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/**
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* G_GNUC_WARN_UNUSED_RESULT:
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*
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* Expands to the GNU C warn_unused_result function attribute if the compiler
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* Expands to the GNU C `warn_unused_result` function attribute if the compiler
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* is gcc. This function attribute makes the compiler emit a warning if the
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* result of a function call is ignored.
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*
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* Place the attribute after the declaration, just before the semicolon.
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*
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* See the GNU C documentation for more details.
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* See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-warn_005funused_005fresult-function-attribute) for more details.
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*
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* Since: 2.10
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*/
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