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gmacros: Add G_GNUC_STRFTIME macro

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Analogous to G_GNUC_PRINTF and G_GNUC_SCANF, to annotate
functions similar to strftime.

https://gitlab.gnome.org/GNOME/glib/issues/1575
This commit is contained in:
Christian Persch 2018-10-31 11:50:07 +01:00
parent 361fed5d75
commit d62a07831c
3 changed files with 23 additions and 0 deletions
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1
docs/reference/glib/glib-sections.txt
View File

@ -442,6 +442,7 @@ G_GNUC_FALLTHROUGH
G_GNUC_UNUSED
G_GNUC_PRINTF
G_GNUC_SCANF
G_GNUC_STRFTIME
G_GNUC_FORMAT
G_GNUC_NULL_TERMINATED
G_GNUC_WARN_UNUSED_RESULT

17
glib/docs.c
View File

@ -2359,6 +2359,23 @@
* for details.
*/
/**
* G_GNUC_STRFTIME:
* @format_idx: the index of the argument corresponding to
* the format string (the arguments are numbered from 1)
*
* Expands to the GNU C strftime format function attribute if the compiler
* is gcc. This is used for declaring functions which take a format argument
* which is passed to strftime() or an API implementing its formats. It allows
* the compiler check the format passed to the function.
*
* See the
* [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-Wformat-3288)
* for details.
*
* Since: 2.60
*/
/**
* G_GNUC_FORMAT:
* @arg_idx: the index of the argument

5
glib/gmacros.h
View File

@ -165,11 +165,15 @@
__attribute__((__format__ (gnu_printf, format_idx, arg_idx)))
#define G_GNUC_SCANF( format_idx, arg_idx ) \
__attribute__((__format__ (gnu_scanf, format_idx, arg_idx)))
#define G_GNUC_STRFTIME( format_idx ) \
__attribute__((__format__ (gnu_strftime, format_idx, 0)))
#else
#define G_GNUC_PRINTF( format_idx, arg_idx ) \
__attribute__((__format__ (__printf__, format_idx, arg_idx)))
#define G_GNUC_SCANF( format_idx, arg_idx ) \
__attribute__((__format__ (__scanf__, format_idx, arg_idx)))
#define G_GNUC_STRFTIME( format_idx ) \
__attribute__((__format__ (__strftime__, format_idx, 0)))
#endif
#define G_GNUC_FORMAT( arg_idx ) \
__attribute__((__format_arg__ (arg_idx)))
@ -184,6 +188,7 @@
#else /* !__GNUC__ */
#define G_GNUC_PRINTF( format_idx, arg_idx )
#define G_GNUC_SCANF( format_idx, arg_idx )
#define G_GNUC_STRFTIME( format_idx )
#define G_GNUC_FORMAT( arg_idx )
#define G_GNUC_NORETURN
#define G_GNUC_CONST