diff options
Diffstat (limited to 'gcc/doc/extend.texi')
| -rw-r--r-- | gcc/doc/extend.texi | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index 43bebf9..6b626e2 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -2065,6 +2065,7 @@ objects (@pxref{C++ Attributes}). These attributes are not currently implemented for Objective-C@. @item deprecated +@itemx deprecated (@var{msg}) @cindex @code{deprecated} attribute. The @code{deprecated} attribute results in a warning if the function is used anywhere in the source file. This is useful when identifying @@ -2080,7 +2081,9 @@ int old_fn (); int (*fn_ptr)() = old_fn; @end smallexample -results in a warning on line 3 but not line 2. +results in a warning on line 3 but not line 2. The optional msg +argument, which must be a string, will be printed in the warning if +present. The @code{deprecated} attribute can also be used for variables and types (@pxref{Variable Attributes}, @pxref{Type Attributes}.) @@ -3845,6 +3848,7 @@ These attributes override the default chosen by the @option{-fno-common} and @option{-fcommon} flags respectively. @item deprecated +@itemx deprecated (@var{msg}) @cindex @code{deprecated} attribute The @code{deprecated} attribute results in a warning if the variable is used anywhere in the source file. This is useful when identifying @@ -3860,7 +3864,9 @@ extern int old_var; int new_fn () @{ return old_var; @} @end smallexample -results in a warning on line 3 but not line 2. +results in a warning on line 3 but not line 2. The optional msg +argument, which must be a string, will be printed in the warning if +present. The @code{deprecated} attribute can also be used for functions and types (@pxref{Function Attributes}, @pxref{Type Attributes}.) @@ -4490,6 +4496,7 @@ not referenced, but contain constructors and destructors that have nontrivial bookkeeping functions. @item deprecated +@itemx deprecated (@var{msg}) The @code{deprecated} attribute results in a warning if the type is used anywhere in the source file. This is useful when identifying types that are expected to be removed in a future version of a program. @@ -4512,7 +4519,9 @@ T3 z __attribute__ ((deprecated)); results in a warning on line 2 and 3 but not lines 4, 5, or 6. No warning is issued for line 4 because T2 is not explicitly deprecated. Line 5 has no warning because T3 is explicitly -deprecated. Similarly for line 6. +deprecated. Similarly for line 6. The optional msg +argument, which must be a string, will be printed in the warning if +present. The @code{deprecated} attribute can also be used for functions and variables (@pxref{Function Attributes}, @pxref{Variable Attributes}.) |