[PATCH] manual: Document indirect functions (IFUNC)

[Andreas Schwab]

On Jun 17 2026, Yury Khrustalev wrote:

> On Wed, Jun 10, 2026 at 03:24:06PM -0300, Adhemerval Zanella wrote:
>> +Indirect functions are usually defined using the @code{ifunc} function
>> +attribute provided by GCC and compatible compilers:
>> +
>> +@smallexample
>> +static int
>> +my_func_generic (int a)
>> +@{
>> +  /* @r{@dots{}} */
>> +@}
>> +
>> +static int
>> +my_func_vectorized (int a)
>> +@{
>> +  /* @r{@dots{}} */
>> +@}
>> +
>> +/* @r{The resolver returns the address of the selected
>> +   implementation.}  */
>> +static int (*my_func_resolver (void)) (int)
>
> Perhaps, static int (*my_func_resolver (int)) (void)?

static typeof (my_func_generic) *
my_func_resolver (void)

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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