Hello Shubham,

Thank you for the reply! I see. That's strange, the `f` pointer turns out
to be invalid. May I ask when would the corresponding struct be
initialized?

And I am attaching the corresponding GIMPLE IR code. As you can see, I am
traversing to the following statement:

r_9 = foo (a_6, d_2);

And trigger the above procedure. Function `foo` has been traversed before
this statement which means the corresponding function* should have been
created already?

Best,
Shuai


On Tue, Feb 16, 2021 at 9:23 PM Shubham Narlawar <gsocshubham@gmail.com>
wrote:

>
>
> On Tue, 16 Feb, 2021, 5:55 PM Shuai Wang via Gcc, <gcc@gcc.gnu.org> wrote:
>
>> Thank you for your reply!
>>
>> I tried to use this in the following code:
>>
>>  tree func_decl = gimple_call_fndecl(stmt); // stmt is the function call
>> statement
>> function* f = DECL_STRUCT_FUNCTION(func_decl);
>> std::cerr << get_name(f->decl) << std::endl;
>>
>> However, it seems the last line throws an exception as follows:
>>
>> during GIMPLE pass: XXX  // here XXX is my pass name
>> internal compiler error: Segmentation fault
>>
>
> Hi,
>
> Check whether f is a valid function pointer or not. It seems the function
> is inlined. You can verify it with -fno-inline.
>
> Macros defined in tree.h are helpful to get a broader view of the problem.
>
> Shubham
>
> ...
>>
>> That seems strange. Does that seem familiar to you by any chance? Thank
>> you!
>>
>> Best,
>> Shuai
>>
>>
>>
>> On Tue, Feb 16, 2021 at 7:52 PM Martin Liška <mliska@suse.cz> wrote:
>>
>> > On 2/16/21 9:51 AM, Shuai Wang via Gcc wrote:
>> > > However, can I proceed further to get the function* of "foo"? I
>> checked
>> >
>> > Hello.
>> >
>> > Yes, you can call DECL_STRUCT_FUNCTION(func_decl).
>> >
>> > Martin
>> >
>>
>