https://gcc.gnu.org/bugzilla/show_bug.cgi?id=38295
--- Comment #11 from Florian Weimer ---
Created attachment 39799
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39799&action=edit
label.c
(In reply to Andrew Pinski from comment #6)
> Not always since they could be in different sections vi
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=38295
Florian Weimer changed:
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=38295
Martin Sebor changed:
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--- Comment #8 from gnu at behdad dot org 2008-11-27 18:55 ---
If they are asked to be put in different sections, sure, it will err. But
doesn't gcc already use relative calls for many static functions in the same
unit?
Let me back out: my request is: add gcc extension to support some
--- Comment #7 from pinskia at gcc dot gnu dot org 2008-11-27 18:53 ---
Also the linker could do some branch relaxation which causes the size to be
different based on the layout of the functions.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38295
--- Comment #6 from pinskia at gcc dot gnu dot org 2008-11-27 18:52 ---
(In reply to comment #5)
> If the two functions are in the same compilation unit (and static), it's known
> at compile time, isn't it?
Not always since they could be in different sections via -ffunction-sections or
--- Comment #5 from gnu at behdad dot org 2008-11-27 18:35 ---
If the two functions are in the same compilation unit (and static), it's known
at compile time, isn't it?
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38295
--- Comment #4 from pinskia at gcc dot gnu dot org 2008-11-27 18:33 ---
(In reply to comment #2)
> I'm not following. Why arrays? Those are pointers, and their difference is
> known at compile time.
Not at compile time really, the difference is known at link time.
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--- Comment #3 from gnu at behdad dot org 2008-11-27 18:32 ---
Oh, I see what you mean. Yes, I said in my report that this is
undefined/unsupported/... according to the C standard.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38295
--- Comment #2 from gnu at behdad dot org 2008-11-27 18:31 ---
I'm not following. Why arrays? Those are pointers, and their difference is
known at compile time.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38295
--- Comment #1 from pinskia at gcc dot gnu dot org 2008-11-27 18:28 ---
Differences between two different arrays don't make sense really.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38295
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