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* [Bug lto/47934] New: LTO: function with attribute "used" is not emitted
@ 2011-03-01 6:45 d.g.gorbachev at gmail dot com
2011-03-01 6:47 ` [Bug lto/47934] " pinskia at gcc dot gnu.org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: d.g.gorbachev at gmail dot com @ 2011-03-01 6:45 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47934
Summary: LTO: function with attribute "used" is not emitted
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: d.g.gorbachev@gmail.com
============= bug.c =============
static void __attribute__((used))
foo(void)
{
}
int main(void)
{
__asm__("call foo");
return 0;
}
=================================
$ gcc -flto bug.c
/tmp/ccCtTmmT.ltrans0.ltrans.o: In function `main':
ccCtTmmT.ltrans0.o:(.text+0x4): undefined reference to `foo'
collect2: ld returned 1 exit status
>From GCC documentation:
`used'
This attribute, attached to a function, means that code must be
emitted for the function even if it appears that the function is
not referenced. This is useful, for example, when the function is
referenced only in inline assembly.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug lto/47934] LTO: function with attribute "used" is not emitted
2011-03-01 6:45 [Bug lto/47934] New: LTO: function with attribute "used" is not emitted d.g.gorbachev at gmail dot com
@ 2011-03-01 6:47 ` pinskia at gcc dot gnu.org
2011-03-01 6:58 ` [Bug lto/47934] LTO: function with attribute "used" is emitted under the "wrong" name d.g.gorbachev at gmail dot com
2011-03-01 10:21 ` rguenth at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu.org @ 2011-03-01 6:47 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47934
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-03-01 06:47:23 UTC ---
Actually it is most likely emitted but just the "wrong" name.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug lto/47934] LTO: function with attribute "used" is emitted under the "wrong" name.
2011-03-01 6:45 [Bug lto/47934] New: LTO: function with attribute "used" is not emitted d.g.gorbachev at gmail dot com
2011-03-01 6:47 ` [Bug lto/47934] " pinskia at gcc dot gnu.org
@ 2011-03-01 6:58 ` d.g.gorbachev at gmail dot com
2011-03-01 10:21 ` rguenth at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: d.g.gorbachev at gmail dot com @ 2011-03-01 6:58 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47934
Dmitry Gorbachev <d.g.gorbachev at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|LTO: function with |LTO: function with
|attribute "used" is not |attribute "used" is emitted
|emitted |under the "wrong" name.
--- Comment #2 from Dmitry Gorbachev <d.g.gorbachev at gmail dot com> 2011-03-01 06:58:43 UTC ---
Indeed, it works with __asm__("call foo.1985.1988"). Changed the summary.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug lto/47934] LTO: function with attribute "used" is emitted under the "wrong" name.
2011-03-01 6:45 [Bug lto/47934] New: LTO: function with attribute "used" is not emitted d.g.gorbachev at gmail dot com
2011-03-01 6:47 ` [Bug lto/47934] " pinskia at gcc dot gnu.org
2011-03-01 6:58 ` [Bug lto/47934] LTO: function with attribute "used" is emitted under the "wrong" name d.g.gorbachev at gmail dot com
@ 2011-03-01 10:21 ` rguenth at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-03-01 10:21 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47934
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |DUPLICATE
--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-03-01 10:20:47 UTC ---
dup
*** This bug has been marked as a duplicate of bug 43038 ***
^ permalink raw reply [flat|nested] 4+ messages in thread
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2011-03-01 6:45 [Bug lto/47934] New: LTO: function with attribute "used" is not emitted d.g.gorbachev at gmail dot com
2011-03-01 6:47 ` [Bug lto/47934] " pinskia at gcc dot gnu.org
2011-03-01 6:58 ` [Bug lto/47934] LTO: function with attribute "used" is emitted under the "wrong" name d.g.gorbachev at gmail dot com
2011-03-01 10:21 ` rguenth at gcc dot gnu.org
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