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* [Bug inline-asm/34832] New: rejects "i"(static_const_var) without -O2
@ 2008-01-17 18:39 stsp at users dot sourceforge dot net
2008-01-17 18:40 ` [Bug inline-asm/34832] " stsp at users dot sourceforge dot net
2008-01-18 22:58 ` pinskia at gcc dot gnu dot org
0 siblings, 2 replies; 3+ messages in thread
From: stsp at users dot sourceforge dot net @ 2008-01-17 18:39 UTC (permalink / raw)
To: gcc-bugs
Hi.
Opening per suggestion in Bug 23200.
The following program:
---
int main()
{
static const int i = 1;
asm volatile ("" :: "i"(i));
return i;
}
---
gives this when compiled without -O2:
---
asc1.c: In function 'main':
asc1.c:4: warning: asm operand 0 probably doesn't match constraints
asc1.c:4: error: impossible constraint in 'asm'
---
Using -O2 makes it to compile.
--
Summary: rejects "i"(static_const_var) without -O2
Product: gcc
Version: 4.1.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: inline-asm
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: stsp at users dot sourceforge dot net
GCC host triplet: x86_64, i386
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34832
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug inline-asm/34832] rejects "i"(static_const_var) without -O2
2008-01-17 18:39 [Bug inline-asm/34832] New: rejects "i"(static_const_var) without -O2 stsp at users dot sourceforge dot net
@ 2008-01-17 18:40 ` stsp at users dot sourceforge dot net
2008-01-18 22:58 ` pinskia at gcc dot gnu dot org
1 sibling, 0 replies; 3+ messages in thread
From: stsp at users dot sourceforge dot net @ 2008-01-17 18:40 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from stsp at users dot sourceforge dot net 2008-01-17 18:24 -------
Created an attachment (id=14961)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14961&action=view)
test case
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34832
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug inline-asm/34832] rejects "i"(static_const_var) without -O2
2008-01-17 18:39 [Bug inline-asm/34832] New: rejects "i"(static_const_var) without -O2 stsp at users dot sourceforge dot net
2008-01-17 18:40 ` [Bug inline-asm/34832] " stsp at users dot sourceforge dot net
@ 2008-01-18 22:58 ` pinskia at gcc dot gnu dot org
1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2008-01-18 22:58 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from pinskia at gcc dot gnu dot org 2008-01-18 22:04 -------
static const int i = 1;
i is not a constant integal expression in C. It is in C++. With optimization,
we "inline" the value.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |INVALID
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34832
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2008-01-18 22:04 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2008-01-17 18:39 [Bug inline-asm/34832] New: rejects "i"(static_const_var) without -O2 stsp at users dot sourceforge dot net
2008-01-17 18:40 ` [Bug inline-asm/34832] " stsp at users dot sourceforge dot net
2008-01-18 22:58 ` pinskia at gcc dot gnu dot org
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