* [Bug middle-end/21374] [4.2/4.3/4.4 regression] ICE with nested function
[not found] <bug-21374-6528@http.gcc.gnu.org/bugzilla/>
@ 2008-12-31 22:10 ` reichelt at gcc dot gnu dot org
2009-01-13 9:30 ` rguenth at gcc dot gnu dot org
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From: reichelt at gcc dot gnu dot org @ 2008-12-31 22:10 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from reichelt at gcc dot gnu dot org 2008-12-31 22:09 -------
The testcase in comment #1 actually fails since GCC 3.4.5 when compiled without
any flags.
--
reichelt at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |reichelt at gcc dot gnu dot
| |org
Component|tree-optimization |middle-end
Keywords| |monitored
Known to fail| |3.4.5 4.0.0 4.0.4 4.1.2
| |4.2.4 4.3.2 4.4.0
Known to work| |3.4.4
Summary|ICE in |[4.2/4.3/4.4 regression] ICE
|declare_return_variable, at |with nested function
|tree-inline.c:906 |
Target Milestone|--- |4.2.5
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21374
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[not found] <bug-21374-6528@http.gcc.gnu.org/bugzilla/>
2008-12-31 22:10 ` [Bug middle-end/21374] [4.2/4.3/4.4 regression] ICE with nested function reichelt at gcc dot gnu dot org
@ 2009-01-13 9:30 ` rguenth at gcc dot gnu dot org
2009-01-13 9:33 ` rguenth at gcc dot gnu dot org
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From: rguenth at gcc dot gnu dot org @ 2009-01-13 9:30 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from rguenth at gcc dot gnu dot org 2009-01-13 09:29 -------
I think the best solution is to explore the possibility of lowering the call
to what it will look like in the end - pass return values of variable size
by reference. Hopefully all targets will end up doing this ;)
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21374
^ permalink raw reply [flat|nested] 14+ messages in thread* [Bug middle-end/21374] [4.2/4.3/4.4 regression] ICE with nested function
[not found] <bug-21374-6528@http.gcc.gnu.org/bugzilla/>
2008-12-31 22:10 ` [Bug middle-end/21374] [4.2/4.3/4.4 regression] ICE with nested function reichelt at gcc dot gnu dot org
2009-01-13 9:30 ` rguenth at gcc dot gnu dot org
@ 2009-01-13 9:33 ` rguenth at gcc dot gnu dot org
2009-01-13 12:52 ` joseph at codesourcery dot com
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From: rguenth at gcc dot gnu dot org @ 2009-01-13 9:33 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from rguenth at gcc dot gnu dot org 2009-01-13 09:33 -------
Or, can we make that invalid GNU C please? ;)
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jsm28 at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21374
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` (2 preceding siblings ...)
2009-01-13 9:33 ` rguenth at gcc dot gnu dot org
@ 2009-01-13 12:52 ` joseph at codesourcery dot com
2009-01-14 12:38 ` laurent at guerby dot net
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From: joseph at codesourcery dot com @ 2009-01-13 12:52 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from joseph at codesourcery dot com 2009-01-13 12:52 -------
Subject: Re: [4.2/4.3/4.4 regression] ICE with nested
function
Does standard Ada allow something like this? If so, there's not much
point making it invalid GNU C.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21374
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[not found] <bug-21374-6528@http.gcc.gnu.org/bugzilla/>
` (3 preceding siblings ...)
2009-01-13 12:52 ` joseph at codesourcery dot com
@ 2009-01-14 12:38 ` laurent at guerby dot net
2009-01-14 13:49 ` joseph at codesourcery dot com
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From: laurent at guerby dot net @ 2009-01-14 12:38 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from laurent at guerby dot net 2009-01-14 12:38 -------
I think return of variable sized objects are handled by the Ada front-end using
a secondary stack (and hidden pointers to boundary records) and so the back-end
doesn't see anything like the code above. The ACATS testsuite is very likely
checking that stuff extensively, so testing a patch disabling that GNU C
feature with Ada enabled will be enough to validate it.
--
laurent at guerby dot net changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |laurent at guerby dot net
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21374
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[not found] <bug-21374-6528@http.gcc.gnu.org/bugzilla/>
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2009-01-14 12:38 ` laurent at guerby dot net
@ 2009-01-14 13:49 ` joseph at codesourcery dot com
2009-01-14 15:00 ` jakub at gcc dot gnu dot org
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From: joseph at codesourcery dot com @ 2009-01-14 13:49 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from joseph at codesourcery dot com 2009-01-14 13:49 -------
Subject: Re: [4.2/4.3/4.4 regression] ICE with nested
function
If there is language-independent code that's supposed to handle this
extension that doesn't handle anything in any other language, I'd be fine
with deprecating and then removing the feature (returning variable-size
types from nested functions) from GNU C (unless a lot of users show up
after deprecation) - provided it at least isn't used in glibc (which does
use some nested functions).
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21374
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[not found] <bug-21374-6528@http.gcc.gnu.org/bugzilla/>
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2009-01-14 13:49 ` joseph at codesourcery dot com
@ 2009-01-14 15:00 ` jakub at gcc dot gnu dot org
2009-01-14 15:06 ` joseph at codesourcery dot com
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From: jakub at gcc dot gnu dot org @ 2009-01-14 15:00 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from jakub at gcc dot gnu dot org 2009-01-14 15:00 -------
As any call to a nested function with VL return type ICEs (even if the result
isn't used) in 3.4.5 through 4.4.0, I doubt this is used very widely.
That said, if we deprecate it now, we'd have to fix it, warning about
deprecation and then ICE doesn't make much sense.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21374
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[not found] <bug-21374-6528@http.gcc.gnu.org/bugzilla/>
` (6 preceding siblings ...)
2009-01-14 15:00 ` jakub at gcc dot gnu dot org
@ 2009-01-14 15:06 ` joseph at codesourcery dot com
2009-03-31 18:46 ` [Bug middle-end/21374] [4.3/4.4/4.5 " jsm28 at gcc dot gnu dot org
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From: joseph at codesourcery dot com @ 2009-01-14 15:06 UTC (permalink / raw)
To: gcc-bugs
------- Comment #9 from joseph at codesourcery dot com 2009-01-14 15:06 -------
Subject: Re: [4.2/4.3/4.4 regression] ICE with nested
function
If all such calls ICE since 3.4.5 then I think we can just remove the
feature (giving an error if a nested function is declared to return a
variable-length type).
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21374
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[not found] <bug-21374-6528@http.gcc.gnu.org/bugzilla/>
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2009-01-14 15:06 ` joseph at codesourcery dot com
@ 2009-03-31 18:46 ` jsm28 at gcc dot gnu dot org
2009-08-04 12:29 ` rguenth at gcc dot gnu dot org
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From: jsm28 at gcc dot gnu dot org @ 2009-03-31 18:46 UTC (permalink / raw)
To: gcc-bugs
------- Comment #10 from jsm28 at gcc dot gnu dot org 2009-03-31 18:45 -------
Closing 4.2 branch. It seems we had agreement in this PR to remove the
feature without a deprecation period.
--
jsm28 at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[4.2/4.3/4.4/4.5 regression]|[4.3/4.4/4.5 regression] ICE
|ICE with nested function |with nested function
Target Milestone|4.2.5 |4.3.4
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21374
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2009-03-31 18:46 ` [Bug middle-end/21374] [4.3/4.4/4.5 " jsm28 at gcc dot gnu dot org
@ 2009-08-04 12:29 ` rguenth at gcc dot gnu dot org
2009-09-18 0:38 ` pinskia at gcc dot gnu dot org
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From: rguenth at gcc dot gnu dot org @ 2009-08-04 12:29 UTC (permalink / raw)
To: gcc-bugs
------- Comment #11 from rguenth at gcc dot gnu dot org 2009-08-04 12:26 -------
GCC 4.3.4 is being released, adjusting target milestone.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.3.4 |4.3.5
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21374
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[not found] <bug-21374-6528@http.gcc.gnu.org/bugzilla/>
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2009-08-04 12:29 ` rguenth at gcc dot gnu dot org
@ 2009-09-18 0:38 ` pinskia at gcc dot gnu dot org
2009-09-18 0:40 ` pinskia at gcc dot gnu dot org
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From: pinskia at gcc dot gnu dot org @ 2009-09-18 0:38 UTC (permalink / raw)
To: gcc-bugs
------- Comment #12 from pinskia at gcc dot gnu dot org 2009-09-18 00:38 -------
We get a different ICE on the trunk:
unhandled expression in get_expr_operands():
<call_expr 0x43cbb270
....
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21374
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2009-09-18 0:38 ` pinskia at gcc dot gnu dot org
@ 2009-09-18 0:40 ` pinskia at gcc dot gnu dot org
2009-09-18 8:52 ` rguenth at gcc dot gnu dot org
2010-05-22 18:17 ` [Bug middle-end/21374] [4.3/4.4/4.5/4.6 " rguenth at gcc dot gnu dot org
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From: pinskia at gcc dot gnu dot org @ 2009-09-18 0:40 UTC (permalink / raw)
To: gcc-bugs
------- Comment #13 from pinskia at gcc dot gnu dot org 2009-09-18 00:40 -------
*b.9 = [with_size_expr] WITH_SIZE_EXPR <D.2713 () [return slot optimization],
D.2709>;
When is WITH_SIZE_EXPR supposed to be resolved?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21374
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` (11 preceding siblings ...)
2009-09-18 0:40 ` pinskia at gcc dot gnu dot org
@ 2009-09-18 8:52 ` rguenth at gcc dot gnu dot org
2010-05-22 18:17 ` [Bug middle-end/21374] [4.3/4.4/4.5/4.6 " rguenth at gcc dot gnu dot org
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From: rguenth at gcc dot gnu dot org @ 2009-09-18 8:52 UTC (permalink / raw)
To: gcc-bugs
------- Comment #14 from rguenth at gcc dot gnu dot org 2009-09-18 08:52 -------
The situation of a variable-size return value is not handled. The only
gimple I could envision is a GIMPLE_CALL with the W_S_E on the lhs. Ugh.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21374
^ permalink raw reply [flat|nested] 14+ messages in thread* [Bug middle-end/21374] [4.3/4.4/4.5/4.6 regression] ICE with nested function
[not found] <bug-21374-6528@http.gcc.gnu.org/bugzilla/>
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2009-09-18 8:52 ` rguenth at gcc dot gnu dot org
@ 2010-05-22 18:17 ` rguenth at gcc dot gnu dot org
13 siblings, 0 replies; 14+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2010-05-22 18:17 UTC (permalink / raw)
To: gcc-bugs
------- Comment #15 from rguenth at gcc dot gnu dot org 2010-05-22 18:10 -------
GCC 4.3.5 is being released, adjusting target milestone.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.3.5 |4.3.6
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21374
^ permalink raw reply [flat|nested] 14+ messages in thread