* [Bug c++/54420] Segmentation fault in decl_mangling_context
2012-08-30 14:21 [Bug c++/54420] New: Segmentation in decl_mangling_context lukeocamden at gmail dot com
@ 2012-08-30 14:33 ` markus at trippelsdorf dot de
2012-09-03 10:31 ` [Bug c++/54420] [4.6/4.7/4.8 Regression] " rguenth at gcc dot gnu.org
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From: markus at trippelsdorf dot de @ 2012-08-30 14:33 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54420
Markus Trippelsdorf <markus at trippelsdorf dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |markus at trippelsdorf dot
| |de
--- Comment #1 from Markus Trippelsdorf <markus at trippelsdorf dot de> 2012-08-30 14:33:01 UTC ---
gcc-4.8 is also affected.
Reduced:
class __lambda
{
virtual bool is_sub ();
};
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2012-08-30 14:21 [Bug c++/54420] New: Segmentation in decl_mangling_context lukeocamden at gmail dot com
2012-08-30 14:33 ` [Bug c++/54420] Segmentation fault " markus at trippelsdorf dot de
@ 2012-09-03 10:31 ` rguenth at gcc dot gnu.org
2012-09-04 22:17 ` jason at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2012-09-03 10:31 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54420
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Known to work| |4.1.2
Target Milestone|--- |4.6.4
Summary|Segmentation fault in |[4.6/4.7/4.8 Regression]
|decl_mangling_context |Segmentation fault in
| |decl_mangling_context
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2012-08-30 14:21 [Bug c++/54420] New: Segmentation in decl_mangling_context lukeocamden at gmail dot com
2012-08-30 14:33 ` [Bug c++/54420] Segmentation fault " markus at trippelsdorf dot de
2012-09-03 10:31 ` [Bug c++/54420] [4.6/4.7/4.8 Regression] " rguenth at gcc dot gnu.org
@ 2012-09-04 22:17 ` jason at gcc dot gnu.org
2012-09-05 4:17 ` jason at gcc dot gnu.org
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From: jason at gcc dot gnu.org @ 2012-09-04 22:17 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54420
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org
--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> 2012-09-04 22:16:57 UTC ---
The name __lambda, like all names beginning with "__", is reserved to the
implementation.
In addition, some identifiers are reserved for use by C++ implementations and
standard libraries (17.6.4.3.2) and shall not be used otherwise; no diagnostic
is required.
— Each name that contains a double underscore _ _ or begins with an underscore
followed by an uppercase letter (2.12) is reserved to the implementation for
any use.
I'll fix 4.8 to avoid crashing on this testcase, but I don't want to change the
release branches.
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2012-08-30 14:21 [Bug c++/54420] New: Segmentation in decl_mangling_context lukeocamden at gmail dot com
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2012-09-04 22:17 ` jason at gcc dot gnu.org
@ 2012-09-05 4:17 ` jason at gcc dot gnu.org
2012-09-05 4:21 ` jason at gcc dot gnu.org
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From: jason at gcc dot gnu.org @ 2012-09-05 4:17 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54420
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> 2012-09-05 04:17:09 UTC ---
Author: jason
Date: Wed Sep 5 04:16:58 2012
New Revision: 190961
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=190961
Log:
PR c++/54420
* cp-tree.h (LAMBDANAME_P): Remove.
(LAMBDA_TYPE_P): Check CLASSTYPE_LAMBDA_EXPR instead.
* cp-lang.c (cxx_dwarf_name): Likewise.
* error.c (dump_aggr_type): Likewise.
* semantics.c (begin_lambda_type): Set CLASSTYPE_LAMBDA_EXPR sooner.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-intname.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/cp-lang.c
trunk/gcc/cp/cp-tree.h
trunk/gcc/cp/error.c
trunk/gcc/cp/name-lookup.c
trunk/gcc/cp/semantics.c
trunk/gcc/testsuite/ChangeLog
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2012-08-30 14:21 [Bug c++/54420] New: Segmentation in decl_mangling_context lukeocamden at gmail dot com
` (3 preceding siblings ...)
2012-09-05 4:17 ` jason at gcc dot gnu.org
@ 2012-09-05 4:21 ` jason at gcc dot gnu.org
2012-09-05 16:18 ` paolo.carlini at oracle dot com
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From: jason at gcc dot gnu.org @ 2012-09-05 4:21 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54420
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |FIXED
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> 2012-09-05 04:20:53 UTC ---
Fixed.
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2012-08-30 14:21 [Bug c++/54420] New: Segmentation in decl_mangling_context lukeocamden at gmail dot com
` (4 preceding siblings ...)
2012-09-05 4:21 ` jason at gcc dot gnu.org
@ 2012-09-05 16:18 ` paolo.carlini at oracle dot com
2012-09-18 13:48 ` paolo.carlini at oracle dot com
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From: paolo.carlini at oracle dot com @ 2012-09-05 16:18 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54420
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.6.4 |4.8.0
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug c++/54420] [4.6/4.7/4.8 Regression] Segmentation fault in decl_mangling_context
2012-08-30 14:21 [Bug c++/54420] New: Segmentation in decl_mangling_context lukeocamden at gmail dot com
` (5 preceding siblings ...)
2012-09-05 16:18 ` paolo.carlini at oracle dot com
@ 2012-09-18 13:48 ` paolo.carlini at oracle dot com
2012-09-19 10:27 ` patrik.h.hagglund at gmail dot com
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From: paolo.carlini at oracle dot com @ 2012-09-18 13:48 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54420
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |patrik.h.hagglund at gmail
| |dot com
--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-09-18 13:47:54 UTC ---
*** Bug 54616 has been marked as a duplicate of this bug. ***
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2012-08-30 14:21 [Bug c++/54420] New: Segmentation in decl_mangling_context lukeocamden at gmail dot com
` (6 preceding siblings ...)
2012-09-18 13:48 ` paolo.carlini at oracle dot com
@ 2012-09-19 10:27 ` patrik.h.hagglund at gmail dot com
2012-09-19 10:36 ` jakub at gcc dot gnu.org
2012-09-19 11:05 ` patrik.h.hagglund at gmail dot com
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From: patrik.h.hagglund at gmail dot com @ 2012-09-19 10:27 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54420
--- Comment #6 from Patrik Hägglund <patrik.h.hagglund at gmail dot com> 2012-09-19 10:27:37 UTC ---
Jason Merrill wrote:
> In addition, some identifiers are reserved for use by C++ implementations and
> standard libraries (17.6.4.3.2) and shall not be used otherwise; no diagnostic
> is required.
> [...] I don't want to change the release branches.
You seems to imply that "no diagnostic is required" implies "the behavior of
the compiler is undefined". This seems odd.
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug c++/54420] [4.6/4.7/4.8 Regression] Segmentation fault in decl_mangling_context
2012-08-30 14:21 [Bug c++/54420] New: Segmentation in decl_mangling_context lukeocamden at gmail dot com
` (7 preceding siblings ...)
2012-09-19 10:27 ` patrik.h.hagglund at gmail dot com
@ 2012-09-19 10:36 ` jakub at gcc dot gnu.org
2012-09-19 11:05 ` patrik.h.hagglund at gmail dot com
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From: jakub at gcc dot gnu.org @ 2012-09-19 10:36 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54420
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|ice-on-valid-code |ice-on-invalid-code
CC| |jakub at gcc dot gnu.org
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-09-19 10:35:58 UTC ---
The important thing is "and shall not be used otherwise", which means the
testcase is invalid, and there is a compiler crash on invalid code that is
fixed on the compiler trunk, but the fix is too risky for the lower priority of
the bug (compared to if it was e.g. a crash on valid code or miscompilation).
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug c++/54420] [4.6/4.7/4.8 Regression] Segmentation fault in decl_mangling_context
2012-08-30 14:21 [Bug c++/54420] New: Segmentation in decl_mangling_context lukeocamden at gmail dot com
` (8 preceding siblings ...)
2012-09-19 10:36 ` jakub at gcc dot gnu.org
@ 2012-09-19 11:05 ` patrik.h.hagglund at gmail dot com
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From: patrik.h.hagglund at gmail dot com @ 2012-09-19 11:05 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54420
--- Comment #8 from Patrik Hägglund <patrik.h.hagglund at gmail dot com> 2012-09-19 11:04:43 UTC ---
(In reply to comment #7)
> the fix is too risky for the lower priority of the bug
This is a good explanation! :-)
^ permalink raw reply [flat|nested] 11+ messages in thread